Tubular alteration textures, mineralized by titanite, in glassy rims of pillow lavas from a Norwegian ophiolite (Solund-Stavfjord ophiolite complex (SSOC)) are described and characterized by a multimethod approach. Tubular alteration textures, mineralized by titanite, have been previously proposed to result from bioalteration. The microstructure of the ...

Titanite growth at the expense of rutile during retrograde hydration of eclogite into amphibolite is a common phenomenon. We investigated an amphibolite sample from the Troms� eclogite facies terrain in Northern Norway to gain insight into the trace element distribution between rutile and titanite during incomplete resorption of the rutile by ...

concentrations obtained by laser-ablation inductively coupled mass-spectrometry (LA-ICP-MS) in olivine concentrations were measured in situ by laser ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS measured by the sample- standard bracketing method using a Nu Plasma multi- collector ...

) 91467 and ALH 85085 by laser ablation ICP-MS (LA-ICP-MS). Arguments for or against the origins-subtracted and then corrected for the instrumental sensitivity factors. Laser ablation ICP-MS requires an internal calibrant) silicate veins in them. 3.2. LA-ICP-MS Analyses of ...

(centimeter size) rutile grains. Methods employed are SIMS, EMP, LA-ICP-MS, ID-MC-ICP-MS and TIMS. For most ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), secondary ion mass spectrometry (SIMS�rho�z and PAP, Pouchou and Pichoir, 1984; Heinrich and Newbury, 1991), both ...

Page 1. Small-volume U�Pb zircon geochronology by laser ablation- multicollector-ICP-MS ... Keywords: U�Pb geochronology Zircon LA-ICP-MS ...

ICP-MS and laser ablation ICP-MS (LA-ICP-MS) are well established techniques for the analysis of metals in geological and environmental samples. LA-ICP-MS is commonly used in geological applications to determine the spatial distribution of metal concentrations at small sampling intervals (as ...

-element fractionation in laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) analysis is one is close to 1. Since laser ablation inductively coupled plasma mass spectro- metry (LA-ICP-MS) was �rst) are commonly used as an internal standard for in situ multi-element ...

(such as ion probe or laser ablation ICP-MS) are hampered by a lack of well characterized, homogeneous micro-analyses d'�l�ments en trace (par sonde ionique ou ICP-MS avec ablation laser) sont g�n�es par l during laser ablation inductively coupled plasma-mass spectrometry ...

Microbial activity in volcanic glass within the oceanic crust can produce micron sized pits and tunnels. Such biogenic textures have been described from the recent oceanic crust and mineralized equivalents in pillow lavas as old as 3.47-3.45 Ga from the Barberton Greenstone Belt (BGB) of South Africa. In meta-volcanic glasses these microbial traces are preserved by titanite ...

-Pb Laser Ablation ICP-MS Zircon Dating using Matrix-Matched Calibration Samples with a Frequency Quadrupled of laser ablation (LA) ICP-MS to the in situ analysis of 207Pb/206Pb and 206Pb/238U isotopic ratios analyses, LA-ICP-MS results on reference materials (UQ-Z1 and G91500) indicated ...

by laser ablation (LA) inductively coupled plasma mass spectrometry (ICP-MS). A compact computer-MS and the LA via serial RS-232 port. Each LA-ICP-MS analysis at a defined point includes a 60 s pre solution auto-sampler ICP-MS analysis. Each analytical cycle consists of four standards, one control

of laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) to investigate the chemical or exposure to sunlight. 5.2.1 LA-ICP-MS The concentrations of many trace elements in the zircon samples were determined by single-grain analyses using laser ablation inductively coupled plasma mass spectrometry ...

technique: (a) XRF, (b) INAA, (c ) ICP-MS. References for 15529 ... L.A. (2008) A laser-ablation ICP-MS study of Apollo 15 low-titanium olivine-normative ...

: Details zu den Eigenschaften von Mineralen � Kasten 2: Optimierung der LA-ICP-MS-Methode � Kasten 3: Edle ICP MS) gelang es, die Elementzusammensetzung von Edelsteinen aus f�nf Sch�rfminen eindeutig und" ("zerst�rende") Analysenmethoden ausgewichen und schliesslich auf die LA-ICP-MS (Laser ...

involved the ZAF algorithm. Trace element contents were measured with the laser ablation ICP MS system-ICP-MS quality controls in eclogitic assemblages see Zack et al., 2002. Note that REEs lighter than Eu were discussions about the topic of this work. Matthias Barth is thanked for help at the ...

... with laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) , allowing a combination of high sensitivity and good spatial resolution. ...

LA-ICP-MS, The Laser-Ablation Inductively Coupled Mass Spectrometer Lab was part of the Maryland Geology tour. Drs. Jason Dworkin and Joeseph Nuth, July 8, ...

Jun 20, 2008... several basaltic lunar samples using a combination of solution and laser ablation inductively coupled plasma mass spectrometry (ICP-MS). ...

laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), focused ion beam extractions (FIB), secondary ion mass spectrometry or ion ...

Low-level doped solid metal/liquid metal experiments analyzed by laser ablation ICP-MS allow Henry's

Mar 1, 2011... and 2) analysis of run products with laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), allowing a combination of ...

Particle size effects and elemental fractionation in laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) are investigated with nanosecond and femtosecond laser ablation, differential mobility analysis, and magnetic sector ICP-MS. Laser...

. [1] We used laser ablation inductively coupled plasma mass spectrometry (LA ICP-MS) to analyze Sr laser ablation inductively coupled plasma mass spectrometry (LA ICP-MS) to analyze Sr/Ca ratios along of 6 #12;0.3-mm alumina suspension. Tissue was not removed. We assayed Sr/Ca ratios using LA ...

The Palaeoproterozoic Eastern Creek Volcanics are a series of copper-rich tholeiitic basalts which occur adjacent to the giant sediment-hosted Mount Isa copper deposit in Queensland, Australia. The volcanic rocks are often cited as the source of metals for the deposit. New laser ablation ICP-MS analyses of iron-titanium oxides from the basalts provide ...

The focus of this dissertation is the use of a twin quadrupole inductively coupled plasma mass spectrometer (ICP-MS) for the simultaneous detection of two m/z values. The twin quadrupole ICP-MS is used with laser ablation sample introduction in both the s...

We investigate particles produced by laser irradiation and their analysis by Laser Ablation Inductively Coupled Plasma Mass Spectroscopy (LA/ICP-MS), with a view towards optimizing particle production for analysis of high level waste materials and waste glass. LA/ICP-MS has consi...

Gem spinel deposits in Myanmar, Vietnam and Tajikistan have their formation in association with Himalayan orogenesis. Gem-quality orange, pink, red and purple spinels from deposits at Mogok (Myanmar), Luc Yen (Vietnam), and Kuh-i-Lal (Tajikistan) have been investigated by 'standard' gemological testing and laser ablation inductively coupled plasma mass spectrometry ...

rate, Rokko area, LA- ICP-MSlaser ablation inductively coupled plasma mass spectrometry LA-ICP-MS with a Microlas Excimer laser abla- tion system; Ishida et al., 2004; Morishita et al., 2005 LA-ICP- MS 2 , 2007; Hasebe et al., 2009 FT LA-ICP-MS 43 Ca 29 Si 238 U NIST 610Pearce et al., 1997 ...

- erful High Resolution ICP-MS, the spatial resolution could be improved down to 5 to 10 �m crater size- files performed by laser ablation ICP-MS from five arago- nitic shells of Pleiodon (Cameronia) spekii-mass spectrometer (LA-ICP-MS, PQ2+, laser 266 nm; operating conditions in Lazareth et al., 2003). Data were

-coupled-plasma mass spectrometer (ICP-MS) for analysis of trace elements in biogenic carbonates, such as corals-ablation sector-field inductively-coupled- plasma mass spectrometry (SF-ICP-MS) Cynthia M. Jones1 and Zhongxing Norfolk, Virginia 23529, USA Key words: ICP-MS, otolith, trace-elements, preservation The ...

were analyzed by inductively coupled plasma-mass spectrometry (ICP-MS; VG Plasma Quad2+), which ICP-MS Titrn ICP-MS IC AES ICP-MS AAS ICP-MS ICP-MS ICP-MS ICP-MS ICP-MS ICP-MS ...

Laser ablation particle plume compositions are characterized using inductively coupled plasma mass spectrometry (ICP/MS). This study evaluates the mass response characteristics peculiar to ICP/MS detection as a function of laser fluence and frequency. Eva...

... Accession Number : ADA515753. Title : Small-Volume U-Pb Zircon Geochronology by Laser Ablation-Multicollector-ICP-MS. ...

Laser ablation inductively coupled plasma-mass spectrometry (LA-ICP-MS) has been used to examine the spatial distribution of metals in particulate matter on ambient air filters. The implications of the inhomogeneous distribution observed for the sub-sampling of such filters for multiple analyses have been discussed. It has been shown that large biases in ...

... spectrometry (LA-ICP-MS) was used to determine rare earth element (REE) content of 76 fossil bones collected ... have documented the uptake of the lanthanide series rare earth elements (REE) in vertebrate...

Laser ablation (LA-)ICP-MS geochronology, principally of zircon, has become a routine procedure utilised by c.70 laboratories worldwide, providing access to key geochronological information for a wide community of geoscientists. Using this technique uncertainties of 1-1.5% 2SD on the final U-Pb ratio are now relatively routine. Sedimentary provenance ...

... Thole, J.T., and Williams, J., 2010, Using laser ablation-inductively couple plasma-mass spectrometry (LA-ICP-MS) to explore geochemical ... ...

Integration of laser ablation ICP-MS analysis of eight howardite samples with XRF data, EMPA data points, noble gas abundance results, and petrographic descriptions provides some preliminary interpretations of regolithic classification.

age. This study presents geochemical data on sulfide-rich samples, in situ laser-ablation inductively coupled plasma mass spectrometry (LA�ICP�MS) of sulfide minerals, and...

Laser ablation inductively coupled plasma mass spectrometry (LA ICP-MS) is a newly established technique that is capable of in-situ U(Th)-Pb dating of accessory minerals in a wide range of rock types and geological environments. LA ICP-MS emerged in 1985 and rapidly became an important analytical tool for trace element determinations ...

In situ UV-laser ablation 40Ar/39Ar geochronological and geochemical data, together with rock and mineral compositional data, have been determined from pseudotachylyte and surrounding mylonitic gneiss associated with the UHP whiteschists of the Dora Maira Massif, Italy. Several generations of fresh pseudotachylyte occur as irregular veins up to a few cm thick both parallel and ...

Single pulse laser ablation sampling with inductively coupled plasma mass spectrometry (ICP-MS) was assessed for accurate chemical analysis. Elemental fractionation (e.g. Pb/U), the quantity of ablated mass (crater volume), ICP-MS intensity and the particle contribution (spike signal) during single pulse ...

Laser ablation (LA) with inductively coupled plasma mass spectrometry (ICP-MS) has been demonstrated as a viable technology for sample characterization within the EM complex. Laser ablation systems have been set up at the Hanford Site, Savannah River Plan...

Calibration of analytical methods using laser ablation for sample introduction is often problematic. The availability of matrix-adapted standard materials is a crucial factor in the analysis of biological samples in particular. In this work a method for preparation of thin-film references for LA-ICP-MS is presented which is inexpensive, relatively simple and generally ...

The outer keratin layer (scute) of desert tortoise shells consists of incrementally grown laminae in which various bioaccumulated trace elements are sequestered during scute deposition. Laser ablation ICP-MS examination of laminae in scutes of dead tortoises revealed patterns of trace elemental distribution from which the chronology of elemental uptake can ...

Using laser ablation ICP-MS techniques, U-Pb ages are reported for 338 detrital zircons separated from four Franciscan metagraywacke samples from imbricate thrust sheets cropping out in the Pacheco Pass area, east central California Coast Ranges. Structurally higher slabs are clastic quartz � albite-bearing rocks typified by neoblastic lawsonite + ...

The Adamello batholith is the major tertiary calc-alkaline intrusion of the Alps. In the southernmost sectors of the intrusions (Val Fredda Unit), amphibole-rich gabbroic rocks (hornblendites and amphibole gabbros) of cumulus origin are particularly abundant. In the amphibole gabbros, two different parageneses can be distinguished. The first consists of large euhedral brown amphibole (up to 50 ...

This paper describes the use of double-pulse laser ablation to improve ICP-MS internal precision (temporal relative standard deviation, %TRSD). Double pulse laser ablation offers reduced fractionation, increased sensitivity, and improved signal to noise ratios. The first pulse is used to ablate a large quantity of ...

This report describes an innovative technology, laser ablation-inductively couple plasma-mass spectrometry (LA-ICP-MS), operated in a mobile laboratory, to rapidly detect thorium 230 activity levels in soil samples. This technology was demonstrated on-sit...

The objective of these experiments is to evaluate the performance of two types of ICP-MS device for measurement of actinide isotopes by laser ablation (LA) ICP-MS. The key advantage of ICP-MS compared to monitoring of radioactive decay is that the element...

Particle size effects and elemental fractionation in laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) are investigated with nanosecond and femtosecond laser ablation, differential mobility analysis, and magnetic sector ICP-MS. Laser pulse width was found to have a significant influence on the ...

Pb isotope compositions of biologically significant PM(10) atmospheric particulates from a busy roadside location in London UK were measured using solution- and laser ablation-mode MC-ICP-MS. The solution-mode data for PM(10) sampled between 1998-2001 document a dramatic shift to increasingly radiogenic compositions as leaded petrol was phased out. ...

For a few years now inductively coupled plasma mass spectrometry has been increasingly used for precise and accurate determination of isotope ratios of long-lived radionuclides at the trace and ultratrace level due to its excellent sensitivity, good precision and accuracy. At present, ICP-MS and also laser ablation ICP-MS are applied ...

Investigate particles produced by laser irradiation and their analysis by Laser Ablation Inductively Coupled Plasma Mass Spectroscopy (LA/ICP-MS), with a view towards optimizing particle production for analysis of high level waste materials and waste glass. LA/ICP-MS has considerable potential to increase the safety and speed of ...

A comparison between the compositions determined by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) from two different laboratories on 52 ancient beads recovered in Africa was undertaken. Single point and raster samplings by the laser ablation systems were used. Although similar results were obtained using the ...

Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) with multi-element capability is well established for the trace and ultratrace analysis of metals, metalloids and selected non-metals (such as C, P, S) in biological and clinical samples. Nowadays LA-ICP-MS is employed as a sensitive elemental mass spectrometric ...

Laser ablation (LA) with inductively coupled plasma mass spectrometry (ICP-MS) has been demonstrated as a viable technology for sample characterization within the EM complex. Laser ablation systems have been set up at the Hanford Site, Savannah River Plant, the Pu immobilization program (MD), Los Alamos, and at numerous other DOE ...

We optimized multiplexed immunohistochemistry (IHC) on breast cancer tissue. Up to 20 tumor markers are routinely evaluated for one patient and thus, a common analysis results in a series of time consuming staining procedures. As an alternative, we used lanthanides for labeling of primary antibodies, which are applied in IHC. Laser ablation (LA) ICP ...

Proxy records can be derived from soft corals and black corals using minor and trace element measurements of the organic skeleton of these corals. Here, concentrations of Br, I, Pb, Mn, Cd, Zn, and B in the organic skeleton were determined using solution inductively coupled plasma�mass spectrometry (ICP-MS) in one black coral from 5 m depth and two soft corals from 85 and ...

Strontium isotope ratios (87Sr/86Sr) in tooth enamel provide a means to investigate migration and landscape use in humans and other animals. Established methods for measuring (87)Sr/(86)Sr in teeth use bulk sampling (5-20 mg) and labor-intensive elemental purification procedures before analysis by either thermal ionization mass spectrometry (TIMS) or multicollector inductively coupled plasma mass ...

Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) was used for the quantitative imaging of nutrient elements (such as K, Mg, Mn, Cu, P, S and B) in the leaves of Elsholtzia splendens. The plant leaves were scanned directly with a focused Nd:YAG laser in the laser ablation chamber. The ablated ...

Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) was used for the quantitative imaging of Cu and other essential elements (such as K, Mg, Mn, P, S and B) in the leaves of a Cu-tolerant plant Elsholtzia splendens treated with the enriched (65)Cu isotope tracer (isotope abundance of 89.2%). The leaves (newly formed, fully grown and ...

The authors goal is to provide fundamental mechanistic studies of laser produced particulate formation in support of the use of Laser Assisted- Inductively Coupled Plasma-Mass Spectroscopy (LA-ICP-MS) to be used for analysis of radioactive/toxic materials...

To provide fundamental mechanistic studies of laser-produced particulate formation in support of the analysis of radioactive and/or toxic materials by Laser Assisted-Inductively Coupled Plasma Mass Spectroscopy (LA/ICP-MS).

To provide fundamental mechanistic studies of laser-produced particulate formation in support of the analysis of radioactive and/or toxic materials by Laser Assisted-Inductively Coupled Plasma Mass Spectroscopy (LA-ICP-MS).

Do paleosols constrain the CO2 level of the Archean atmosphere? ..... A combined laser ablation-resonance ionization mass spectrometer for ...... Pseudocraters on Mars: A consequence of lava-ground ice interaction. ...... High precision iron isotope measurements of meteoritical material by cold plasma ICP-MS. ...

High precision laser ablation MC-ICP-MS of Mg isotopes shows uniform initial Mg and Al-Mg systematics in a Leoville Type B CAI. Part of the inclusion underwent complete resetting after complete decay of 26Al.

The objective of this work is to demonstrate the analysis of ensembles of small samples on filter media by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). Spatially resolved analysis of particulate samples collected on gelatin-bas...

Isotopic analyses of radioactive materials such as irradiated nuclear fuel are of major importance for the optimization of the nuclear fuel cycle and for safeguard aspects. Among the mass-spectrometric techniques available, inductively coupled plasma mass spectrometry (ICP-MS) and thermal ionization mass spectrometry are the most frequently applied methods for nuclear ...

Inductively coupled plasma mass spectrometry (ICP-MS) and laser ablation ICP-MS (LA-ICP-MS) have proved themselves to be powerful and sensitive inorganic mass spectrometric techniques for analysing stable and radioactive isotopes in different application fields because of their high sensitivity, low detection ...

The precise and accurate determination of isotope ratios by inductively coupled plasma mass spectrometry (ICP-MS) and laser ablation ICP-MS (LA-ICP-MS) is important for quite different application fields (e.g. for isotope ratio measurements of stable isotopes in nature, especially for the investigation of isotope ...

Cadmium in coral skeleton ([Cd]coral) tracks oceanic upwelling. This study assessed the Cd signal in three species of coral ( Porites lobata, Pavona gigantea, Pavona clavus) from a seasonally upwelling region (Gulf of Panam�, Pacific Ocean) using high-resolution laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). Single LA tracks in ...

Inorganic mass spectrometry techniques may offer great potential for the characterisation at the nanoscale, because they provide unique elemental information of great value for a better understanding of processes occurring at nanometre-length dimensions. Two main groups of techniques are reviewed: those allowing direct solid analysis with spatial resolution capabilities, i.e. lateral (imaging) ...

This thesis examines the production and distribution of ancestral Polynesian pottery on Tutuila Island, American Samoa and evaluates the extent of intra-island interactions. Currently, very little is known about ceramic production and exchange in Samoa. Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) is used to source clay and ...

.....................................................................66 5.2.1 LA-ICP-MS..................................................................................................68 5.2.2 ICP-MS

This paper reports the first trace element partition coefficients measured on experimentally produced products (clinopyroxene, garnet, rutile, and glass) by laser ablation microprobe-inductively coupled plasma-mass spectrometry (LAM-ICP-MS). A 266 nm (UV) laser microprobe was used to improve ablation characteristics and to achieve a ...

A new analysis procedure for determination of trace impurities in a few milligram noble metal nanoclusters, using on-line isotope dilution in laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) was developed. During the laser ablation of investigated sample simultaneous the dry aerosol of nebulized enriched isotope ...

The characteristics of Infra Red femtosecond laser-induced aerosols are studied for monazite (Moacyr) ablation, in order to evaluate optimal conditions for Inductively Coupled Plasma - Mass Spectrometry (ICP-MS) analysis. Various parameters are tested within wide ranges in order to cover near all of the usual LA-ICP-MS settings: pulse ...

The methods available for determination of environmental contamination by plutonium at ultra-trace levels require labor-consuming sample preparation including matrix removal and plutonium extraction in both nuclear spectroscopy and mass spectrometry. In this work, laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) was applied for ...

LA-ICP-MS analysis combines laser ablation with inductively coupled plasma mass spectrometry for the rapid chemical analyses of solid samples at spatial resolution better than 100 ?m. Standardization in LA-ICP- MS involves both internal and external calibration, and is limited by the small number of reliable ...

There have been numerous developments in the field of microanalysis that have all improved our ability to interpret chemical information recorded within earth materials. The field of Laser Ablation ICP-MS (LA-ICP-MS) continues to advance while at the same time has become �routine� in many labs. As with complimentary techniques that ...

Visualization of elemental distributions in thin sections of biological tissue is gaining importance in many disciplines of biological and medical research. Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) and scanning micro-X-ray fluorescence spectrometry (micro-XRF) are two widely used microanalytical techniques for elemental ...

For the first time, laser ablation - Inductively Coupled Plasma - Mass Spectrometry (LA-ICP-MS) was used to carry out isotopic measurement on single sub-micrometer-size uranium particles. The analytical procedure was applied on two particle-containing samples already analyzed in the same laboratory by established techniques for particle analysis: ...

The objective of these experiments is to evaluate the performance of two types of ICP-MS device for measurement of actinide isotopes by laser ablation (LA) ICP-MS. The key advantage of ICP-MS compared to monitoring of radioactive decay is that the element need not decay during the measurement time. Hence ICP-MS is much faster for ...

'The authors goal is to provide fundamental mechanistic studies of laser produced particulate formation in support of the use of Laser Assisted-Inductively Coupled Plasma-Mass Spectroscopy (LA-ICP-MS) to be used for analysis of radioactive/toxic materials. The work reported here represents the first nine months of this 3-year project. The major focus of these studies ...

Although sulfur is poorly ionized in an argon plasma, there are many applications for sulfur isotope analysis using an ICP source. Studies using a desolvation system (DSN) and an aqueous source of sulfur, where the sulfur is complexed with a cation to form a sulfur salt, e.g., calcium or sodium to provide a stable delivery of sulfur through the sample introduction system indicate that precision (~ ...

Zircon is a common accessory phase in clastic sedimentary rocks as well as one of the most stable minerals in sedimentary environments. Investigating the age spectra of detrital zircons is important for sedimentary provenance analysis to glean information regarding ancient source areas and major magmatic events, crucial for plate-tectonic and palaeogeographic reconstructions. Furthermore, in the ...

The determination of the localization and distribution of essential and beneficial metals (e.g., Cu, Fe, Zn, Mn, Co, Ti, Al, Ca, K, Na, Cr and others), toxic metals (like Cd, Pb, Hg, U), metalloids (e.g., As, Se, Sb), and non-metals (such as C, S, P, Cl, I) in biological tissues is a challenging task for life science studies. Over the past few years, the development and application of mass ...

Changes in phase and chemical composition of the mineral titanite (monoclinic CaTiSiO(5)) during laser ablation and plasma-aerosol interaction were investigated using electron diffraction and electron microbeam X-ray analysis with transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Laser ablation of ...

Characterization of semiconductor thin films has long been determined by a number of traditional surface analysis techniques; Auger, ESCA/XPS, SEM-EDS and SIMS to name only a few. Depth profiles, contamination in the thin film or quantitative stoichiometry are specific application examples that predicate the technique best suited for the analysis need. The evolution of photovoltaic (PV) thin film ...

Platinum complexes are used for the treatment of several types of cancer. High platinum concentrations in the target tissue and low concentrations in dose-limiting tissue structures such as renal tubules are desirable to assure selective toxicity. Microlocal analysis of platinum distribution in tissue sections may thus contribute to the optimization of platinum therapy. Scanning laser ...

Cadmium, copper, lead, palladium, platinum, rhodium, and zinc profiles were investigated along feather shafts of raptor and other bird species by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The distribution of external versus internal metal contamination of feathers was investigated. The species examined were peregrine falcon ...

(ICP)-MS and solution ICP-MS tech- niques to analyze the trace element composition of matrix in 22 analysis by ICP-MS after acid digestion [performed on a VG (Manchester, U.K.) PQ2 ICP-MS spectrometer]. LA-ICP-MS a 213-nm UV beam) coupled to a HP7500a ICP-MS spectrometer (Agilent Technologies, ...

-94882789-98722789-8708 5:00 E-mail3111 #12;1274 2 (TiO2) CMS (ICP-MS) CMS ICP-MS CMS 2 ICP- MS 5 ICP-MS CMS 5 CMS ICP-MS 2007

We studied primary ore samples from Kalmakyr, a giant Cu-Au-Mo porphyry deposit in eastern Uzbekistan. Disseminated and stockwork-type high-grade Cu-Au-Mo mineralization showed average concentrations of 55 ppb Pd, 5.5 ppb Pt, 0.95 ppb Rh, 0.49 ppb Ir, and 4.1 ppm Au ( n = 8). This type of mineralization is characterized by the presence of pyrite, chalcopyrite, molybdenite, and gold. A peak Pd ...

The spatial distribution and concentration of impurities in metallurgical-grade silicon (MG-Si) samples (97-99% w/w Si) were investigated by use of laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The spatial resolution (120 mum) and low limits of detection (mg kg(-1)) for quality assurance of such materials were studied in detail. ...

Mercury (Hg) contamination is a global issue with implications for both ecosystem and human health. In this study, we use a new approach to link Hg exposure to health effects in spotted gar (Lepisosteus oculatus) from Caddo Lake (TX/LA, USA). Previous field studies have reported elevated incidences of macrophage centers in liver, kidney, and spleen of fish with high concentrations of Hg. ...

Of all the inorganic mass spectrometric techniques, laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) plays a key role as a powerful and sensitive microanalytical technique enabling multi- element trace analysis and isotope ratio measurements at trace and ultratrace level. LA-ICP-MS was used to produce images of ...

Brick stones collected from different production facilities were studied for their elemental compositions under forensic aspects using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS), instrumental neutron activation analysis (INAA) and X-ray fluorescence analysis (XRF). The aim of these examinations was to assess the potential of ...

In the Central Zone of the Limpopo Belt (South Africa), Palaeoproterozoic granulite-facies metamorphism was superimposed on an earlier Archaean orogenic history. Previously determined ages of � 2030 2020 Ma obtained from high-temperature chronometers (zircon, garnet, monazite) are generally thought to provide the best estimate of the peak of Palaeoproterozoic granulite-facies metamorphism in the ...

Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) is used for the direct analysis of Egyptian granite samples, which are collected from the eastern desert--Egypt for the determination of Pb isotopic ratios. The age of the samples is calculated using Lead-Lead Method. Standard Reference Material (SRM 981) is used for the mass bias ...

The discrimination potential of Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) is compared with previously reported solution ICP-MS methods using external calibration (EC) with internal standardization and a newly reported solution isotope dilution (ID) method for the analysis of two different glass ...

Tree-ring cores were collected from a long-lived Douglas-fir (Pseudotsuga menziesii) at Double Springs Pass in the Lost River Range of central Idaho. The tree-rings were dated to 16XX - a minimum age as the pith was not reached during coring because of internal decay. Three sections of the core - with date ranges of 1642-67, 1823-61, and 1971-2005 - were removed for laser ...

Trace elemental compositions of foraminiferal calcite have been widely used as proxies for past ocean conditions. However, it has been shown that the presence of detrital material, particulate organic matter together with diagenically-precipitated overgrowth on test surfaces, significantly limit the accuracy of trace elemental analyses. A number of different cleaning methods had been proposed to ...

Laser ablation sampling (LAS) in conjunction with inductively coupled plasma-mass spectrometry (ICP-MS) was used for the quantitative multielemental analysis of red maple (Acer rubrum L.) tree rings. Slight differences in ablation were corrected using {sup 13}C as an internal standard. Calibration standards, consisting of individual ...

Laser ablation particle plume compositions are characterized using inductively coupled plasma mass spectrometry (ICP/MS). This study evaluates the mass response characteristics peculiar to ICP/MS detection as a function of laser fluence and frequency. Evaluation of the ICP/MS mass response allows deductions to be made concerning how representative the ...

Laser ablation particle plume compositions are characterized using inductively coupled plasma mass spectrometry (ICP/MS). This study evaluates the mass response characteristics peculiar to ICP/MS detection as a function of laser fluence and frequency. Evaluation of the ICP/MS mass response allows deductions to be made concerning how representative the ...

The capabilities of laser ablation double focusing sector field inductively coupled plasma mass spectrometry for the determination of 55 elements in nails and hair were studied. Quantification was performed by external calibration using in-house matrix-matched standards in tablet form following correction for variations in ablation efficiency by internal ...

Femtosecond laser ablation was investigated for direct solid sample chemical analysis. The phonon relaxation time in a solid is of the order of 100 fs, which is the same as the laser pulse duration. For such excitation, there should be little time for the matrix to experience a ''temperature'' during the laser pulse. If the surface explodes ...

71, technique (a) LA-ICP-MS, (b) ICP-MS, (c ) EMPA (d) XRF, (e) INAA .... 73, technique (a) FB-EMPA, (b) ICP-MS, (c ) INAA (d) wet chemistry ...

An analytical procedure has been proposed for the determination of precise uranium isotope ratios in a thin uranium layer on a biological surface by laser ablation inductively coupled plasma sector field mass spectrometry (LA-ICP-MS). A cooled laser ablation chamber using a Peltier element was developed in order to analyze element ...

The ratio of the two refractory trace elements zirconium (Zr) and hafnium (Hf) in meteorites has been proposed to be uniform. The most precise value available is 34.3+/-0.2 (1?). It was obtained by isotope dilution ICP-MS applied to 15 chondrites, most of which were carbonaceous chondrites, and six achondrites. We reinvestigated the case and determined Zr/Hf ratios of a broad ...

The focus of this dissertation is the use of a twin quadrupole inductively coupled plasma mass spectrometer (ICP-MS) for the simultaneous detection of two m/z values. The twin quadrupole ICP-MS is used with laser ablation sample introduction in both the steady state (10 Hz) and single pulse modes. Steady state signals are highly ...

- trometry (ICP-MS), and neutron activation (INAA). These data are discussed in detail in other chapters, Cd, In, Mo, Tl, Ga, Rb, Cs, Nb, Ta, Zr, Hf, U, Th) analysis was performed by mass spectrometry (ICP-MS; ICP-MS ICP-MS ICP-MS ICP-MS

Reproducible and sensitive elemental analysis of solid samples is a crucial task in areas of geology (e.g. microanalysis of fluid inclusions), material sciences, industrial quality control as well as in environmental, forensic and biological studies. To date the most versatile detection method is mass-spectroscopic multi-element analysis. In order to obtain reproducible results, this requires ...

Reproducible and sensitive elemental analysis of solid samples is a crucial task in areas of geology (e.g. microanalysis of fluid inclusions), material sciences, industrial quality control as well as in environmental, forensic and biological studies. To date the most versatile detection method is mass-spectroscopic multi-element analysis. In order to obtain reproducible results, this requires ...

technique (a) ICP-MS, (b) fused bead elec. Probe, (c ) ICP-MS with isotope dilution. Lunar Sample Compendium. C Meyer 2004 ...