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- ...

(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 ...

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 ...

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 ...

: 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 ...

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 ...

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 ...

) 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 ...

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

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 ...

-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 ...

-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 ...

-mass spectrometry (LA-ICP-MS) Carol-Ann Craig,{ Kym E. Jarvis* and Leon J. Clarke{ NERC ICP-MS Facility, CEESR (LA-ICP-MS) are herein evaluated. Calibration lines were constructed using: (a) commercially available-mass spectrometry (LA-ICP-MS) is now a well-established elemental analytical ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

... 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...

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) ...

. [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 ...

emission spectrometry (ICP-OES) and mass spectrometry (ICP-MS). Validation of method precision and accuracy emission spectrometry (ICP-OES) and mass spectrometry (ICP-MS). l Precision for elements Ag, As, Ba, Be, Ca

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 ...

coupled plasma mass spectrometry (ID-ICP-MS) coupled with cold vapor generation (CV-ID-ICP-MS) used for Hg-MS #12;10 with or without collision cell technology (CCT-ICP-MS) were used where detection limits of the non of SRMs 2709a, 2710a, and 2711a. Method SRM 2709a SRM 2710a SRM 2711a ...

form 6 December 2006; accepted 14 December 2006 KEYWORDS Groundwater quality; Statistical analysis; ICP-MS and trace element concentrations using ICP-MS and ICP-OES. Five methods of data analysis were applied. Similarly, Kraemer et al. (1996) used ICP-MS and Ion Chroma- tography to characterize trace elements

Sciex Elan 6000 ICP- MS following the procedure of Ottley et al (2003). Typical %RSD on parent daughter the ThermoFisher Neptune Multi-collector Plasma Mass Spectrometer (MC-ICP-MS) at the Arthur Holmes Isotope for the dissolution of geological samples for the analysis of REE and trace elements via ICP-MS. In: ...

ULTRA-TRACE LEVEL METHODS USING ICP-MS AND ICP-AES ........................... 13 Aqua Regia Digestion Absorption Spectroscopy ............................................................................. 17 ICP-MS ICP-MS and ICP-AES Suitable for exploration samples such as soils, sediments and weakly mineralized

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...

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 (~ ...

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 ...

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 ...

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 ...

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 ...

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 ...

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. ...

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 ...

... 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...

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 ...

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 ...

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 ...

A comparison of 20 MORB glasses from 14�-16� N along the Mid-Atlantic Ridge using both solution-based and in situ laser ablation-based ICP-MS trace element analyses on the same samples was conducted. Li, Be, Sc, Ti, V, Cr, Co, Ni, Cu, Zn, Ga, Rb, Sr, Y, Zr, Nb, Ba, La, Ce, Pr, Nd, Sm, Eu, Tb, Gd, Dy, Ho, Er, Tm, Yb,Lu, Hf, Ta, Pb, Th, and U were ...

... A high precision (+/-0.5%) isotope dilution ICP-MS method for measuring Mo was developed to re-evaluate the marine distribution of Mo in the ...

... Abstract : We used a simple method based on inductively coupled plasma mass spectrometry (ICP-MS) to determine the isotopic composition of ...

... Based on use of high-resolution inductively-coupled mass-spectrometry (ICP-MS), we developed a method for analysis of Zn, Cd, Se and also iron ...

... accomplished based on the development of a method which uses high-resolution inductively-coupled mass-spectrometry (ICP-MS) for the analysis ...

... 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...

We report for the first time the absolute quantification of a metalloprotein separated by nondenaturing gel electrophoresis (GE) using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) in combination with species-specific isotope dilution mass spectrometry (IDMS). The proposed method is based on the use of an ...

Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is applied for the analysis of powdered clays used for water filtration. For the quantitative determination of trace element concentrations in clays, three matrix dilutions of red clay (RAIP) and brick clay-679 (NBS) reference materials are used to perform calibration curve. A mixture ...

Otolith (fish ear bone) chemistry has proven to be an exceptional tool for the identification of essential fish habitats in marine and freshwater environments. These measurements, which explore the variations in trace element content of otoliths relative to Calcium (eg., Ba/Ca, Mg/Ca etc.), provide data to resolve the differences in habitat water chemistry on the watershed to catchment scale. ...

A method for the direct multi-element determination of Cl, S, Hg, Pb, Cd, U, Br, Cr, Cu, Fe, and Zn in powdered coal samples has been developed by applying inductively coupled plasma isotope dilution mass spectrometry (ICP-IDMS) with laser-assisted introduction into the plasma. A sector-field ICP-MS with a mass resolution of 4,000 and a ...

Femtosecond laser ablation inductively coupled plasma mass spectrometry was used for the quantification of 23 metallurgical relevant elements in unalloyed, alloyed and highly alloyed steels, and super alloys. It was shown that by using scanning mode ablation with large ablation spot diameters (250 ?m), stable and representative ...

Methods are presented for in situ determination of Pb/U, Pb/Th, and Pb/Pb ages in monazite by laser ablation, single-collector, magnetic sector inductively coupled plasma-mass spectrometry (ICP-MS). Analytical precisions for individual spot analyses are +/-2-3% for 206Pb/238U and 207Pb/235U, 4% for 208Pb/232Th, and 1-2% for 207Pb/206Pb ...

An analytical method for determining essential elements (Zn, Fe and Cu) and toxic elements (Cr, Pb and U) on single hair strands by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-SFMS) using a double focusing sector field mass spectrometer was developed. Results obtained directly using LA-ICP-SFMS of hair were compared with those ...

Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) was used to quantify and monitor the concentration of Pt along a single strand of hair from a patient who had been treated with cisplatin as cytostatic drug. The sensitivity of the analytical method developed could be increased by total ...

In this study a ICP-MS-method was developed for the determination of Be and Al in ground and drinking-water samples. Detection limits are 50 ng/l Al if care is taken to avoid Al contamination; the precision amounts to 2% RSD at elevated concentrations. Sp...

Inductively coupled plasma mass spectrometry (ICP-MS) complements the traditional methods of quantitation of radioactive isotopes. Because of the favorable ionization potential of most actinides and their daughter products, the argon plasma provides a rich, stable source of ions, which are introduced through a plasma-mass spectrometer interface into the ...

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 ...

The role of laser ablation ICP-MS (LA-ICP-MS) continues to expand both in geological sciences and other fields. As the technique continues to gain popularity, so too does the need for good reference materials and methods development and validation. Matrix matched reference materials (RMs) are required for ...

The inductively coupled plasma in combination with a mass spectrometer (ICP/MS) has been used for the determination of metals in different Saudi Arabian crude oils (Arab Berri, Arab heavy, Arab medium and Arab light). A previously investigated extraction method has been applied in the determination of metals in oil to the sub ppm level.

Inductively coupled plasma mass spectrometry (ICP-MS) has become the method of choice for elemental and isotopic analysis. Several factors contribute to its success. Modern instruments are capable of routine analysis at part per trillion levels with relative detection limits in part per quadrillion levels. Sensitivities in these instruments can be as high ...

The importance of glass as evidence of association between a crime event and a suspect has been recognized for some time. Glass is a fragile material that is often found at the scenes of crimes such as burglaries, hit-and-run accidents and violent crime offenses. The physical and chemical properties of glass can be used to differentiate between possible sources and as evidence of association ...

This paper describes a simple method for simultaneous preconcentration and matrix reduction during the analysis of rare earth elements (REEs) in water samples through laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). From a systematic investigation of the co-precipitation of REEs using magnesium hydroxide, we ...

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...

The authors have previously reported the use of laser ablation ICP-MS as a powerful analytical tool for elemental analysis of glass. LA is a simpler, faster and less intrusive sample introduction method than the conventional solution ICP-MS. Due to the minute amount of material removed in LA ( approximately 300ng, ...

Microanalysis of trace elements in hydrothermal quartz can improve understanding of the chemical dynamics of ore-forming systems. Quartz is expected to vary in composition because of the wide range of formation temperatures and parent fluid compositions. Compositional variations are evident in the variations in cathodoluminescence (CL) intensity of precipitated quartz, which is a result of ...

Strong cation exchange HPLC with the parallel ICP MS and electrospray hybrid linear ion trap quadrupole orbital trap mass spectrometry (ESI Orbitrap MS) detection was developed for the study of the metabolomic pattern of selenium in selenium-rich yeast. The mobile phase composition (gradient of ammonium formate in 20% methanol) was optimized to obtain ...

The combination of laser ablation and inductively coupled plasma mass spectrometry (LA-ICPMS) allows for rapid chemical analysis of solid samples at high spatial resolution. Calibration of the technique is limited by the small number of reliable standards available and by the diversity of solid matrices, including silicates, oxides, sulfides, carbonates, metals, etc. The ...

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 ...

The importance of small amounts of glass and paint evidence as a means to associate a crime event to a suspect or a suspect to another individual has been demonstrated in many cases. Glass is a fragile material that is often found at the scenes of crimes such as burglaries, hit-and-run accidents and violent crime offenses. Previous work has demonstrated the utility of elemental analysis by ...

To establish an identification method for the forensic analysis of blue ballpoint ink by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), 95 kinds of blue ballpoint pen from different manufacturers were detected. These blue ballpoint pens were classified into 34 groups according to their metal element ...

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 ...

Some experiments to study the influence of electrophoresis conditions and subsequent LA-ICP-MS (laser ablation-inductively coupled plasma mass spectrometry) determination of two metal-binding proteins with different metal-protein affinities (superoxide dismutase, containing Cu and Zn, and alcohol dehydrogenase, containing Zn) are performed. In ...

The potential of high-precision calcium and lead isotope ratio measurements using laser ablation coupled to multicollector inductively coupled plasma mass spectrometry (LA-MC-ICP-MS) to aid distinction between four genuine and five counterfeit pharmaceutical packaging samples and further classification of counterfeit packaging samples has been evaluated. ...

We present (1) a simple approach to correct the mass bias as well as isobaric interferences for Hf-Lu isotopic geochemistry of spiked and unspiked zircon samples, (2) new Lu and Nd isotopic data on the zircon standard 91500, and (3) a new 176Hf/177Hf reference value on the zircon standard 91500 specific for MC-ICP-MS instruments. The chemical procedure follows that reported previously for ...

An alternative approach for the evaluation of isotope ratio data using LA-MC-ICP-MS will be presented. In contrast to previously applied methods it is based on the simultaneous responses of all analyte isotopes of interest and the relevant interferences without performing a conventional background correction. Significant improvements in precision and ...

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. ...

Dating of single zircon crystals by both the (U-Th)/He and U/Pb methods (He-Pb* double-dating) provides high-temperature (crystallization or high-grade metamorphism) and low-temperature ( �180 � C) ages. Advantages of He-Pb* double-dating of detrital zircons includes greatly improved resolution of source terrain provenance, as well as constraints on depositional ages of ...

This article reviews recent developments in the use of multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS) to provide high-precision carbon isotope ratio measurements. MC-ICP-MS could become an alternative method to isotope ratio mass spectrometry (IRMS) for rapid carbon isotope ratio determinations in organic ...

Apatite (U-Th-Sm)/He (AHe) thermochronology is a staple of tectonic studies. This technique is complicated by the large (~20 ?m) stopping distance of alpha particles, which necessitates a correction for the daughter He lost by alpha ejection. The standard approach involves a geometric correction based on surface area to volume ratio and an assumption of U,Th, and Sm homogeneity. In this study we ...

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 ...

Reasons for signal suppression during the analysis of light petroleum matrices by inductively coupled plasma mass spectrometry (ICP MS) were examined. A decrease of the ionization efficiency of the plasma was found to be the principal factor responsible for this loss of sensitivity. Consequently, an interface based on a total consumption micronebulizer and ...

The Hazards Control Department at Lawrence Livermore National Laboratory (LLNL) uses Inductively Coupled Plasma Mass Spectrometer (ICP/MS) technology to analyze uranium in urine. The ICP/MS used by the Hazards Control Department is a Perkin-Elmer Elan 6000 ICP/MS. The Department of Energy Laboratory Accreditation Program requires that the total error be ...

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 ...