Six hundred and thirty references are cited in this review. The information in the review is divided into 12 major areas: books, reviews, and bibliographies; fundamental studies in flames; developments in instrumentation; measurement techniques and procedure; flame emission spectrometry; flame atomic absorption ...

Reviews developments in ultraviolet and light absorption spectrometry from December 1981 through November 1983, focusing on the chemistry involved in developing suitable reagents, absorbing systems, and methods of determination, and on physical aspects of the procedures. Includes lists of spectrophotometric methods for metals, ...

A simple and rapid procedure for measuring total mercury in fish tissues is evaluated and compared with conventional techniques. Using an automated instrument incorporating combustion, preconcentration by amalgamation with gold, and atomic absorption spectrometry (AAS), mill...

This report documents the results of a field study carried out in Baytown, Texas in August 1993. ne goal of the field study was to evaluate calibration and audit procedures for a differential optical absorption spectrometry (DOAS) system. he other major goal of the study was to c...

The simultaneous determination of cadmium and lead by multi-element atomic absorption spectrometry with electrochemical atomization is proposed by employing a problem-based approach. The reports indicate that the students assimilated the principles of the simultaneous atomic absorption spectrometry (SIMAAS), the ...

This review is presented in six sections. Sections focus on literature related to: (1) developments in instrumentation, measurement techniques, and procedures; (2) performance studies of flames and electrothermal atomizers; (3) applications of atomic absorption spectrometry; (4) analytical comparisons; (5) atomic fluorescence ...

Vanadium determination was carried out in petroleum samples by Atomic Absorption Spectrometry with Electrothermal Atomization. Three procedures of sample preparation were studied: xylene solution, dry calcination and wet digestion with sulfuric acid and hydrogen peroxide. The xylene dissolution and dry calcination were the optimum ...

Hydrolysis of frozen concentrated orange juice with concentrated nitric acid has been evaluated as a sample preparation method prior to flame atomic absorption spectrometric measurement of certain elements in orange juice concentrate. The hydrolysis proce...

... Accession Number : ADA278263. Title : Ultraviolet Absorption Spectrometry (UVAS) and Liquid Atomic Emission Spectrometry (LAES. ...

John Ottaway was the Head of the Analytical Chemistry Research Group at the University of Strathclyde for almost 20 years and during that period much of the research performed by the Group was devoted to the development of improved analytical procedures for the determination of trace metals in clinical and biological samples. Although this was only one aspect of the Group's ...

The methodology of the hydride AAS technique has become extremely complex and in consequence it can be difficult to assess accurately the effects of individual factors on the determination, and to select the most suitable procedure for a particular purpos...

... also collected and submitted to the same procedure. Radioactivity was quantified by liquid scintillation spectrometry2 with 1- ... was added to eliminate color from chlorophyll. After radioactivity determi...

We present a practical application of a phenomenological model for physicochemical atomization processes in determining heavy metal content by electrothermal atomic absorption spectrometry. Comparison of the analysis results with the NAHRES-33 (IAEA/AL/079) certificate of composition confirms the feasibility of using the proposed ...

A review is made of the progress achieved in the last 15 years in the field of trace characterization of powders by direct atomic-absorption spectrometry. The studies covered include the development of novel atomization devices, modification of existing atomic-absorption spectrometers, and the use of closed-cavity vaporizers. A ...

Some spectral effects in atomic absorption spectrometry are reported for magnesium--terbium and osmium--chromium interference. (JFP)

The levels of trace elements in different types of food material consumed in Turkey were determined by flame and graphite furnace atomic absorption spectrometry. Food samples were digested with dry ashing, wet ashing and microwave digestion procedures in this study. The microwave digestion procedure was chosen for ...

This volume consists of thirteen papers describing the analytical procedures selected at the National Bureau of Standards (NBS) for the determination of Ag, Al, As, Be, Bi, Ca, Cd, Cr, Cu, Fe, Hg, K, Mg, Mn, Mo, Na, Ni, Pb, Pt, Sb, Se, Te, Tl, V, and Zn in biological and botanical materials. These procedures are used at the present time for the ...

absorption spectrometry. Its design was based on that of the ATMOS ... the composition of the Earth's atmosphere by solar occultation spectrometry. The ...

Two extraction and two quantitation procedures are given for the quantative determination of lead in paints along with recommended QA/QC practices. he procedures were evaluated with 0.10 g samples of synthetic or old real-world paints that had been crushed or pulverized. oth extr...

Two extraction and two quantitation procedures are given for the quantative determination of lead in paints along with recommended QA/QC practices. The procedures were evaluated with 0.10 g samples of synthetic or old real-world paints that had been crush...

This protocol provides guidelines for the analysis of Teflon filter samples for toxic metals, either by graphite furnace atomic absorption spectrometry (GFAAS) or by hydride generation atomic fluorescence spectrometry (HGAFS). This method involves the extraction of analytes from ...

...Procedure) in appendix A to this subpart; or by EPA Method 6010B, Inductively Coupled Plasma-Atomic Emission Spectrometry, EPA Method 6020, Inductively Coupled Plasma-Mass Spectrometry, EPA Method 7520, Nickel Atomic Absorption,...

...Instrumental Analyzer Procedure). 2 EPA Method 6010B, Inductively Coupled Plasma-Atomic Emission Spectrometry, EPA Method 6020, Inductively Coupled Plasma-Mass Spectrometry, EPA Method 7520, Nickel Atomic Absorption, Direct...

This review focuses on the determination of uranium using spectroanalytical techniques that are aimed at total determination such as flame atomic absorption spectrometry (FAAS), electrothermal atomic absorption spectrometry (ETAAS), inductively coupled plasma optical emission spectrometry ...

Recent developments and applications in the production of thermosprays directly into flame furnaces to improve the analytical sensitivity in atomic absorption spectrometry are reviewed in this manuscript. Principles, characteristics, instrumentation, and applications of this analytical technique for trace elements determination in several matrices are ...

Recent advances in instrumentation technology for atomic absorption spectrometry using the heated graphite furnace now make it possible to analyze for many trace metals after concentration from small volumes (50-200 mL) of seawater when the major ions are eliminated. Coprecipitation with ferric hydroxide requires few reagents and minimal sample ...

The increased awareness of the deleterious effects of polynuclear aromatic (PNA) compounds emphasizes the need for instruments that are capable of monitoring these compounds and also are suitable for use in health protection programs. Second-derivative uv-absorption spectrometry with least-squares spectral analysis shows promise as a method for analyzing ...

The increased awareness of the deleterious effects of polynuclear aromatic (PNA) compounds emphasizes the need for instruments that are capable of monitoring these compounds and also are suitable for use in health protection programs. Second-derivative UV-absorption spectrometry with least-squares spectral analysis shows promise as a method for analyzing ...

The theory for the evaluation of the effects of geometry in gamma ray absorption is developed for cylindrical scintillation detectors as applicable to borehole gamma spectrometry. The results of a laboratory experiment are shown for comparison. A calibration procedure to determine detector efficiency is given for application to ...

An interlaboratory study in which 10 laboratories participated was conducted to provide precision and accuracy statements for the analysis of 18 metals by graphite furnace atomic absorption spectrometry. Samples were prepared and analyzed using procedures specified in 'Methods fo...

A solvent extraction procedure has been developed for the determination of tellurium in all types of steel. After dissolution, the sample is extracted with trioctylphosphine oxide-methyl isobutyl ketone. The extract is then nebulized directly into the atomic absorption burner flame. This method requires 25 minutes and can determine as low as 2 parts per ...

Because of the nutritional and toxicological significance of low selenium concentrations in agricultural crops, a procedure utilizing wet digestion followed by hydride generation/condensation-flame atomic absorption was developed for the routine analysis ...

Because of the nutritional and toxicological significance of low selenium concentrations in agricultural crops, a procedure utilizing wet digestion followed by hydride generation/condensation-flame atomic absorption was developed for the routine analysis of selenium in different ...

S>Tributyl phosphate is extracted from the aqueous sample into carbon tetrachloride. The optical density of the extract it an absorption peak at 1029 cm/sup -1/, ascribed to the P-O-C linkage, is measured. The method is intended for the determination of tributyl phosphite in any aqueous raffinate, and is based on standard chemical and infrared ...

Problems and possibilities of the determination of Co in serum and urine samples by electrothermal atomic absorption spectrometry (ETAAS) are described. Optimal instrumental parameters as well as a suitable atomizer, calibration procedure and hydrogen peroxide as modifier are proposed for direct ETAAS measurement of Co in serum and ...

The purpose of this SOP is to detail the operation and maintenance of an Instruments, SA Inc., Jobin-Yvon Model 70 (JY-70) inductively coupled plasma atomic emissions spectrometry (ICP-AES). This procedure was followed to ensure consistent data retrieval during the Arizona NHEXA...

The use of a platinum-loop atomizer and an electrodeless discharge lamp has been applied to the atomic-absorption determination of mercury at the 183.0-nm resonance line. Oxygen was flushed from the light-path with argon, giving adequate readiation transmission characteristics and a sensitivity of 9 ppm of iodine for 1% absorption. The method is prone to ...

Cadmium concentrations in human urine are typically at or below the 1 microgL(-1) level, so only a handful of techniques may be appropriate for this application. These include sophisticated methods such as graphite furnace atomic absorption spectrometry and inductively coupled plasma mass spectrometry. While tungsten coil atomic ...

Consideration is given to the influence of flame temperature on the emission signal in atomic emission flame spectrometry and on the absorption signal in atomic absorption flame spectrometry. It is concluded that, if the discussion of the influence of the...

An analytical procedure was proposed to study the operational fractionation of Ca and Mg in bee honeys, fruit juices and tea infusions. The protocol devised was based on the solid phase extraction of distinct metal fractions on different sorbents, namely strong acidic cation exchanger Dowex 50W x 4, weak acidic cation exchanger Diaion WT01S and strong basic anion exchange ...