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Showing 1 to 20 of 208 for “"atomic absorption"”.
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Precision Null-Point Atomic Absorption Spectrochemical Analysis
Made available in DSpace on 2014-12-05T19:37:19Z (GMT). No. of bitstreams: 1 6001623.pdf: 3244958 bytes, checksum: 65ba60e43b36a3f228302dc5469247e1 (MD5) Previous issue date: 1960
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REACTIVE GASES IN ELECTROTHERMAL ATOMISATION ATOMIC ABSORPTION SPECTROMETRY
… been used as matrix modifiers in electrothermal atomic absorption spectroscopy (ETAAS). Oxidising gases such as air or nitrous-oxide, introduced during the charring stage, both thermally stabilised analytes such as lead, and improved the efficiency of pyrolysis by converting the normal charring …
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Atomic absorption spectrometry and its application in geochemistry
The atomic absorption method of analysis is reviewed. The theory describing the various phenomena such as atomic population, spectral line shapes, factors influencing absorption, analytical graph curvature, etc.are deduced. The practical aspects of atomic absorption are discussed with respect to: …
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Considerations Involving the Use of Atomic Absorption Spectroscopy as a Quantitative Analytical Technique
Made available in DSpace on 2014-12-09T17:34:58Z (GMT). No. of bitstreams: 1 6500829.pdf: 4050111 bytes, checksum: c5b2ffaf5ab4836baa67d07faad71b2e (MD5) Previous issue date: 1964
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Determination of Organic Compounds by Atomic Absorption Spectrophotometry (AAS) with Special Reference to Compounds Encountered in Environmental Problems
… for the determination of organic compounds by atomic absorption spectroscopy is given. The various techniques used are summarised, two examples chosen and discussed in detail in order to demonstrate the feasibility of the method. Saccharin, an important artificial sweetener, and common food …
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Direct determination of cadmium and beryllium in coal and fly ash slurries using graphite furnace atomic absorption spectrometry
Graphite Furnace Atomic Absorption Spectrometry (GFAAS) was used for the determination of cadmium and beryllium in coal and fly ash slurries. Sample preparation involved grinding the sample to a fine powder and slurrying it in a suitable solvent. Stable slurries were maintained by magnetic stirring …
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Comparison of an Advanced Mercury Analyzer with the Cold Vapor Atomic Absorption Technique for the Determination of Mercury in Coal
… for mercury analysis has been the cold vapor atomic absorption spectrometric technique (CVAAS). Recent developments in improving this technique have focused on procedures for concentrating mercury in the analyte or materials to improve detection. The LECO Corporation produces an Advanced …
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THE STUDY AND CHARACTERIZATION OF A NEW PROCEDURE FOR APPLYING CARBIDE COATINGS TO GRAPHITE FURNACES USED IN ATOMIC ABSORPTION SPECTROSCOPY
… carbide coatings to graphite furnaces used in atomic absorption spectroscopy. The proposed method consists of impregnating graphite furnaces, under reduced pressure, with a liquid metal chloride. After soaking in water to hydrolyze the metal chloride to metal oxide, the furnace is fired at high …
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Spectrochemical Investigation of the Laser Plume From an Aluminum Alloy Target by Time- and Spacially-Resolved Emission and Atomic Absorption Measurements: Instrumentation and Observations
Made available in DSpace on 2014-12-09T17:35:35Z (GMT). No. of bitstreams: 1 6612408.pdf: 3847702 bytes, checksum: 1b6aa772c96e0841a80cdff3f3789d8a (MD5) Previous issue date: 1966
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Development of a flameless atomic absorption assay for mercury in biological materials and levels of mercury detected in striped bass (Roccus saxatilis) collected in the San Joaquin Delta
… in a closed system directly connected with an atomic absorption spectrophotometer Seven tissues from ten samples of locally obtained Roccus saxatilis (striped bass) were analyzed, and a three-fold elevation of mercury levels in the liver over the levels in the filet noted. See Table XIX for a …
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Evaluation of Arsenic and Selenium Quantitation in Marcellus Shales and Flowback Saline Waters using Thiol Cotton Fibre-Graphite Furnace Atomic Absorption Spectroscopy and Diffusive Gradient in Thin Film Techniques
… and selenium was carried out by graphite furnace atomic spectroscopy (GFAAS). Extraction of arsenic and selenium from Marcellus shale exposed to HSW and WRF6 for varying lengths of time is also reported.;In addition, the role of hydrofluoric acid in microwave-assisted digestion and in the …
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The provenance of Bronze Age pottery from Central and Eastern Greece
… the total number of sherds were also analysed by atomic absorption spectrophotometry so that the results obtained by the two techniques could be compared. The interpretation of the results was facilitated by the use of, computer program packages for cluster and discriminant analysis. Both optical …
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Studies on the analytical chemistry of chromium in aqueous solutions
… can be directly determined by graphite furnace atomic absorption spectrometry since the technique has the same sensitivity for both oxidation states of chromium. Because of low concentrations of chromium in the aquatic environment, direct determination of the total chromium concentration in …
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Stroncio nustatymas vaistažolėse liepsnos atominės absorbcinės spektrometrijos metodu /
Determination of Strontium in Herbs by Flame Atomic Absorption Spectrometry Strontium is an alkaline earth metal. A mineral found in a lead mine, Scotland by A.Crawford in 1790. Strontium is a grey, silvery metal that is softer than calcium. Sr is well known from the minerals SrSO4 and SrCO3. …
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