Studies on direct solid sampling for graphite furnace AAS (Review).
نویسندگان
چکیده
منابع مشابه
Evaluation of a New Forked Platform Design for Graphite Furnace AAS Authors
Graphite furnace techniques are characterized by excellent analytical sensitivity. They are methods of choice for the determination of trace elements in various environmental, biological, and clinical samples. However, they can be plagued by chemical and background interferences which complicate methods development and sample analysis. Using the graphite platform technique, these interferences ...
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A fast and accurate analytical method was established for the simultaneous direct determination of aluminum, calcium and iron in silicon carbide and silicon nitride powders by graphite furnace atomic absorption spectrometry using a slurry sampling technique and a Hitachi Model Z-9000 atomic absorption spectrometer. The slurry samples were prepared by the ultrasonication of silicon carbide or si...
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Graphite furnace techniques are characterized by excellent analytical sensitivity and are the methods of choice for the determination of trace elements in various environmental, biological, and clinical samples. However, they can be plagued by matrix interferences which complicate methods development and sample analysis. This is particularly true for the determination of volatile elements in co...
متن کاملGraphite Furnace AAS: Application of Reduced Palladium as a Chemical Modifier
Chemical modification techniques are widely used in graphite furnace atomic absorption spectrometry (GFAAS). Palladium is a very effective chemical modifier and can be used to stabilize many elements to several hundred degrees higher than the temperatures possible with current methods [1-9]. Of the elements tested, the greatest temperature shifts are achieved for the semi-metallic elements such...
متن کاملSlurry sampling of sediments for direct determination of Cu, Mn, Ni, Sn and Zn by graphite furnace atomic absorption spectrometry
In this study, methodologies were developed for the determination of metals (Cu, Mn, Ni, Sn and Zn) in sediments prepared as slurries, which were maintained homogeneous by the introduction of air supplied by an aquariam pump by GF AAS (Graphite Furnace Atomic Absorption Spectrometry). The optimization of the pyrolysis and atomization temperatures were done through pyrolysis and atomization temp...
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ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 1994
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.43.661