Determination of selenium in water by electrothermal atomic absorption spectrometry |
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Authors: | Kiyohisa Ohta and Masami Suzuki |
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Institution: | (1) Dept. of Chemistry, Fac. of Engineering, Mie University, Kamihama-cho, Tsu, 514 Mie-ken, Japan |
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Abstract: | Summary The electrothermal atomization of selenium has been investigated for the accurate determination of selenium in water samples. Hydrogen seriously affects the atomization temperature of selenium in a molybdenum micro-tube atomizer. The atomization of selenium also suffers from serious interferences caused by salts and other elements. The extraction of selenium diethyldithiocarbamate complex serves to eliminate the interferences from the matrix. The addition of copper allows the suppression of interferences from elements extracted with selenium. The method permits the determination of selenium(IV) and selenium(VI) separately.This research was in part funded by the Ministry of Education, Science and Culture, Japan, under Grant-in-Aid for Scientific Research, for which we express our appreciation. |
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Keywords: | Best von Selen in Wasser Spektrometrie Atomabsorption elektrotherm Atomisierung |
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