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Automated atomic absorption determination of arsenic, antimony and selenium in natural waters
A method is described for the determination ofsu b-microgram levels of antimony, arsenic, an d selenium in natural waters. Stibine, arsine, and hydrogen selenide are produced from the samples in an automated system and passed to a tube furnace mounted in the light path of an atomic absorption spectrophotometer. The use of a tube furnace as a covalent hydride decomposition device gives an increase in sensitivity over a conventional hydrogen-argon-entrained air flame of at least two orders of magnitude. The method will analyse 40 samples an hour with a limit of detection of 0.1 myg/l. for arsenic and selenium and 0.5 myg/l. for antimony. With a dual-channel spectrophotometer, simultaneous determinations of arsenic and selenium have been made on a large number of natural water samples.
Automated atomic absorption determination of arsenic, antimony and selenium in natural waters
A method is described for the determination ofsu b-microgram levels of antimony, arsenic, an d selenium in natural waters. Stibine, arsine, and hydrogen selenide are produced from the samples in an automated system and passed to a tube furnace mounted in the light path of an atomic absorption spectrophotometer. The use of a tube furnace as a covalent hydride decomposition device gives an increase in sensitivity over a conventional hydrogen-argon-entrained air flame of at least two orders of magnitude. The method will analyse 40 samples an hour with a limit of detection of 0.1 myg/l. for arsenic and selenium and 0.5 myg/l. for antimony. With a dual-channel spectrophotometer, simultaneous determinations of arsenic and selenium have been made on a large number of natural water samples.
Automated atomic absorption determination of arsenic, antimony and selenium in natural waters
Automatische Bestimmung von Arsen, Antimon, und Selen in natuerlichen Gewaessern mit Hilfe der Atomabsorption
Goulden, P.D. (author) / Brooksbank, P. (author)
Analytical Chemistry ; 46 ; 1431-1436
1974
6 Seiten, 4 Bilder, 3 Tabellen, 8 Quellen
Article (Journal)
English
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