APPLICATION OF HYDRIDE GENERATION TO THE DETERMINATION OF TRACE CONCENTRATIONS OF ARSENIC BY CAPACITIVELY COUPLED MICROWAVE PLASMA

Authors
HUEBER DM MASAMBA WRL SPENCER BM WINEFORDNER JD
Citation
Dm. Hueber et al., APPLICATION OF HYDRIDE GENERATION TO THE DETERMINATION OF TRACE CONCENTRATIONS OF ARSENIC BY CAPACITIVELY COUPLED MICROWAVE PLASMA, Analytica chimica acta, 278(2), 1993, pp. 279-285
Citations number
15
Categorie Soggetti
Chemistry Analytical
Journal title
Analytica chimica acta → ACNP
ISSN journal
00032670
Volume
278
Issue
2
Year of publication
1993
Pages
279 - 285
Database
ISI
SICI code
0003-2670(1993)278:2<279:AOHGTT>2.0.ZU;2-0
Abstract
Studies are presented describing an application of the NaBH4 reduction of soluble arsenite to form arsine for ultra-trace level arsenic dete rmination by capacitively coupled microwave plasma atomic emission spe ctrometry. The arsine was condensed in a liquid nitrogen cooled trap, and introduced into the plasma after the elimination of reaction by-pr oducts that would reduce the excitation efficiency of the plasma. Use of a photodiode array detector provided a means of background correcti on. The procedure resulted in a limit of detection of 110 pg and a lin ear dynamic range of 10(4) for arsenic.