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Simultaneous determination of As, Hg, Se and Sb by hydride generation-microwave induced plasma atomic emission spectrometry after preconcentration in a cryogenic trap

Citation

Dietz, C and Madrid, Y and Quevauviller, P and Camara, C, Simultaneous determination of As, Hg, Se and Sb by hydride generation-microwave induced plasma atomic emission spectrometry after preconcentration in a cryogenic trap, Journal of Analytical Atomic Spectrometry, 14 pp. 1349-1355. ISSN 0267-9477 (1999) [Refereed Article]

Copyright Statement

Copyright 1999 Royal Society of Chemistry

DOI: doi:10.1039/a902039j

Abstract

In this paper a system is presented which combines hydride generation with a preconcentration step in a cryogenic trap and detection using MIP-AES. The MIP has been operating at atmospheric pressure with a forward power of 30-150 W, using a TM010 cavity (Beenakker resonator), equipped with a tangential flow torch design. The plasma emission was observed end-on by the means of a CCD camera coupled to a 0.5 m Czerny-Turner design monochromator. Metal hydrides were generated batchwise in aqueous medium, preconcentrated in a liquid nitrogen cryogenic trap and then evaporated by electrical heating into the plasma discharge. The optimum working conditions have been found at the 1977 nm window working with a forward power of 130 W, a plasma gas flow rate of 270 ml min1 of helium, a carrier gas flow rate of 134 ml min1 of helium, a NaBH4 concentration of 2% and a HNO3 concentration of 0.66 M. Under these conditions detection limits of 2.0, 13, 2.2 and 3.3 g L1 for As, Hg, Se and Sb were achieved. The method was applied to the detemination of these analytes in spiked wastewater samples with recoveries of 95% or higher for all four analytes.

Item Details

Item Type:Refereed Article
Keywords:microwave induced plasma, multielement determination
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Analytical Chemistry not elsewhere classified
Objective Division:Environment
Objective Group:Natural Hazards
Objective Field:Natural Hazards in Fresh, Ground and Surface Water Environments
Author:Dietz, C (Dr Christian Dietz)
ID Code:84810
Year Published:1999
Web of Science® Times Cited:26
Deposited By:Central Science Laboratory
Deposited On:2013-06-03
Last Modified:2017-06-06
Downloads:0

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