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A shipboard method for arsenic speciation using semi-automated hydride generation atomic fluorescence spectroscopy


Featherstone, AM and Boult, PR and O'Grady, BV and Butler, CV, A shipboard method for arsenic speciation using semi-automated hydride generation atomic fluorescence spectroscopy, Analytica Chimica Acta, 409, (1-2) pp. 215-226. ISSN 0003-2670 (2000) [Refereed Article]

DOI: doi:10.1016/S0003-2670(99)00862-4


The development of a semi-automated batch HG-AFS method for the shipboard determination of As(III), As(V), MMA and DMA is described. Procedures in the analytical sequence including addition of NaBH4 to samples, cooling and heating the U-trap used for pre-concentration and separation of the arsines, and logging the AFS output are automated. Overall control of the automated tasks into a logical analytical sequence is achieved using a commercially available data acquisition and control package, WORKBENCHMAC(TM). Further modifications required for the method to be adapted to shipboard use, including the use of a hydrogen generator, are also detailed.This method shows a number of advantages over a previously reported manual HG-AFS method including, shorter sample throughput time, increased precision and most significantly, ease of use under shipboard conditions.The semi-automated method was operated on the RSV Aurora Australis during a Southern Ocean voyage in March 1998. Arsenic measurements from a surface transect between 42° and 55°S along 141°30' E, are presented. Application of the method to more routine laboratory use is also discussed. Copyright (C) 2000 Elsevier Science B.V.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Analytical chemistry
Research Field:Analytical spectrometry
Objective Division:Environmental Management
Objective Group:Other environmental management
Objective Field:Other environmental management not elsewhere classified
UTAS Author:Featherstone, AM (Dr Alison Featherstone)
UTAS Author:O'Grady, BV (Dr Barry O'Grady)
ID Code:20272
Year Published:2000
Web of Science® Times Cited:19
Deposited By:Chemistry
Deposited On:2000-08-01
Last Modified:2011-08-04

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