HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Masscheleyn, P. H. Articles by Patrick, W. H. Search for Related Content PubMed Articles by Masscheleyn, P. H. Articles by Patrick, W. H., Jr. Agricola Articles by Masscheleyn, P. H. Articles by Patrick, W. H.

A Hydride Generation Atomic Absorption Technique for Arsenic Speciation

Laboratory for Wetland Soils and Sediments, Louisiana State University, Baton Rouge, LA 70803-7511.

^* Corresponding author.

ABSTRACT

Based on an investigation of hydride generation responses in solutions of various acidities containing nanogram quantities of arsenite [As(III)], arsenate [As(V)], monomethylarsonic acid (MMAA) and dimethylarsinic acid (DMAA) a sensitive analytical method for the accurate determination of inorganic and organic As species in aqueous solutions was developed. After a pH-selective reduction, the arsenic species were condensed in a U-tube filled with a gas chromatographic packing immersed in liquid N₂. The species were then separated by slow warming of the trap and measured with an atomic absorption spectrophotometer. The arsines from inorganic As (III) were selectively generated from a solution buffered at a pH of 6.0. The solution of then further acidified to a pH corresponding to 2 M HCl and analyzed for As(V). A second sample aliquot, buffered at pH 1.5 with oxalic acid, was used for the quantitative determination of [As(III) + As(V)], MMAA and DMAA.

Contribution from the Laboratory for Wetland Soils and Sediments, Center for Wetland Resources, Louisiana State Univ.

Received for publication January 22, 1990.

This article has been cited by other articles:

				S. Gao, R. Fujii, A. T. Chalmers, and K. K. Tanji Evaluation of Adsorbed Arsenic and Potential Contribution to Shallow Groundwater in Tulare Lake Bed Area, Tulare Basin, California Soil Sci. Soc. Am. J., January 1, 2004; 68(1): 89 - 95. [Abstract] [Full Text] [PDF]

				C.A. Jones, H.W. Langner, K. Anderson, T.R. McDermott, and W.P. Inskeep Rates of Microbially Mediated Arsenate Reduction and Solubilization Soil Sci. Soc. Am. J., March 1, 2000; 64(2): 600 - 608. [Abstract] [Full Text]