An assessment of sampling, preservation, and analytical procedures for arsenic speciation in potentially contaminated waters.

An assessment of sampling, preservation, and analytical procedures for arsenic speciation in potentially contaminated waters. Research Abstract Details 

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An assessment of sampling, preservation, and analytical procedures for arsenic speciation in potentially contaminated waters. Abstract Text:

Youn-Tae Kim,Hyeon Yoon,Cheolho Yoon,Nam-Chil Woo,Youn-Tae Kim,Hyeon Yoon,Cheolho Yoon,Nam-Chil Woo,

This study was undertaken to ascertain optimal methods of sampling, preserving, separating, and analyzing arsenic species in potentially contaminated waters. Arsenic species are readily transformed in nature by slight changes in conditions. Each species has a different toxicity and mobility. The conventional field sampling method using filters of 0.45 microm in size could overestimate the dissolved arsenic concentrations, as passing suspended particles that can act as a sink or source of arsenic depending on the site condition. For arsenic species in neutral pH and iron-poor waters, the precipitation can be stable for up to 3 days without any treatment, but for longer periods, a preservative, such as phosphoric acid, is required. Also, the analytical procedure must be selected carefully because the levels and hydride generation efficiencies of arsenic in different species can vary, even for the same amount of arsenic. For arsenic speciation in samples that also include organic species, a hybrid high-performance liquid chromatography (HPLC) column and inductively coupled plasma mass spectrometry (ICP-MS) gave the best resolution and lowest detection limits. However, the procedure using a solid phase extraction (SPE) cartridge can be used economically and conveniently for analyzing samples containing only inorganic arsenic species, such as groundwater, especially that related to mine activity.

An assessment of sampling, preservation, and analytical procedures for arsenic speciation in potentially contaminated waters. Publishing Authors By Initials

YT Kim,H Yoon,C Yoon,NC Woo,YT Kim,H Yoon,C Yoon,NC Woo,

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An assessment of sampling, preservation, and analytical procedures for arsenic speciation in potentially contaminated waters. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Environmental geochemistry and health

VOLUME: 29

Page Numbers: 337-46

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ISSN: 0269-4042

DAY: 20

MONTH: Aug

YEAR: 2007

An assessment of sampling, preservation, and analytical procedures for arsenic speciation in potentially contaminated waters. Information

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LANGUAGE: eng

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Grant and Affiliation Information for An assessment of sampling, preservation, and analytical procedures for arsenic speciation in potentially contaminated waters.

AFFILIATION: Department of Earth System Sciences, Yonsei University, Seoul, Korea.

Country: Netherlands

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MEDLINETA: Environ Geochem Health

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