Determination of arsenic speciation in sulfidic waters by Ion Chromatography Hydride-Generation Atomic Fluorescence Spectrometry (IC-HG-AFS)

Nicole S. Keller; Andri Stefánsson; Bergur Sigfússon

doi:10.1016/j.talanta.2014.04.035

Determination of arsenic speciation in sulfidic waters by Ion Chromatography Hydride-Generation Atomic Fluorescence Spectrometry (IC-HG-AFS)

Nicole S. Keller^*, Andri Stefánsson, Bergur Sigfússon

^*Corresponding author for this work

Faculty of Earth Sciences

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

A method for the analysis of arsenic species in aqueous sulfide samples is presented. The method uses an ion chromatography system connected with a Hydride-Generation Atomic Fluorescence Spectrometer (IC-HG-AFS). With this method inorganic As^III and As^V species in water samples can be analyzed, including arsenite (^HnAsIIIO3n-3), thioarsenite (^HnAsIIIS3n-3), arsenate (^Hn ^AsVO4n-3), monothioarsenate (^HnAsVSO3n-3), dithioarsenate (^HnAsVS2O2n-3), trithioarsenate (^HnAsVS3On-³) and tetrathioarsenate (^HnAsVS4n-3). The peak identification and retention times were determined based on standard analysis of the various arsenic compounds. The analytical detection limit was ~1-3 μg L^-1 (LOD), depending on the quality of the baseline. This low detection limit makes this method also applicable to discriminate between waters meeting the drinking water standard of max. 10 μg L^-1 As, and waters that do not meet this standard. The new method was successfully applied for on-site determination of arsenic species in natural sulfidic waters, in which seven species were unambiguously identified.

Original language	English
Pages (from-to)	466-472
Number of pages	7
Journal	Talanta
Volume	128
DOIs	https://doi.org/10.1016/j.talanta.2014.04.035
Publication status	Published - 1 Oct 2014

Bibliographical note

Funding Information:
The present study was supported by the Icelandic Research Fund (Rannis Grant no. 90229021 ). We are thankful to J. Gunnarsson Robin, Á. Sigurdardottir and I.M. Galeczka for their help with the field work. We also wish to thank an anonymous reviewer whose comments helped clarifying the text, and Dr. J.-M. Kauffmann for editorial handling.

Other keywords

Arsenic speciation
Geothermal fluids
Hydride Generation Atomic Fluorescence Spectrometry
Ion chromatography
On-site chemical analysis

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10.1016/j.talanta.2014.04.035

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title = "Determination of arsenic speciation in sulfidic waters by Ion Chromatography Hydride-Generation Atomic Fluorescence Spectrometry (IC-HG-AFS)",

abstract = "A method for the analysis of arsenic species in aqueous sulfide samples is presented. The method uses an ion chromatography system connected with a Hydride-Generation Atomic Fluorescence Spectrometer (IC-HG-AFS). With this method inorganic AsIII and AsV species in water samples can be analyzed, including arsenite (HnAsIIIO3n-3), thioarsenite (HnAsIIIS3n-3), arsenate (Hn AsVO4n-3), monothioarsenate (HnAsVSO3n-3), dithioarsenate (HnAsVS2O2n-3), trithioarsenate (HnAsVS3On-3) and tetrathioarsenate (HnAsVS4n-3). The peak identification and retention times were determined based on standard analysis of the various arsenic compounds. The analytical detection limit was ~1-3 μg L-1 (LOD), depending on the quality of the baseline. This low detection limit makes this method also applicable to discriminate between waters meeting the drinking water standard of max. 10 μg L-1 As, and waters that do not meet this standard. The new method was successfully applied for on-site determination of arsenic species in natural sulfidic waters, in which seven species were unambiguously identified.",

keywords = "Arsenic speciation, Geothermal fluids, Hydride Generation Atomic Fluorescence Spectrometry, Ion chromatography, On-site chemical analysis",

author = "Keller, {Nicole S.} and Andri Stef{\'a}nsson and Bergur Sigf{\'u}sson",

note = "Funding Information: The present study was supported by the Icelandic Research Fund (Rannis Grant no. 90229021 ). We are thankful to J. Gunnarsson Robin, {\'A}. Sigurdardottir and I.M. Galeczka for their help with the field work. We also wish to thank an anonymous reviewer whose comments helped clarifying the text, and Dr. J.-M. Kauffmann for editorial handling.",

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doi = "10.1016/j.talanta.2014.04.035",

language = "English",

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T1 - Determination of arsenic speciation in sulfidic waters by Ion Chromatography Hydride-Generation Atomic Fluorescence Spectrometry (IC-HG-AFS)

AU - Keller, Nicole S.

AU - Stefánsson, Andri

AU - Sigfússon, Bergur

N1 - Funding Information: The present study was supported by the Icelandic Research Fund (Rannis Grant no. 90229021 ). We are thankful to J. Gunnarsson Robin, Á. Sigurdardottir and I.M. Galeczka for their help with the field work. We also wish to thank an anonymous reviewer whose comments helped clarifying the text, and Dr. J.-M. Kauffmann for editorial handling.

PY - 2014/10/1

Y1 - 2014/10/1

N2 - A method for the analysis of arsenic species in aqueous sulfide samples is presented. The method uses an ion chromatography system connected with a Hydride-Generation Atomic Fluorescence Spectrometer (IC-HG-AFS). With this method inorganic AsIII and AsV species in water samples can be analyzed, including arsenite (HnAsIIIO3n-3), thioarsenite (HnAsIIIS3n-3), arsenate (Hn AsVO4n-3), monothioarsenate (HnAsVSO3n-3), dithioarsenate (HnAsVS2O2n-3), trithioarsenate (HnAsVS3On-3) and tetrathioarsenate (HnAsVS4n-3). The peak identification and retention times were determined based on standard analysis of the various arsenic compounds. The analytical detection limit was ~1-3 μg L-1 (LOD), depending on the quality of the baseline. This low detection limit makes this method also applicable to discriminate between waters meeting the drinking water standard of max. 10 μg L-1 As, and waters that do not meet this standard. The new method was successfully applied for on-site determination of arsenic species in natural sulfidic waters, in which seven species were unambiguously identified.

AB - A method for the analysis of arsenic species in aqueous sulfide samples is presented. The method uses an ion chromatography system connected with a Hydride-Generation Atomic Fluorescence Spectrometer (IC-HG-AFS). With this method inorganic AsIII and AsV species in water samples can be analyzed, including arsenite (HnAsIIIO3n-3), thioarsenite (HnAsIIIS3n-3), arsenate (Hn AsVO4n-3), monothioarsenate (HnAsVSO3n-3), dithioarsenate (HnAsVS2O2n-3), trithioarsenate (HnAsVS3On-3) and tetrathioarsenate (HnAsVS4n-3). The peak identification and retention times were determined based on standard analysis of the various arsenic compounds. The analytical detection limit was ~1-3 μg L-1 (LOD), depending on the quality of the baseline. This low detection limit makes this method also applicable to discriminate between waters meeting the drinking water standard of max. 10 μg L-1 As, and waters that do not meet this standard. The new method was successfully applied for on-site determination of arsenic species in natural sulfidic waters, in which seven species were unambiguously identified.

KW - Arsenic speciation

KW - Geothermal fluids

KW - Hydride Generation Atomic Fluorescence Spectrometry

KW - Ion chromatography

KW - On-site chemical analysis

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DO - 10.1016/j.talanta.2014.04.035

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C2 - 25059187

AN - SCOPUS:84903279624

SN - 0039-9140

VL - 128

SP - 466

EP - 472

JO - Talanta

JF - Talanta

ER -

Determination of arsenic speciation in sulfidic waters by Ion Chromatography Hydride-Generation Atomic Fluorescence Spectrometry (IC-HG-AFS)

Abstract

Bibliographical note

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