Chromatographia

, Volume 69, Issue 5–6, pp 587–591 | Cite as

Arsenic Speciation in Sargassum fusiforme by Microwave-Assisted Extraction and LC-ICP-MS

  • Chao Han
  • Xuan Cao
  • Jing-Jing Yu
  • Xiao-Ru Wang
  • Yan Shen
Limited Short Communication
First Online:
Received:
Revised:
Accepted:

Abstract

Sargassum fusiforme, the common Chinese edible seaweeds, was investigated for total arsenic concentration by ICP-MS and for individual arsenic species by LC-ICP-MS. For this purpose, a microwave-assisted procedure was used for the extraction of arsenic species in freeze-dried seaweed and an analytical procedure for the sensitive and efficient speciation of the arsenic species As(III), dimethylarsinic acid, monomethyl arsonic acid, As(V), arsenobetaine and arsenocholine was optimized. Arsenic compounds were extracted from the seaweed with a methanol/water mixture; the extracts were evaporated to dryness, redissolved in water, and chromatographed on an anion exchange column. The arsenic species in Sargassum fusiforme are abundant. In some sample, the majority of arsenic compounds detected in the extracts were inorganic species, with a predominance of As (V). In addition, some significant amounts of unidentified arsenic compounds were also observed in the extracts.

Keywords

Anion exchange chromatography LC-ICP-MS Microwave-assisted solvent extraction Arsenic species Sargassum fusiforme 
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Notes

Acknowledgment

Financial support from the Zhejiang Entry-Exit Inspection and Quarantine Bureau of P.R.C project (ZK200703) is gratefully acknowledged.

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Copyright information

© Vieweg+Teubner | GWV Fachverlage GmbH 2008

Authors and Affiliations

  • Chao Han
    • 1
  • Xuan Cao
    • 2
  • Jing-Jing Yu
    • 2
  • Xiao-Ru Wang
    • 2
  • Yan Shen
    • 3
  1. 1.Wenzhou Entry-Exit Inspection and Quarantine Bureau of P.R.CWenzhouPeople’s Republic of China
  2. 2.Qingdao Key Lab of Analytical Technology Development and Standardization of Chinese Medicines, First Institute Oceanography of SOAQingdaoPeople’s Republic of China
  3. 3.College of Chemistry and Materials ScienceWenzhou UniversityWenzhouPeople’s Republic of China

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