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New procedures for arsenic speciation: a review.

Ming-Li Chen1, Lin-Yu Ma1, Xu-Wei Chen1

  • 1Research Center for Analytical Sciences, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China.

Talanta
|May 21, 2014
PubMed
Summary

This review summarizes new analytical methods for arsenic speciation. High-performance liquid chromatography with inductively coupled plasma mass spectrometry and hydride generation atomic spectrometry are the most effective techniques for environmental and biological samples.

Keywords:
Arsenic speciationPreconcentration/separationReviewSample pretreatment

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Area of Science:

  • Analytical Chemistry
  • Environmental Science
  • Biochemistry

Background:

  • Arsenic speciation is crucial for understanding its toxicity and environmental fate.
  • Accurate determination of arsenic species requires advanced analytical techniques.
  • Recent advancements have focused on improving sensitivity, selectivity, and efficiency.

Purpose of the Study:

  • To review and summarize recent analytical methods for arsenic speciation.
  • To compare the performance of various sample pretreatment techniques.
  • To identify the most powerful hyphenated methodologies for arsenic speciation.

Main Methods:

  • Solid phase extraction
  • Liquid-liquid extraction
  • Hydride generation
  • Liquid chromatography
  • Capillary electrophoresis
  • Inductively coupled plasma mass spectrometry
  • Hydride generation atomic spectrometry

Main Results:

  • Various sample pretreatment techniques offer effective preconcentration and separation.
  • Coupling separation techniques with suitable detection modes enhances sensitivity and selectivity.
  • High-performance liquid chromatography coupled with ICP-MS and HG-AFS are the most powerful hyphenated methods.

Conclusions:

  • The reviewed methods provide effective tools for arsenic speciation.
  • Advanced hyphenated techniques are essential for accurate analysis in complex matrices.
  • Continued development in analytical methodologies is vital for environmental and biological monitoring.