期刊
ANALYTICA CHIMICA ACTA
卷 646, 期 1-2, 页码 6-16出版社
ELSEVIER
DOI: 10.1016/j.aca.2009.05.006
关键词
Arsenic; Stripping voltammetry; Speciation; Environment
The measurement of inorganic arsenic in the environment has received considerable attention over the past 40+ years due to its toxicity and prevalence in drinking water. This paper provides an overview of voltammetric techniques used since 2001. More than fifty papers from refereed analytical chemistry journals on the speciation and measurement of inorganic arsenic (As(III) and As(V)) in practical and environmental samples are included. The present review shows that stripping voltammetry is a sensitive and inexpensive technique. The new approaches include development of novel measurement protocols through media variation, development and use of new boron doped diamond electrodes modified with metals, nano Au-modified electrodes on carbon or carbon nano-tubes. novel rotating disc and vibrating electrodes to enhance mass transfer, and modified Hg(I) and thin film Bi on carbon for cathodic stripping voltammetry are discussed. Although, majority of the papers were of exploratory in nature, the trend towards developing a commercial standalone instrument for held use is still in progress. (C) 2009 Elsevier B.V. All rights reserved.
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