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ID 13846
Eprint ID
13846
FullText URL
Title Alternative
On-Site Determination of Arsenic in Soil Extract by Anodic Stripping Voltammetry with Gold Film Electrode after Solid Phase Pretreatment
Author
Furusho, Yoshiaki
Makita, Nobuaki
Ono, Masato
Ishiyama, Takashi
Takahashi, Motoyuki
Motomizu, Shoji
Abstract
A method for the on-site estimation of arsenic (As) contamination in soil by solid-phase extraction with a resin based on molecular recognition technology (SPE-MRT) and anodic stripping voltammetry (ASV) using a gold film microelectrode was developed. Optimized pretreatments were carried out as follows: 1 g of soil sample was taken and put into polypropylene test tube containing 33 mL 1 M hydrochloric acid solution, which was heated at 70 degree Celsius for 5 min using graphite block hot plate. As in the sample was extracted by shaking for 1 min using an automatic mini-shaker system. The extract was finally filtered through a 0.45 μm disk PTFE membrane filter. The extracted arsenic was electrodeposited on the gold film carbon microelectrode at −400 mV vs. Ag/AgCl for 1 min and the deposits were stripped at a rate of 5 mV/s to 580 mV vs. Ag/AgCl by using AnaLig® TE-3, Cu in soil extract was removed with 1 M hydrochloric acid for the determination of As. The method can eliminate Cu interference. The detection limit was 0.5 μg/L in soil extract. The results of voltammograms for As in the extracts from real soil samples were the same level as these obtained by a cross-check method using inductively coupled plasma mass spectroscopy (ICP-MS).
Keywords
solid phase extraction
anodic stripping voltammetry
soil extract
arsenic
Published Date
2008-01-29
Publication Title
分析化学
Publication Title Alternative
Bunseki Kagaku
Volume
volume56
Issue
issue12
Publisher
日本分析化学会
Publisher Alternative
The Japan Society for Analytical Chemistry
Start Page
1165
End Page
1169
ISSN
0525-1931
NCID
AN00222633
Content Type
Journal Article
Official Url
http://dx.doi.org/10.2116/bunsekikagaku.56.1165
language
日本語
Copyright Holders
日本分析化学会
File Version
publisher
Refereed
True
DOI