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Author Minamisawa, Hiroaki ♦ Murashima, Kenji ♦ Minamisawa, Mayumi ♦ Arai, Nobumasa ♦ Okutani, Tadao
Source J-STAGE
Content type Text
Publisher The Japan Society for Analytical Chemistry
Language English
Abstract A sensitive and simple method for the determination of trace amounts of indium in water samples by graphite furnace atomic absorption spectrometry (GFAAS) after coprecipitation with chitosan was investigated. Indium was quantitatively preconcentrated from water samples by coprecipitation with chitosan at pH 7.0-9.0. The coprecipitant was easily dissolved with acetic acid, and indium in the resulting solution was determined by GFAAS. The addition of lanthanum as a chemical modifier was more effective for the atomic absorbance of indium. The detection limit (S/N ≥ 3) for indium was 0.04 μg $dm^{-3},$ and the relative standard deviations (n = 5) were 3.5-4.5% at 1.0 μg/100 $cm^{3}.$ The results obtained in this study indicate that the proposed method can be successfully applied to the determination of trace indium in water samples.
ISSN 09106340
Learning Resource Type Article
Publisher Date 2003-01-01
e-ISSN 13482246
Journal Analytical Sciences(analsci)
Volume Number 19
Issue Number 3
Page Count 4
Starting Page 401
Ending Page 404


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