Simultaneous Determination of Inorganic As(III), Sb(III) and Se(IV) by HG/ICP-AES using Citric/Citrate Buffer.

概要

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A method has been developed for the simultaneous determination of inorganic As (III), Sb (III) and Se (IV) by hydride generation inductively coupled plasma-atomic emission spectrophotometry (HG/ICP-AES), based on the use of citric citrate buffer. In citric 'citrate buffer at pH 3.0, it was possible to inhibit the reduction of As (V), Sb (V) and Se (VI) to AsH3, SbH3 and H2 Se and hence to selectively determine As (III), Sb (III) and Se (IV) . This method allowed detection limits of 0.2 ng As (III) /ml, 0.2 ng Sb (III) /ml and 1.4 ng Se (IV) /ml and quantitative limits of 1 ng As (III) /ml, 1 ng Sb (III) /ml and 4 ng Se (IV) /ml. The calibration curves of As (III) and Sb (III) were liner from 1 to 100 ng/ml, while that of Se (IV) was liner from 4 to 100ng/ml. The method can be applied to determine As (III), Sb (III) and Se (IV) in river water, ground water and soil solution.
日本環境化学会の論文