水素化物発生/誘導結合プラズマ質量分析法によるヒ素, セレン及びアンチモンの同時定量

概要

論文の詳細を見る
The authors have developed an analytical method for arsenic, selenium and antimony in water by using hydride generation (HG) coupled with ICP-MS. The method provides simultaneous analysis with high sensitivity and precision. After samples had been decomposed with perchloric acid and nitric acid, the target metals were pre-reduced with HCl and potassium iodide, and then introduced into HG/ICP-MS. Interference of ^<40>Ar^<35>Cl caused by HCl with measurement of ^<75>As was negligible. ^<72>Ge is a useful internal standard for HG/ICP-MS, because it can correct any drift of the sensitivity of ICP-MS. The instrumental detection limits of the method were as low as 10 ng/l ; these values are one-one hundredth as those of HG/ICP-AES. The overall recoveries of seawater and waste water samples to which the metals were spiked to make 1 μg/l of each were more than 80% ; the relative stadard deviations were less than 10%. Applying the method to seawater, the authors found the three metals to have the same concentration levels as those published.
社団法人日本分析化学会の論文
1997-11-05