水酸化アンモニウム溶液中への水素化物の液体捕集濃縮/誘導結合プラズマ発光分析法による水中のセレンの定量

概要

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Selenium in 500 ml of water sample acidified with 25 ml of l2M HCI was reduced to its hydride by addition of 45ml of 30% sodium tetrahydroborate solution. Volatile hydrogen selenide formed was absorbed into 5 ml of the solution adjusted to pH 11 with NH_4OH. Selenium in the absorbing solution was determined by ICP-AES. Cu, Bi, Ag and As ions interfered with hydride generation of selenium. The recovery of selenium by this method was 93% and the analytical results of river water were in good agreement with those obtained by spectrophotometry. The relative standard deviation was 4.1%. The detection limit was 0.5 μg/1 for 500 ml of water sample.
社団法人日本分析化学会の論文
1990-06-05