錫化水素-アルゴンー水素フレーム系による錫の原子吸光分析法

概要

論文の詳細を見る
A method for the determination of tin by atomic absorption spectrophotometry utilizing stannane-argon-hydrogen system was studied. Using an arsine generator (Nippon Jarrel-Ash Instruments Arsenic Measurement Unit ASD-1A), stannous chloride was reduced to stannane in an acidic condition with sodium borohydride tablets prepared by molding with kaolin. The amount of sodium borohydride added and the concentration of hydrochloric acid in the reaction mixture were the most important factors to produce stannane quantitatively. The addition of sodium sulfate to the sample was effective to prevent the gas from remaining in the mixture, giving the reproducible values. Though arsenic, antimony, nickel and copper ions interfered with the determination, it was eliminated by the addition of potassium iodide to the sample. The detection limit was 0.1 μg, and water samples fortified at 0.11 ppm of stannous chloride were analyzed at recovery of 95-102%.
公益社団法人日本薬学会の論文
1978-12-31