陰イオン交換樹脂カラムを用いるホワイトメタルの分析法

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A method was described for the determination of antimony, copper, lead and tin in white metal with anion exchange column.　After 0.15g of sample had been dissolved in aqua regia,the obtained solution was treated to remove any nitrogen oxides and made up to 250 ml exactly with 1N HCl solution.　25 ml of the solution was poured into the anion exchange column(Dowex 1-X4, 6.0g), which had been conditioned with 1N HCl solution. Copper and antimony were eluted with 100ml of 1N HCl solution, while lead and tin were retained on the column. The eluate was concentrated to about one-fourth of its original volume in order that its HCl concentration was made 4N. The concentrated solution was poured into the another column(Dowex 1-X4, 8.0g), which had been conditioned with 4N HCl solution. Copper was eluted with 100ml of 4N HCl solution and then antimony was done with 200ml of 4N HCl solution. Lead was eluted with 200ml of 0.6N HCl solution from the column to retain lead and tin Subsequentiy, tin was stripped by elution with 50ml of 3M HNO_3 solution. Antimony was determined following iodometric titration and copper, lead and tin following chelatometric titration procedure. Its application to the determination of antimony, copper, lead and tin in white metal gave results agreeing closely with those by the JIS method and atomic absorption spectrometry. It took about 8 hr. to make an analysis by this method. This method was more rapid than JIS method.
山形大学の論文
1974-02-20

陰イオン交換樹脂カラムを用いるホワイトメタルの分析法

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