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鍍錫及其合金电解液中,日常要进行总锡量的測定,我們曾用重量法[1]于試液中加硫酸,用氨水碱化,使錫成錫酸沉淀,然后过滤、洗滌、灼燒、称重等,手續繁而費时,一般文献,都用碘量法[1][2][3],但使四价錫还原成二价錫的时間仍感太长,而且必須进行隔絕空气的装置手續,不合乎快速的要求。近年来,氨羧絡合剂在分析化学上的应用,由于方法簡便快速,日益广泛地为分析工作者所采用。参閱了文献[4][5],結合碱性鍍錫和鍍錫合金电解液的特点,我們进行了EDTA絡合測定总錫量的試驗和改进,得
Tin and its alloys electrolyte, the daily total amount of tin to be measured, we have used the weight method [1] in the test solution plus sulfuric acid, alkalinized with ammonia, tin stannous acid precipitation, and then filtered, washed, burning Burning, weighing and so on. The procedure is complicated and time-consuming. The general literature uses iodometry [1] [2] [3], but the time for the reduction of tetravalent tin into bivalent tin remains too long, The procedure for isolating air from the device is not fast. In recent years, the application of the ammonia-carboxylaromatics in analytical chemistry has been increasingly adopted by analysts as a simple and rapid method. With reference to the literature [4] [5], combined with the characteristics of alkaline tin plating and tin-plating alloy electrolyte, we carried out the experiment and improvement of the total amount of tin in EDTA complexation measurement.