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用苯基萤光酮作显色剂的胶束增溶分光光度法测定锡有较高的灵敏度,并已在钢铁分析中得到应用。由于此法受钼、钨、钛等元素的干扰,因而不适用于一些高合金钢中锡的测定。本文利用锡能生成挥发性氢化物与多种共存元素分离的性质,提出用硼氢化钾使锡还原成气态锡化氢分离出来,被高锰酸钾溶液吸收,然后用苯基萤光酮溴化十六烷基吡啶胶束增溶分光光度法测定的方法。此法简便易行,用于钢铁中微量锡的测定,取得了较好的结果。
Micellar solubilization spectrophotometry for the determination of tin with phenylfluorone as a developer has high sensitivity and has been used in steel analysis. As this method is subject to the interference of molybdenum, tungsten, titanium and other elements, it is not suitable for the determination of tin in some high-alloy steel. In this paper, tin can generate volatile hydride with a variety of coexisting elements of the nature of the separation proposed by the use of potassium borohydride tin to gaseous hydrogenation of hydrogen was isolated from potassium permanganate solution was absorbed, and then with phenyl-fluorone bromide Determination of Cetylpyridine by Micellar Solubilization Spectrophotometry. This method is simple and easy for the determination of trace tin in steel, and achieved good results.