指甲和人发中微量锌的光度法测定  

The photometry determination of the micro-amounts Zinc in human hair and mails

作　　者：蒋和平[1] 

机构地区：[1]四川警官高等专科学校,四川泸州646000

出　　处：《四川警官高等专科学校学报》2005年第5期48-49,73,共3页

摘　　要：溴化十六烷基三甲基铵和曲通X—100存在下,锌与2—(3,5—二溴—2—吡淀偶氮)—5—二乙氨基苯酚的显色反应结果表明,在PH7-0～9-5范围内,锌与2—(3,5—二溴—2—吡啶偶氮)—5—二乙氨基苯酚形成1/2稳定配合物,其最大吸收峰位于572nm处,摩尔吸光系数为1-3×105L·mol-1·cm-1。锌含量在0～12-0ug/25ml范围内符合比耳定律。方法用于测定指甲和人发中微量锌,结果满意。The colour reaction of zinc （Ⅱ） with 3,5-diBr-PADAP in ：the presence of CTMAB and Triton X-100 is studied.The complex whith its molar ratio of to 2 is formed in a PH 7.90-9.5 buffer solution.The absorption maxima lies at 572nm with its apparent molar absorptivity of 1.6×10^5L·mol^-1·cm^-1.Beer＇s law is obeyed in the range of 0-12/25ml for zinc （Ⅱ）.The method has been applied to determine microamounts of zinc in human hair arid nails with satisfactory results.

关 键 词：光度法 锌 表面活性剂 

分 类 号：D918.93[政治法律—法学]