【摘要】 用新试剂４－（５－硝基－２－吡啶偶氮）－间苯二酚（５－ＮＯ２－ＰＡＲ）分光光度法测定了人发中微量锌。络合物的表观摩尔吸光系数为１．１９×１０５Ｌ·ｍｏｌ－１·ｃｍ－１。络合比为Ｚｎ２＋：５－ＮＯ２－ＰＡＲ＝１：２。标准加入的回收率在９６％～１０５％之间。方法用于人发中锌含量的测定，结果令人满意。更多还原

【Abstract】 This paper reports the spectrophotometric determination of zinc in human hair by a new reagent4-(5-nitro-2-pyridylazo)-resorcinol. The apparentmolar absorptivity of the complex is 1. 19×105L·mol-1 .cm-1, and the composition is Zn2+:5-NO2-PAR=1:2. The method has been used to determine thezinc content in human hair. The standard additionalrecoveries are satisfactory.更多还原