强碱性SO_4^(2-)型阴离子交换树脂吸附分离-分光光度法测定痕量铅  

SO_4^(2-) Type Base Negative Exchange Resin Absorption Separation of Trace Lead and Its Determination by Spectrophotometry

作　　者：刘颖[1] 嘎日迪[1] 柳贇 张慧宇 

机构地区：[1]内蒙古师范大学化学系,呼和浩特010022

出　　处：《广东微量元素科学》1997年第10期63-65,共3页Trace Elements Science

基　　金：内蒙古自然科学基金

摘　　要：提出了离子交换柱上吸附的分离技术，结合水相分光光度法测定痕量铅。实验表明，采用SO^(2-)_4型阴离子交换位吸附铅离子，可以消除基体金属在内的全部阳离子的干扰；测定方法的灵敏度ε为2.3×104L·mol-1·cm－1，铅含量在0～7.2mg·L－1范围内符合Beer定律．方法用于黄河水和碳酸镉样品中痕量铜的测定，结果较满意。A high sensiti,ve and excellently selective method of ion exchange co1umn absorption separation and spectrophotometry determination of lead has been developed. The apparent molar absorption coefficient is 2.3×104 L·mol-1·cm-1. Beer's law is obeyed in therange of 0~7. 2 mg·L-1. The method has been applied to the determination of trace lead inHuanghe river and CdCo3 samples with satisfactory results.

关 键 词：铅 分光光度法 离子交换树脂 测定 

分 类 号：O614.433[理学—无机化学]