meso-四(2-氯-4-磺酸苯基)卟啉与镉(Ⅱ)显色反应的研究  

Study on the Colour Reaction of Cadmium with meso-Tetra (2-Cl-4-sulfophenyl)porphyrin

作　　者：王泽云 侯振雨 张玉泉 潘祖亭[2] 

机构地区：[1]河南职业技术师院基础部,新乡453003 [2]武汉大学化学系,430072

出　　处：《河南职业技术师范学院学报》1997年第1期36-38,共3页Journal of Henan Vocation-Technical Teachers College

摘　　要：本文研究了Cd（Ⅱ）与meso－四（2－氯－4－磺酸苯基）卟啉（简称O－Cl－TPPS4）的显色反应，在表面活性剂十六烷基三甲基溴化铵（CTMAB）存在下，配合物的最大吸收波长为442nm，表观摩尔吸光系数为254×105L·mol－1·cm－1，镉浓度在0．5～7μg／25ml范围内符合比尔定律。该方法用于地下水与河水中微量镉的测定，结果满意。This paper described a new colour reaction of cadmium with meso-tetra (2-Cl-4-sulfophenyl)porphyrin in alkaline solution. In the presence of surfactant CTMAB,the apparent molar absorptivity of this system at 442nm was 2. 54 ×105 L· mol-1. cm-1. Beer's law was obeyed in the range of 0. 5～7μg/25ml for cadmium. This method was successfully used for rapid determination of trace cadmium in natural water.

关 键 词：卟啉 分光光度法 镉 显色反应 O-Cl-TPPS4 

分 类 号：O614.242[理学—无机化学]