摘要
本文合成了新显色剂2,4-二甲基苯基重氮氨基偶氮苯，研究了该试剂与镉的显色反应．在非离子表面活性剂OP-10存在下，于pH11.5的硼砂一氢氧化钠缓冲溶液中，新试剂与钢生成2：1的稳定的红色配和物，其配合物的最大吸收波长位于530um处，表观摩尔吸光系数为1．29×105L·mol-1·cm-1，镉量在0-10μg／25ml范围内符合比尔定律．用本法测定了标准水样及铝合金标样中的微量钢，获得满意结果．
Synthesis of a new triazene reagent 2,4 - dimethylbenzenediazoaminoazobenzene and itscolor reaction with cadmium have been reported.In the prearee of nonionic OP-10 andat pH 11.5 borax buffer solution,the reagen reats with cadmium to form a stable red complex with amolar ratio of 2:1.The maxium wavelength of the complex Is at 530nm and molar absorptivity isfound to be 1.29×105L.mor-1.cm-1 Beer's law is obeyed in the range of 0-10μg Cd(II) in 25ml ofsolition.The method has been applied to deermination of trace cadminum in standar water sampleand alumium alloy with satisfactory results.
出处
《淮北煤师院学报（自然科学版）》
1997年第3期44-48,共5页
Journal of Huaibei Teachers College(Natural Sciences Edition)
关键词
镉
二甲基
苯基
重氨氨基
偶氨苯
光度法
Cadmium 2,4-dimethylbenzenediazoaminoazobenzene Spectrophotometry waer aluminium alloy
