新显色剂TBDP-B-DAA与镉(Ⅱ)显色反应的研究与应用

被引：7

作者：

刘永文

孟双明

郭永

任世斌

汤秀芳

机构：

[1] 雁北师范学院化学系

来源：

化学研究与应用 | 2002年 / 01期

关键词：

3,3′,5,5′-四溴联苯双(重氮氨基偶氮苯); 镉(Ⅱ); 分光光度法;

D O I：

暂无

中图分类号：

O657.32 [可见和紫外分光光度法];

学科分类号：

摘要：

The color reaction of Cadmium(Ⅱ) with 3,3′,5,5′-TBDP B DAA has been studied.The results show that in Na 2B 4O 7 NaOH buffer medium of pH10～11 and in the presence of Tween 80,Cadmium(Ⅱ) reacts with 3,3′,5,5′-TBDP B DAA to form a purplish red complex with molar ratio of 1∶2.The complex exhibits maximum absorption at 520nm with a molar absorptivity of 1.98×10 5L·mol -1 ·cm -1 .Beer's law can be applicable in the range of 0～25μg/25ml Cd(Ⅱ).The method has been applied to the determination of micro amounts of Cadmium(Ⅱ) in vegetable,rice and other biological samples with satisfactory results.

引用

页码：79 / 80+20 +20

页数：3

共 6 条

[1] 2-吡啶重氮氨基偶氮苯与镉(Ⅱ)的显色反应及其应用 [J].