TASPAP分光光度法测定水中镉(Ⅱ)离子  

Determination of Cadmium Ion by Spectrophotometry with 2-(2-thiazolylazo)-5-sulfopropylaminopHenol(TASPAP)

作　　者：赵云翔[1] 马卫兴[2] 

机构地区：[1]安徽理工大学地球与环境学院,安徽淮南232001 [2]淮海工学院化学工程学院,江苏连云港222004

出　　处：《安徽理工大学学报（自然科学版）》2009年第2期17-19,共3页Journal of Anhui University of Science and Technology:Natural Science

摘　　要：用分光光度法研究了新试剂2-（2-噻唑偶氮）-5-磺丙氨基苯酚（TASPAP）与镉（Ⅱ）的显色反应性能。在pH=8的Clark-Lubs缓冲溶液中,TASPAP与镉（Ⅱ）形成配合物,该配合物的最大吸收峰位于550 nm波长处,镉（Ⅱ）的量在0-60μg范围内符合郎伯-比尔定律,表观摩尔吸光系数为3.30×10^4（L.mol^-1.cm^-1）,灵敏度较高,该方法用于镉离子的测定,结果令人满意。The color reaction of a.new reagent TASPAP with Cadmium was studied. The results showed that the new reagent TASPAP reacts with Cd （ II ） to form a stable complex in the medium of Clark- Lubs at pH 8. The maximum absorption of this complex is at 550nm with an apparent molar absorptivity of 3.30×10^4 （L. mol^-1.cm^-1）. Beer＇s law is obeyed in Cd（ Ⅱ ） concentration of 0 and 60μg. The method was applied to determination of Cadmium ion, which shows satisfactory results.

关 键 词：2-(2-噻唑偶氮)-5-磺丙氨基苯酚 分光光度法 镉离子 

分 类 号：O657.32[理学—分析化学]