新显色剂4,4′-二偶氮苯重氮氨基偶氮苯测定水中微量锌的研究  

Determination of Microamount of Zinc(Ⅱ) in Water by New Reagent 1,3-Bis(4-phenylazophenyl)triazene

作　　者：朱玉瑞[1] 江万权[1] 邓长平[2] 金谷[1] 

机构地区：[1]中国科学技术大学应用化学系,合肥230026 [2]中国科学技术大学应用化学系分析专业,91届毕业生合肥230026

出　　处：《分析化学》1992年第11期1309-1312,共4页Chinese Journal of Analytical Chemistry

摘　　要：本文报告在四硼酸钠体系中和Triton X-100存在下,锌与新显色剂4,4′-二偶氮苯重氮氨基偶氮苯有灵敏的显色反应。红色络合物在525nm处摩尔吸光系数为1.63×10~5L·mol^(-1)·cm^(-1),并研究了测定锌的各种条件和40余种共存离子对测定的影响。A sensitive reaction of Zn(Ⅱ) with a new reagent 1, 3-bis(4-phenylazophenyl) triaezne [4,4′-Biazobenzenediazoaminoazobenzene(BBDAB)] in the presence of borax and Triton X-100 is presented. The apparent molar absorptivity of red complex has been measured to be 1.63×10~5 L·mol^(-1)·cm^(-1) at 525nm. The calibration curve is linear over the range of 0～8μg/25ml. The molar ratio of Zn (Ⅱ) to BBDAB in the complex is estimated to be 1: 2. Most metal ions do not interfere. The recommended procedure was applied to the determination of Zn(Ⅱ) in waste water sample with satisfactory results.

关 键 词：锌 分光光度法 水 BBDAB 显色剂 

分 类 号：O661.1[理学—分析化学]