摘要
研究了７－（１－苯偶氮）－８－羟基喹啉－５－磺酸与铟的显色反应及分析应用，在曲拉通Ｘ－１００存在下，于ｐＨ４．５的ＮａＡｃ－ＨＡｃ缓冲介质中，铟与题示试剂形成组成比为１∶３的黄色配合物，最大吸收波长为４４０ｎｍ，表观摩尔吸光系数为３．８６×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，同时在５５０ｎｍ呈现负峰，用双峰双波长法测定铟的表观摩尔吸光系数为７．３３×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，灵敏度为单波长法的１．９倍，线性范围为０～０．６ｍｇ／Ｌ，该法用于硫硒化锌基陶瓷颜料及镀膜玻璃中铟的测定，结果满意。
highly sensitive color reaction of indium() with 7(1phenylazo)8hydroxyquinoline5sulfonic acid (HPAHQS)in the presence of Triton X100 was studied. In HAcNaAc buffer medium(pH4.5), HPAHQS reacts with Indium to form a yellow complex with the molar absorptivity of 3.86104Lmol-1cm-1 at 440nm,and a negative peak at 550nm. The apparent molar absorptivity(440550nm)is 7.33104Lmol-1cm-1 by dualwavelength measurement, which is approximately two times that by singlewavelength measurement at 440nm.Beer's law is obeyed in the range of 00.6mg/L for indium.The developed method has been used for the determination of indium in sulfselenium zinc ceramic pigment and plating membrane with satisfactory results.
出处
《分析试验室》
CAS
CSCD
1999年第3期61-64,共4页
Chinese Journal of Analysis Laboratory
关键词
铟
双波长
分光光度法
显色剂
HPAHQS
phenylazo)8hydroxyquinoline5sulfonic acid
Indium
Triton X100
dualwavelength Spectrophotometry
