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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。
The color reaction and analytical application of 7- (1-phenylazo) -8-hydroxyquinoline-5-sulfonic acid with indium were studied in the presence of Triton X-100 at pH 4.5 NaAc-HAc In buffer medium, indium and the title reagent form a yellow complex with a compositional ratio of 1: 3, the maximum absorption wavelength is 440nm, the apparent molar absorptivity is 3.86 × 104L · mol-1 · cm-1, The apparent molar absorptivity of indium was 7.33 × 104 L · mol-1 · cm-1 by bimodal double-wavelength method with a sensitivity of 1.9 times that of the single-wavelength method with a linear range of 0 ~ 0 .6mg / L, the method is used for the determination of indium in zinc sulfide based ceramic pigments and coated glass with satisfactory results.