摘要
合成了新试剂１－［（２，３，４－三羟基苯）偶氮］－４－苯甲酸并将其应用于锡青铜中锡的测定。发现该试剂与锡形成的棕红色络合物在４８５ｎｍ处有最大吸收，表观摩尔吸光系数为２．５２×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，并且锡的质量浓度在０～７０μｇ／２５ｍＬ范围内符合比耳定律。大量铜对测定无影响，可不经分离。
The synthesis of 1 [(2,3,4 Trihydroxybenzene)azo] 4 benzoic acid (TKAB) and the spectrophotometric determination of tin have been studied.Beer's law is obeyed in the range of 0～70μg/25mL for tin.Large amount of Cu 2+ can exist and most commonions do not interfere.The method has been used for the direct determination of tin in bronze with satisfactory results.
出处
《分析试验室》
CAS
CSCD
1999年第1期87-89,共3页
Chinese Journal of Analysis Laboratory
关键词
锡
锡青铜
分光光度法
测定
TKAB
trihydroxybenz ene)azo] 4 benzoic acid
Tin
bronze
synthesis
spectrophotometry
