噻唑偶氮胂酸型试剂与钯的显色反应——显色剂结构与光度分析性能的研究

Chromogenic reaction of thiazolyl azo arsonic acids with palladium and the relationship between the structure and chromogenic properties

设计并合成了11种新显色剂——噻唑偶氮胂酸型化合物。这类试剂可在不同酸度与钯(Ⅱ)配位显色,形成组成为1:1的水溶性配合物。总结了试剂结构与性能之间的关系。

Eleven new compounds of thiazolyl azo arso-nic acid have been synthesized.It is found thatthese compounds are good chromogenic reagentsfor palladium.These reagents react with Pd indifferent acidic media to form water solublechelates with 1:1 molar ratio.The sensitivity andselectivity of these reagents are higher than thosepublished in the literature.The relationship be-tween the structure of these reagents and theirchromogenic properties has been studied.