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1 引 言 杂环偶氮苯甲酸类试剂是近年来人们研究较多的一类光度试剂,目前已用于镍、钯、铑、钴等金属的测定。但关于这些金属的连续测定报道的较少。本文利用2-(2-噻唑偶氮)-5-二乙氨基苯甲酸(TAEB)与钯、铑显色反应的酸度差异,建立了一种简单、快速、灵敏度高、选择性好的钯、铑同时测定的新方法。
1 Introduction Heterocyclic azobenzoic acid reagents are a type of photometric reagent that has been studied more and more in recent years and are currently used for the determination of metals such as nickel, palladium, rhodium and cobalt. However, few reports on the continuous measurement of these metals have been reported. In this paper, a simple, rapid, high sensitivity and good selectivity palladium was established by the acidity difference of the color reaction of 2- (2-thiazolylazo) -5-diethylaminobenzoic acid (TAEB) with palladium and rhodium. Rhodium simultaneous determination of new methods.