Rh(Ⅲ)在不同介质中的极谱波,已有不少资料。我们发现Rh(Ⅲ)在dl-2,3,5,6-四氢-6苯基咪唑〔2.1b〕噻唑(简称四咪噻唑)和氯化钾水溶液中,在电位为-0.85V(vs SCE,下同)处有一极谱波,对波的性质进行了考察。仪器和试剂:E506型多用极谱仪;883型极谱仪;JP-1A型极谱仪,三电极系统。氯铑酸为光谱纯标样(纯度99.95％),四咪噻唑盐酸盐系市售商品。其他试剂均为分析纯。试验结果:四咪噻唑盐酸盐的氯化钾水溶液,在滴汞电极上于-1.6伏附近有极谱催化波。如果 There are a lot of data about the polarographic wave of Rh (Ⅲ) in different media. We have found that Rh (III) is stable at a potential of -0.85V (vs (dl-2,3,5,6-tetrahydro-6phenylimidazo [ SCE, the same below) has a polarographic wave at the nature of the wave were investigated. Instruments and Reagents: E506 multi-polar spectrometer; 883 polarography; JP-1A polarography, three-electrode system. Chloro-rhodium acid is a pure spectral standard (purity of 99.95%), and tetrathiazole hydrochloride is a commercially available product. Other reagents are of analytical grade. Test Results: Four thiophene hydrochloride aqueous potassium chloride solution, dropping mercury electrode in the vicinity of -1.6 volts polarographic catalytic wave. in case