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本文报导了2-(5-溴-2-吡啶偶氮)-5-二甲胺基酚(5-Br-DMPAP)萃取分光度测定微量钯(Ⅰ)。络合物的吸收峰值位于565纳米处,组成为Pd(Ⅰ):5-Br-DMPAP=1:2(摩尔比).络合物在0.1～0.4 M 高氯酸介质中能被氯仿萃取,可稳定四小时:0-14ppm 钯符合比尔定律.该法允许较高含量的干扰离子存在,同时也具有高的灵敏度(摩尔吸收系数ε=6.68×10~4),并成功地应用于镍阳极泥中微量钯的测定.
In this paper, spectrophotometric determination of trace palladium (Ⅰ) with 2- (5-bromo-2-pyridylazo) -5-dimethylaminophenol (5-Br-DMPAP) The complex has an absorption peak at 565 nm with Pd (Ⅰ): 5-Br-DMPAP = 1: 2 (molar ratio) .The complex can be extracted by chloroform in 0.1-0.4 M perchloric acid medium, Stable for four hours: 0-14ppm palladium complies with Beer’s Law This method allows the presence of higher levels of interfering ions with high sensitivity (molar absorptivity ε = 6.68 × 10 -4) and has been successfully applied to nickel anodes Determination of trace palladium in mud.