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在测定钯的光度法中,较常见的显色剂有DDO、HDT及CAS,但其灵敏度均不甚高。本文提出在吐温-80存在下用TMK(4,4′-四甲基二氨基硫代二苯甲酮)作显色剂光度法测定钯,其灵敏度甚高,在pH4～6的范围内,络合物呈水溶性红色;在524nm处,有最大吸收,摩尔吸光系数为2.0×10~5,这是目前测定钯的高灵敏度方法之一,钯浓度在0～12/g/50ml内符合比尔定律,本法在灵敏度、稳定性、重现性等方面均较文献报导的方法有一定特点,方法快速、简捷,除铂、金、银有一定
In the determination of palladium spectrophotometry, the more common developers have DDO, HDT and CAS, but its sensitivity is not very high. In this paper, it is proposed that the spectrophotometric method for the determination of palladium with TMK (4,4’-tetramethyldiaminothiobenzophenone) in the presence of Tween-80 has very high sensitivity and is within the range of pH 4 to 6 , The complex was water-soluble red; at 524nm, the maximum absorption, the molar absorptivity of 2.0 × 10 ~ 5, which is one of the high sensitivity of palladium, palladium concentration of 0 ~ 12 / g / 50ml In line with Bill’s law, this method in the sensitivity, stability, reproducibility and other aspects of the literature reported methods have certain characteristics, the method is fast, simple, in addition to platinum, gold, silver have a certain