摘要
研究用表面活性剂十六烷基三甲基溴化铵(CTMAB)作为增溶剂,双硫腙水相直接分光光度法测定微量镉。在25ml水溶液中含0.1～20μg的Cd^(2+)符合比尔定律,摩尔吸光系数ε_(530)达3.36×10~5l·mol^(-1)·cm^(-1),标准回收率93～104%,该法用于废水和铝材中微量镉的测定,结果令人满意。
This paper studies the method of direct spectrophotometric determination of trace cadmium in an aqueous solution with dithizone and surfactant CTMAB. The method has been proved practical in the determination of trace cadmium in waste water and aluminum.
