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用TMK水相分光光度法测定金已有报导,但是,用的是巯基棉吸附分离法,此法操作手续烦杂,如应用于测定含有大量铜、银、镍、硒等元素的电解铜阳极泥中的金)还存在着一定的问题,为此,本文借助于纸层析法与金属离子分离,然后将金带剪下,在pH4.5条件下,加入TMK及SDBS溶液与Au~(3+)水相显色。此法操作简单,亦无其它离子干扰,回收率在95~104%之间,相对标准偏差为2.00%左右,可应用于电解铜阳极泥中金的测定。 一、分析步骤 准确称取电解铜阳极泥试样0.1000~0.5000g于10ml烧杯中,用少量水润湿后,
The determination of gold by TMK aqueous phase spectrophotometry has been reported, however, with the thiol-cotton adsorption separation method. This procedure is cumbersome, such as the use of electrolytic copper anode slime containing large amounts of copper, silver, nickel, selenium and the like In the gold) there are still some problems, this paper, by means of paper chromatography and metal ions separation, and then cut the gold band, at pH 4.5 conditions, adding TMK and SDBS solution and Au ~ (3 +) Water color. The method is easy to operate and has no interference with other ions. The recovery rate is between 95% and 104%, and the relative standard deviation is about 2.00%. This method can be applied to the determination of gold in electrolytic copper anode slime. First, the analysis steps accurately weighed electrolytic copper anode slime sample 0.1000 ~ 0.5000g in 10ml beaker, moistened with a small amount of water,