打萨宗比色法测定银,前人已作了许多工作,是现在常用方法之一。只是为了分离汞,需经反萃取手续。我们利用“直接比色器”在25毫升比色管中,先测得银、汞消光之和,后以硫氰酸钾除去银,又测得汞之消光。银的消光以减差法求得。这样,测定银时既不分离汞,又可同时完成汞的测定。当银汞在一定比例(2:1或1:2)范围之内,或二者品位均为低含量时,可利用此法进行连续比色测定。 Playing Sassoon colorimetric determination of silver, predecessors have done a lot of work, is now one of the commonly used methods. Just to separate mercury, subject to back-extraction procedures. We use the “direct colorimetric” in 25 ml colorimetric tube, the first measure of silver, mercury extinction sum, after removing silver with potassium thiocyanate, but also measured the extinction of mercury. Extinction of silver by subtraction method. In this way, the determination of silver neither mercury, but also the determination of mercury. When amalgam in a certain ratio (2: 1 or 1: 2) within the range, or both low-grade content, this method can be used for continuous colorimetric determination.