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银的定量分析方法甚多。但在溶样方面只有硝、盐酸溶样和氯化铵半溶样两种。前者繁琐,并带入大量干扰元素。后者简单,但对于部分矿样,银不能完全被氯化铵解脱出来。经作者试验,在用氯化铵溶样时加入氯化钠,这样可保持氯化铵溶样的优点,使银能定量测定,并能快速准确。在本法的条件下,显色溶液中铜的最大允许量为2000微
There are many methods of quantitative analysis of silver. But in the sample only nitrate, hydrochloric acid solution and ammonium chloride half-soluble two. The former is cumbersome and brings in a large number of disturbing elements. The latter is simple, but for some ore samples, silver can not be completely freed from ammonium chloride. By the author’s experiment, sodium chloride was added during ammonium chloride digestion to maintain the merits of ammonium chloride digestion, enabling the silver to be determined quantitatively and quickly and accurately. Under the conditions of this Act, the maximum allowable amount of copper in the color developing solution is 2000 micro