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高含量金的测定多采用重量法,手续冗长繁复。我们在前人工作的基础上对莫尔盐还原容量法的某些条件如酸度、莫尔盐还原金所需时间及加入量等,以及各种干扰成分的影响和消除方法进行了考察,制定了高含量金(50—200毫克)的容量分析方法。本法操作简便、快速,准确度满足生产要求。实验部分 (一)试剂金标准液:称纯金(99.99％)5.0000克用王水在水浴上加热溶解,加少许20％氯化钠溶液蒸至近干,加8NHCl数毫升
The determination of high levels of gold using gravimetric method, lengthy and complicated procedures. Based on the work of predecessors, we investigated some conditions of Mohr salt reduction capacity method, such as acidity, time and amount of Mohr salt reduction gold, and the influence and elimination methods of various interference components. High volume gold (50-200 mg) capacity analysis method. This method is simple, fast and accurate to meet the production requirements. Experimental part (a) reagent gold standard solution: Pure gold (99.99%) 5.0000 grams with aqua regia dissolved in water bath, add a little 20% sodium chloride solution to near dry, add 8NHCl a few milliliters