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本文研究了溶样条件、阴阳离子的干扰情况、pH值的影响、二乙氨基二硫代甲酸钠的最佳滴定浓度和稳定性后,拟定了一个不经分离的汞矿及汞生产过程中常量汞的萃取滴定法。试样经(1+1)逆王水溶解,在氨性溶液中,用酒石酸掩蔽铁,Cu~(2+)为指示剂,用二乙氨基二硫代甲酸钠标准液进行四氯化碳层的萃取滴定。为含汞在0.01～99%的试样,提供了准确的分析法。
In this paper, we studied the conditions of sample solution, the interference of anion and cation, the influence of pH value, the optimum titration concentration and stability of sodium diethyldithiocarbamate, and proposed a non-isolated mercury mine and mercury production process constant Mercury extraction titration. The sample was dissolved in aqua regia by (1 + 1). In ammonia solution, iron was masked with tartaric acid and Cu 2+ was used as the indicator. The carbon tetrachloride layer was prepared with sodium diethyldithiocarbamate standard solution Extraction titration. For mercury containing 0.01 ~ 99% of the sample, provides an accurate analysis.