论文部分内容阅读
本文根据Ａｕ￣（３＋）、Ｐｄ￣（２＋）易与Ｃｌ￣－形成稳定络阴离子被阴离了交换树脂所吸附的特点，较好地解决了贵金属的富集及与大部贱金属的分离问题，提高了分析的选择性和灵敏度。以硫代米酮（ＴＭＫ）为显色剂，采用迭代目标转换因子分析法解析体系重叠进进行多组份同时测定。该方法将富集、分离和显色结合在一起，操作简便，灵敏度高，选择性好。用本文方法测定Ａｕ、Ｐｄ混合物样品，标准偏差Ａｕ为０．０４５，Ｐｄ为０．０３１。方法检出限Ａｕ为０．００５４μｇ／ｍｌ，Ｐｄ为０．００８３μｇ／ｍｌ，符合痕量元素分析要求，取得较理想的结果。
In this paper, according to Au ~ (3 +), Pd ~ (2+) and Cl ~ - form a stable anion anion exchange resin was adsorbed characteristics, to better solve the enrichment of precious metals and most of the base metal separation Problems, improve the selectivity and sensitivity of the analysis. Using thiomomethamine (TMK) as chromogenic reagent, the system was iterated by iterative target conversion factor analysis to determine the multi-component simultaneous determination. The method combines enrichment, separation and color development, has the advantages of simple operation, high sensitivity and good selectivity. The Au, Pd mixture samples were measured by this method with a standard deviation of Au of 0.045 and Pd of 0.031. The method detection limit Au was 0.0054μg / ml, Pd was 0.0083μg / ml, in line with trace element analysis requirements, and achieved better results.