聚酰胺树脂富集分离-原子吸收法测定地质样品中钯  

Atomic Absorption Spectrophotometric Determination of Palladium after Preconcentration and Separation with Polyamide Resin

作　　者：刘红毅[1] 刘海玲[2] 

机构地区：[1]中国人民武装警察部队黄金第十支队,云南昆明650111 [2]桂林工学院材料系,广西桂林541004

出　　处：《岩矿测试》2002年第3期179-182,共4页Rock and Mineral Analysis

摘　　要：拟定了以聚酰胺树脂为吸附剂在静态和动态操作条件下 ,对微量钯的选择性吸附分离方法。实验表明 ,树脂在 0 .0 0 1～ 2 .0mol/L的HCl介质中 ,对钯的吸附性能很好 ,饱和吸附容量为 1 9.2 2～ 1 2 .88mg/g ,平均吸附率为 98.40 %。吸附到树脂中的钯可用中性 3 0 g/L硫脲溶液 (静态 )和 5 0 g/L硫脲溶液 (动态 )解脱 ,平均解脱率为 96.95 % ,富集倍数可达 1 0 0倍。结合原子吸收光度法 ,可用于矿石中微量钯的富集分离和测定 ,标准加入回收试验 ,回收率为 96.0 %～1 0 3 .0 % ,标样分析结果与推荐值相符。A new method for concentration and separation of trace palladium based on the selective absorption of Pd on polyamide resin was developed. The results show that the resin has high absorption ability for Pd in 0.001 ～2.0 mol/L of HCl solution with a saturated absorption capacity of 19.22～12.88 mg/g and an average absorption rate of 98.40% for Pd. The palladium absorbed on the resin can be eluted out by 30 g/L and 50 g/L of neutral thiourea solutions for stationary and dynamic elution respectively.A average elution rate is 96.95% with an enrichment factor of 100 for Pd. Combined with atomic absorption spectrophotometry, the method has been applied to the determination of trace Pd in standard ores. The recovery for the standard addition test is 96.0%～103.0% and the analytical results are in agreement with certified values.

关 键 词：地质样品 聚酰胺树脂 富集 分离 钯 原子吸收法 

分 类 号：P575.4[天文地球—矿物学] O614.823[天文地球—地质学]