摘要
研究了聚乙二醇 2000(PEG 2000)水溶液在硫酸铵存在下分为液-液两相的条件和对硝基偶氮氯膦(CPA pN)与钯(II)反应生成的配合物在该萃取体系两相间的分配行为,实现了钯(II)的定量萃取分离.在此基础上建立了非有机溶剂液-液萃取分光光度法测定微量钯(II)的新方法.该方法的检出限为0.03μg/mL,线性范围为0.09～1.5μg/mL,用于铂钯二次精矿和人工合成样品中微量钯的测定,结果令人满意.
The favorable distribution equilibrium of the complex of Pd(II)-CPA-pN between the two phases of PEG-2000-(NH_4)SO_4-H_2O extraction system was investigated. In this paper,the calibration curve is linear in the range from 0.09～1.5μg/mL and the detection limit is 0.03μg/mL. The method proposed in this paper has been applied to determine microamount of palladium in Pt-Pd refined ore and artificial samples with satisfactory results.
出处
《甘肃联合大学学报（自然科学版）》
2004年第4期38-40,共3页
Journal of Gansu Lianhe University :Natural Sciences
