期刊
MICROCHIMICA ACTA
卷 157, 期 1-2, 页码 7-11出版社
SPRINGER WIEN
DOI: 10.1007/s00604-006-0649-z
关键词
ion-imprinted polymers (IIPs); solid-phase extraction (SPE); surface imprinting technique; preconcentration; Pd(II); ICP-AES
A novel Pd(II)-imprinted amino-functionalized silica gel sorbent was prepared with the help of a surface-imprinting technique for the preconcentration and separation of Pd( II) prior to its determination by inductively coupled plasma atomic emission spectrometry. Compared to the traditional solid sorbents and non-imprinted polymer particles, the ion-imprinted polymers (IIPs) had a higher adsorption capacity and selectivity for Pd( II). The maximum static adsorption capacity of the imprinted and non-imprinted sorbent for Pd(II) was 26.71 mg g(-1) and 10.13 mg g(-1), respectively. The relative selectivity factor (alpha(r)) of Pd(II)/ Zn( II), Pd( II)= Au( III), Pd( II)= Ru( III), Pd( II)= Rh( III), Pd( II)= Pt( IV), Pd( II)= Ir( III), Pd( II)= Fe( III) and Pd( II)= Zn( II) is 39.0, 60.2, 92.0, 85.0, 50.0, 58.0 and 45.0, respectively. The detection limit ( 3 sigma) of the method is 0.36 mu gL(-1). The relative standard deviation was 3.2% for eight replicate determinations of 10 mu g of Pd2+ in 200mL water sample. The method was validated by analyzing a standard reference material, and the results obtained were in good agreement with the standard values. The method was also applied to the determination of trace palladium in geological samples with satisfactory results.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据