期刊
MICROCHIMICA ACTA
卷 176, 期 3-4, 页码 437-443出版社
SPRINGER WIEN
DOI: 10.1007/s00604-011-0738-5
关键词
Nanometer-sized gamma-alumina; Copper; Flame atomic absorption spectrometry; Preconcentration
We report on a sensitive, reliable and relatively fast method for separation, preconcentration and determination of trace quantities of copper(II) ion. It is making use of nanometer-sized gamma-alumina nanoparticles modified with sodium dodecyl sulfate (SDS). The adsorptive potential was assessed via a Langmuir isotherm and the maximal sorption capacity was found to be 138 mg g(-1). The effects of pH values, amount of ligand, flow rate, type of eluting agent, volume of eluent, and the volume of sample were examined. The effects of interfering ions on the recovery of the analyte were also investigated. Copper ion was then determined by flame atomic absorption spectrometry. The relative standard deviation for five replicate determinations (at 50 mu g L-1 of copper) is 3.3%. The detection limit (at 3 s) is 2.5 mu g L-1. This method was validated with a certified reference material of oyster tissue (NIST SRM 1566b) and the results coincided well with the certified values. The procedure was successfully applied to the determination of Cu in water and food samples.
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