作者
Mehrorang Ghaedi, Farshid Ahmadi, Ardeshir Shokrollahi
发表日期
2007/4/2
期刊
Journal of hazardous materials
卷号
142
期号
1-2
页码范围
272-278
出版商
Elsevier
简介
A sensitive and simple method for the simultaneous preconcentration of nutritionally important minerals in real samples has been reported. The method is based on the formation of metal complexes by 4,6-dihydroxy-2-mercaptopyrimidine (DHMP) loaded on activated carbon. The metals content on the complexes are then eluted using 5mL 2M HNO3 in acetone, which are detected by AAS at resonance line. In this procedure, minerals such as Cu, Ni, Pb and Co could be analyzed in one run by caring out the simultaneous separation and quantification of them. At optimum condition the response are linear over concentration range of 0.04–1.1μgmL−1 for Ni2+ and 0.04–1.0μgmL−1 for Cu2+, Pb2+ and Co2+. The detection limits of each element are expressed as the amount of analytes in ngmL−1 giving a signal to noise ratio of 3 are equal to 3.5, 3.4, 2.9 and 8.4 for Ni2+, Co2+, Cu2+ and Pb2+. The sorption capacity …
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