期刊
ANALYTICAL SCIENCES
卷 28, 期 12, 页码 1213-1218出版社
JAPAN SOC ANALYTICAL CHEMISTRY
DOI: 10.2116/analsci.28.1213
关键词
-
资金
- Fundacao de Amparo a Pesquisa do Estado de Minas Gerais (FAPEMIG)
- Conselho Nacional de Pesquisa e Desenvolvimento Tecnologico (CNPq)
- Instituto Nacional de Ciencias e Tecnologias Ana Micas Avancadas (INCTAA)
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
An environmentally safe procedure has been developed for the extraction, separation and determination of metal ions using a monosegmented flow analysis technique that exploits an aqueous two-phase system (ATPS-MSFA). The ATPS-MSFA method was applied for the determination of cobalt, based on the reaction between Co(H) and KSCN, which produces a metallic complex that spontaneously partitions to the top phase of the ATPS composed of poly(ethylene oxide), ammonium sulfate and water. The linear range was 5.00 to 500 mu mol kg(-1) (R = 0.9998; n = 13) with a coefficient of variation equal to 1.14% (n = 7). The method yielded a limit of detection and a limit of quantification of 2.17 and 7.24 mu mol kg(-1), respectively. The ATPS-MSFA method was applied to the determination of cobalt in a nickel-cadmium battery sample and the results were validity with flame atomic absorption spectrometry using addition standard.
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