期刊
WATER AIR AND SOIL POLLUTION
卷 225, 期 9, 页码 -出版社
SPRINGER
DOI: 10.1007/s11270-014-2086-7
关键词
Mercury; On-line system; Solid-phase extraction; Water
An on-line preconcentration system using solid-phase extraction with polytetrafluoroethylene was used for the determination of mercury by cold vapor atomic absorption spectrometry. The system uses electronically controlled valves and operates in two simple steps using sorption and elution. The Hg(II) ammonium pyrrolidinedithiocarbamate complexes are retained in a minicolumn packed with the sorbent. The elution, transportation, and reduction of the analyte ions are promoted by a solution of sodium tetrahydroborate(III). After optimization, the developed method showed the following analytical characteristics: a limit of detection of 0.02 mu g L-1, linearity of 0.07 to 2.00 mu g L-1, enrichment factor of 35, and sampling frequency of 27 h(-1). The accuracy of the method was tested by analyzing the certified reference material BCR-060 Lagarosiphon major (aquatic plant). The proposed method was applied to the determination of mercury in water 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