COMPARISON OF MODIFIERS FOR MERCURY SPECIATION IN WATER BY SOLID PHASE EXTRACTION AND HIGH PERFORMANCE LIQUID CHROMATOGRAPHY-ATOMIC FLUORESCENCE SPECTROMETRY
文献类型：期刊论文
| 作者 | Xiong, Xiong1,2; Qi, Xiaoting3; Liu, Jiantong1; Wang, Juan3; Wu, Chenxi1 |
| 刊名 | ANALYTICAL LETTERS
 |
| 出版日期 | 2014 |
| 卷号 | 47期号:14页码:2417-2430 |
| 关键词 | 2-mercaptoethanol Diethyldithiocarbamate High-performance liquid chromatography atomic fluorescence spectrometry HPLC-AFS Mercury species SPE |
| ISSN号 | 0003-2719 |
| 英文摘要 | Diethyldithiocarbamate and 2-mercaptoethanol modifiers were compared for the preconcentration of mercury species in water by C-18 solid phase extraction (SPE). The recovery values of mercury species were determined by high performance liquid chromatography-atomic fluorescence spectrometry. The eluent type, pH, chloride ion concentration, humic acid concentration, and storage time were evaluated to compare the preconcentration efficiency. L-cysteine was employed to elute the mercury compounds. Less eluent was needed for 2-mercaptoethanol modified SPE than for diethyldithiocarbamate modified SPE at an L-cysteine concentration of 0.12%. Diethyldithiocarbamate modified SPE could be used over a wider pH range and higher humic acid concentrations, whereas 2-mercaptoethanol modified SPE was less affected by the chloride concentration. Both modified SPE systems stored mercury species for 5 days, but diethyldithiocarbamate modified SPE could be stored longer. Diethyldithiocarbamate SPE provided limits of detections of 3.5, 2.5, and 4 ng.L-1 and average recoveries of 90.78 +/- 3.37%, 96.79 +/- 5.12%, and 84.88 +/- 5.37% for mercury(II), methylmercury, and ethylmercury, respectively. The relative standard deviation was less 6.5%. For 2-mercaptoethanol modified SPE, the limits of detection were 1.4, 1, and 1.6 ng.L-1 and the recoveries were of 87.66 +/- 8.45%, 86.70 +/- 2.61%, and 91.31 +/- 6.98% for mercury(II), methylmercury, and ethylmercury, respectively, with a relative standard deviation below 9.7%. Water should be characterized for its physical and chemical characteristics before mercury preconcentration to choose the most suitable method. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Analytical |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | GAS-CHROMATOGRAPHY ; MASS SPECTROMETRY ; ABSORPTION-SPECTROMETRY ; DITHIOCARBAMATE RESIN ; METHYL MERCURY ; NATURAL-WATERS ; PRECONCENTRATION ; MICROEXTRACTION ; SAMPLES ; METHYLMERCURY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000340474500011 |
| 公开日期 | 2015-01-20 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/20367]  |
| 专题 | 水生生物研究所_水环境工程研究中心_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Hubei Univ, Coll Chem & Chem Engn, Wuhan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiong, Xiong,Qi, Xiaoting,Liu, Jiantong,et al. COMPARISON OF MODIFIERS FOR MERCURY SPECIATION IN WATER BY SOLID PHASE EXTRACTION AND HIGH PERFORMANCE LIQUID CHROMATOGRAPHY-ATOMIC FLUORESCENCE SPECTROMETRY[J]. ANALYTICAL LETTERS,2014,47(14):2417-2430. |
| APA | Xiong, Xiong,Qi, Xiaoting,Liu, Jiantong,Wang, Juan,&Wu, Chenxi.(2014).COMPARISON OF MODIFIERS FOR MERCURY SPECIATION IN WATER BY SOLID PHASE EXTRACTION AND HIGH PERFORMANCE LIQUID CHROMATOGRAPHY-ATOMIC FLUORESCENCE SPECTROMETRY.ANALYTICAL LETTERS,47(14),2417-2430. |
| MLA | Xiong, Xiong,et al."COMPARISON OF MODIFIERS FOR MERCURY SPECIATION IN WATER BY SOLID PHASE EXTRACTION AND HIGH PERFORMANCE LIQUID CHROMATOGRAPHY-ATOMIC FLUORESCENCE SPECTROMETRY".ANALYTICAL LETTERS 47.14(2014):2417-2430. |
入库方式： OAI收割
来源：水生生物研究所
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