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COMPARISON OF MODIFIERS FOR MERCURY SPECIATION IN WATER BY SOLID PHASE EXTRACTION AND HIGH PERFORMANCE LIQUID CHROMATOGRAPHY-ATOMIC FLUORESCENCE SPECTROMETRY
Xiong, Xiong1,2; Qi, Xiaoting3; Liu, Jiantong1; Wang, Juan3; Wu, Chenxi1
2014
Source PublicationANALYTICAL LETTERS
ISSN0003-2719
Volume47Issue:14Pages:2417-2430
AbstractDiethyldithiocarbamate 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.
SubtypeArticle
Keyword2-mercaptoethanol Diethyldithiocarbamate High-performance Liquid Chromatography Atomic Fluorescence Spectrometry Hplc-afs Mercury Species Spe
DOI10.1080/00032719.2014.910667
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Analytical
WOS IDWOS:000340474500011
WOS KeywordGAS-CHROMATOGRAPHY ; MASS SPECTROMETRY ; ABSORPTION-SPECTROMETRY ; DITHIOCARBAMATE RESIN ; METHYL MERCURY ; NATURAL-WATERS ; PRECONCENTRATION ; MICROEXTRACTION ; SAMPLES ; METHYLMERCURY
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Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/20367
Collection水环境工程研究中心_期刊论文
Affiliation1.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
Recommended Citation
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.
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