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 Publication | ANALYTICAL LETTERS
![]() |
ISSN | 0003-2719 |
Volume | 47Issue:14Pages:2417-2430 |
Abstract | 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. |
Subtype | Article |
Keyword | 2-mercaptoethanol Diethyldithiocarbamate High-performance Liquid Chromatography Atomic Fluorescence Spectrometry Hplc-afs Mercury Species Spe |
DOI | 10.1080/00032719.2014.910667 |
WOS Headings | Science & Technology ; Physical Sciences |
Indexed By | SCI |
Language | 英语 |
WOS Research Area | Chemistry |
WOS Subject | Chemistry, Analytical |
WOS ID | WOS:000340474500011 |
WOS Keyword | GAS-CHROMATOGRAPHY ; MASS SPECTROMETRY ; ABSORPTION-SPECTROMETRY ; DITHIOCARBAMATE RESIN ; METHYL MERCURY ; NATURAL-WATERS ; PRECONCENTRATION ; MICROEXTRACTION ; SAMPLES ; METHYLMERCURY |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.ihb.ac.cn/handle/342005/20367 |
Collection | 水环境工程研究中心_期刊论文 |
Affiliation | 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 |
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. |
Files in This Item: | ||||||
File Name/Size | DocType | Version | Access | License | ||
COMPARISON OF MODIFI(1315KB) | 开放获取 | CC BY-NC-SA | View Application Full Text |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment