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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Song, Xixi Ye, Mingde Tang, Xuejiao Wang, Chengjun |
| Description | Author Affiliation: Song X ( College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, P R China.) |
| Abstract | An ionic liquid (IL) based dispersive liquid–liquid microextraction combined with HPLC hydride generation atomic fluorescence spectrometry method for the preconcentration and determination of mercury species in environmental water samples is described. Four mercury species $(MeHg^{+},$ $EtHg^{+},$ $PhHg^{+},$ and $Hg^{2+})$ were complexed with dithionate and the neutral chelates were extracted into IL drops using dispersive liquid–liquid microextraction. Variables affecting the formation and extraction of mercury dithizonates were optimized. The optimum conditions found were as follows: IL-type and amount, 0.05 g of 1-octyl-3-methylimidazolium hexafluorophosphate; dispersive solvents type and amount, 500 μL of acetone; pH, 6; extraction time, 2 min; centrifugation time, 12 min; and no sodium chloride addition. Under the optimized conditions, the detection limits of the analytes were 0.031 μg/L for $Hg^{2+},$ 0.016 μg/L for $MeHg^{+},$ 0.024 μg/L for $EtHg^{+},$ and 0.092 μg/L for $PhHg^{+},$ respectively. The repeatability of the method, expressed as RSD, was between 1.4 and 5.2% (n = 10), and the average recoveries for spiked test were 96.9% for $Hg^{2+},$ 90.9% for $MeHg^{+},$ 90.5% for $EtHg^{+},$ 92.3% for $PhHg^{+},$ respectively. The developed method was successfully applied for the speciation of mercury in environmental water samples. |
| File Format | HTM / HTML |
| ISSN | 16159306 |
| Issue Number | 2 |
| Volume Number | 36 |
| e-ISSN | 16159314 |
| Journal | Journal of Separation Science |
| Language | English |
| Publisher | Wiley-VCH |
| Publisher Date | 2013-01-01 |
| Publisher Place | Germany |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Analytical Discipline Chemistry Chromatography, High Pressure Liquid Methods Liquid Phase Microextraction Mercury Compounds Analysis Isolation & Purification Spectrometry, Fluorescence Water Pollutants, Chemical Ionic Liquids Chemistry Evaluation Studies Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Analytical Chemistry Filtration and Separation |
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