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Inaudi P, Mondino E, Abollino O, Malandrino M, Argenziano M, Favilli L, Boschini R, Giacomino A. On-Site Determination of Methylmercury by Coupling Solid-Phase Extraction and Voltammetry. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27103178. [PMID: 35630654 PMCID: PMC9147067 DOI: 10.3390/molecules27103178] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/05/2022] [Accepted: 05/14/2022] [Indexed: 11/16/2022]
Abstract
A measurement and speciation procedure for the determination of total mercury (HgTOT), inorganic mercury (HgIN), and methylmercury (CH3Hg) was developed and the applicability for on-site determination was demonstrated. A simple, portable sample pretreatment procedure was optimized to extract the analytes. Home-made columns, packed with a new sorbent material called CYXAD (CYPHOS 101 modified Amberlite XAD), were used to separate the two forms of the analyte. HgTOT and CH3Hg were determined by anodic stripping voltammetry (ASV), using a solid gold electrode (SGE). Two certified reference materials (BCR-463 Tuna Fish and Tuna Fish ERM-CE 464) and eight fresh fishes were analyzed. Then, the results that were obtained following the optimized portable procedure were compared with the concentrations obtained, using a direct mercury analyzer (DMA). This quantification, using the two techniques, demonstrated the good performance of the proposed method.
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Affiliation(s)
- Paolo Inaudi
- Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9, 10125 Turin, Italy; (O.A.); (M.A.); (L.F.)
- Correspondence: (P.I.); (A.G.)
| | - Elio Mondino
- Department of Chemistry, University of Torino, Via Pietro Giuria 7, 10125 Torino, Italy; (E.M.); (M.M.)
| | - Ornella Abollino
- Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9, 10125 Turin, Italy; (O.A.); (M.A.); (L.F.)
| | - Mery Malandrino
- Department of Chemistry, University of Torino, Via Pietro Giuria 7, 10125 Torino, Italy; (E.M.); (M.M.)
| | - Monica Argenziano
- Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9, 10125 Turin, Italy; (O.A.); (M.A.); (L.F.)
| | - Laura Favilli
- Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9, 10125 Turin, Italy; (O.A.); (M.A.); (L.F.)
| | | | - Agnese Giacomino
- Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9, 10125 Turin, Italy; (O.A.); (M.A.); (L.F.)
- Correspondence: (P.I.); (A.G.)
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Giacomino A, Ruo Redda A, Caligiuri R, Inaudi P, Squadrone S, Abete MC, Abollino O, Morandi S, Conca E, Malandrino M. Development of an easy portable procedure for on-site determination of mercury and methylmercury. Food Chem 2020; 342:128347. [PMID: 33071191 DOI: 10.1016/j.foodchem.2020.128347] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/02/2020] [Accepted: 10/07/2020] [Indexed: 11/24/2022]
Abstract
A portable measurement and speciation procedure for inorganic mercury (HgIN) and methylmercury (CH3Hg) was developed. A portable sample pretreatment was optimized to determine total mercury content. A new home-made sorbent (CYXAD, CHYPOS 101 modified Amberlite XAD), was prepared to separate HgIN and CH3Hg. Mercury species were determined using square wave anodic stripping voltammetry (SW-ASV) with a solid gold electrode (SGE) and using a portable potentiostat. A certified reference material, five freeze-dried samples and three fresh samples were analysed with conventional voltammetric analyzer, after dissolution of the samples in microwave oven, and with a portable potentiostat after the mild eating procedure. The results obtained by SW-ASV were compared with those obtained using Direct Mercury Analyser (DMA). The quantification with the portable method is comparable to that obtained with the DMA. Retention tests showed the selectivity of CYXAD for HgIN, its stability and the possibility to re-use the same aliquot of resin.
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Affiliation(s)
- Agnese Giacomino
- Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9, 10125 Turin, Italy.
| | - Andrea Ruo Redda
- Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9, 10125 Turin, Italy.
| | - Rocco Caligiuri
- Department of Chemistry, University of Torino, Via Pietro Giuria 5, 10125 Torino, Italy
| | - Paolo Inaudi
- Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9, 10125 Turin, Italy.
| | - Stefania Squadrone
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta (IZSPLV), 10100 Torino, Italy.
| | - Maria Cesarina Abete
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta (IZSPLV), 10100 Torino, Italy.
| | - Ornella Abollino
- Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9, 10125 Turin, Italy.
| | - Sara Morandi
- Department of Chemistry, University of Torino, Via Pietro Giuria 5, 10125 Torino, Italy.
| | - Eleonora Conca
- Department of Chemistry, University of Torino, Via Pietro Giuria 5, 10125 Torino, Italy.
| | - Mery Malandrino
- Department of Chemistry, University of Torino, Via Pietro Giuria 5, 10125 Torino, Italy.
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Lead, Mercury and Cadmium in Fish and Shellfish from the Indian Ocean and Red Sea (African Countries): Public Health Challenges. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2020. [DOI: 10.3390/jmse8050344] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The main aim of this review was to assess the incidence of Pb, Hg and Cd in seafood from African countries on the Indian and the Red Sea coasts and the level of their monitoring and control, where the direct consumption of seafood without quality control are frequently due to the poverty in many African countries. Some seafood from African Indian and the Red Sea coasts such as mollusks and fishes have presented Cd, Pb and Hg concentrations higher than permitted limit by FAOUN/EU regulations, indicating a possible threat to public health. Thus, the operationalization of the heavy metals (HM) monitoring and control is strongly recommended since these countries have laboratories with minimal conditions for HM analysis.
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Hu P, Wang X, Yang L, Yang H, Tang Y, Luo H, Xiong X, Jiang X, Huang K. Speciation of mercury by hydride generation ultraviolet atomization-atomic fluorescence spectrometry without chromatographic separation. Microchem J 2018. [DOI: 10.1016/j.microc.2018.08.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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5
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Hellmann C, Costa RD, Schmitz OJ. How to Deal with Mercury in Sediments? A Critical Review About Used Methods for the Speciation of Mercury in Sediments. Chromatographia 2018. [DOI: 10.1007/s10337-018-3625-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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6
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Chen Y, Chen L, Wang X, Xi Z, Wu Y, Fu F. DNA binding in combination with capillary electrophoresis and inductively coupled plasma mass spectrometry for the rapid speciation analysis of mercury. SEPARATION SCIENCE PLUS 2018. [DOI: 10.1002/sscp.201700015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yiquan Chen
- Key Laboratory for Analytical Science of Food Safety and Biology of MOE; Fujian Provincial Key Lab of Analysis and Detection for Food Safety; College of Chemistry; Fuzhou University; Fuzhou Fujian China
| | - Lian Chen
- Key Laboratory for Analytical Science of Food Safety and Biology of MOE; Fujian Provincial Key Lab of Analysis and Detection for Food Safety; College of Chemistry; Fuzhou University; Fuzhou Fujian China
| | - Xusheng Wang
- Key Laboratory for Analytical Science of Food Safety and Biology of MOE; Fujian Provincial Key Lab of Analysis and Detection for Food Safety; College of Chemistry; Fuzhou University; Fuzhou Fujian China
| | - Zhiming Xi
- Key Laboratory for Analytical Science of Food Safety and Biology of MOE; Fujian Provincial Key Lab of Analysis and Detection for Food Safety; College of Chemistry; Fuzhou University; Fuzhou Fujian China
| | - Yongning Wu
- China National Center for Food Safety Risk Assessment; Beijing China
| | - FengFu Fu
- Key Laboratory for Analytical Science of Food Safety and Biology of MOE; Fujian Provincial Key Lab of Analysis and Detection for Food Safety; College of Chemistry; Fuzhou University; Fuzhou Fujian China
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Chen Y, Cheng X, Mo F, Huang L, Wu Z, Wu Y, Xu L, Fu F. Ultra-sensitive speciation analysis of mercury by CE-ICP-MS together with field-amplified sample stacking injection and dispersive solid-phase extraction. Electrophoresis 2015; 37:1055-62. [DOI: 10.1002/elps.201500460] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 12/03/2015] [Accepted: 12/03/2015] [Indexed: 11/08/2022]
Affiliation(s)
- YiQuan Chen
- Key Laboratory of Analysis and Detection for Food Safety of Ministry of Education, Fujian Provincial Key Lab of Analysis and Detection for Food Safety; College of Chemistry, Fuzhou University; Fuzhou Fujian P. R. China
| | - Xian Cheng
- Key Laboratory of Analysis and Detection for Food Safety of Ministry of Education, Fujian Provincial Key Lab of Analysis and Detection for Food Safety; College of Chemistry, Fuzhou University; Fuzhou Fujian P. R. China
| | - Fan Mo
- Key Laboratory of Analysis and Detection for Food Safety of Ministry of Education, Fujian Provincial Key Lab of Analysis and Detection for Food Safety; College of Chemistry, Fuzhou University; Fuzhou Fujian P. R. China
| | - LiMei Huang
- Key Laboratory of Analysis and Detection for Food Safety of Ministry of Education, Fujian Provincial Key Lab of Analysis and Detection for Food Safety; College of Chemistry, Fuzhou University; Fuzhou Fujian P. R. China
| | - Zujian Wu
- Department of Plant Protection; Fujian Agriculture and Forest University; Fuzhou Fujian P. R. China
| | - Yongning Wu
- China National Center for Food Safety Risk Assessment; Beijing P. R. China
| | - LiangJun Xu
- Key Laboratory of Analysis and Detection for Food Safety of Ministry of Education, Fujian Provincial Key Lab of Analysis and Detection for Food Safety; College of Chemistry, Fuzhou University; Fuzhou Fujian P. R. China
| | - FengFu Fu
- Key Laboratory of Analysis and Detection for Food Safety of Ministry of Education, Fujian Provincial Key Lab of Analysis and Detection for Food Safety; College of Chemistry, Fuzhou University; Fuzhou Fujian P. R. China
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Chen Y, Huang L, Wu W, Ruan Y, Wu Z, Xue Z, Fu F. Speciation analysis of lead in marine animals by using capillary electrophoresis couple online with inductively coupled plasma mass spectrometry. Electrophoresis 2013; 35:1346-52. [PMID: 24272447 DOI: 10.1002/elps.201300410] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 10/10/2013] [Accepted: 11/19/2013] [Indexed: 11/11/2022]
Abstract
We herein reported a environment-friendly microwave-assisted extraction used to extract trace lead compounds from marine animals and a ultrasensitive method for the analysis of Pb²⁺, trimethyl lead chloride (TML) and triethyl lead chloride (TEL) by using CE-ICP-MS. The extraction method is simple and has a high extracting efficiency. It can be used to completely extract both inorganic lead and organolead in marine animal samples without altering its species. The analytical method has a detection limit as low as 0.012-0.084 ng Pb/mL for Pb²⁺, TML, and TEL, and can be used to determine ultratrace Pb²⁺, TML, and TEL in marine animals directly without any preconcentration. With the help of above methods, we have successfully determined Pb²⁺, TML, and TEL in clam and oyster tissue within 20 min with a RSD (n = 6) < 5% and a recovery of 91-104%. Our results showed that Pb²⁺ was the main species of lead in clam and oyster, and organolead (TML) was only found in oyster. The proposed method provides a realistic approach for the accurate evaluation of lead pollution in seafood.
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Affiliation(s)
- Yiquan Chen
- Key Laboratory of Analysis and Detection for Food Safety of Ministry of Education, Fujian Provincial Key Lab of Analysis and Detection for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian, P. R. China
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9
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Song X, Ye M, Tang X, Wang C. Ionic liquids dispersive liquid-liquid microextraction and HPLC-atomic fluorescence spectrometric determination of mercury species in environmental waters. J Sep Sci 2012; 36:414-20. [DOI: 10.1002/jssc.201200571] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 09/24/2012] [Accepted: 09/26/2012] [Indexed: 11/06/2022]
Affiliation(s)
- Xixi Song
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou; P. R. China
| | - Mingde Ye
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou; P. R. China
| | - Xuejiao Tang
- College of Environmental Science & Engineering; Nankai University; Tianjin; P. R. China
| | - Chengjun Wang
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou; P. R. China
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10
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Scientific Opinion on the risk for public health related to the presence of mercury and methylmercury in food. EFSA J 2012. [DOI: 10.2903/j.efsa.2012.2985] [Citation(s) in RCA: 276] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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11
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Timerbaev AR. Element speciation analysis using capillary electrophoresis: twenty years of development and applications. Chem Rev 2012; 113:778-812. [PMID: 23057472 DOI: 10.1021/cr300199v] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Andrei R Timerbaev
- Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Kosygin Str. 19, 119991 Moscow, Russian Federation.
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12
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Determination and speciation of mercury in environmental and biological samples by analytical atomic spectrometry. Microchem J 2012. [DOI: 10.1016/j.microc.2012.02.001] [Citation(s) in RCA: 194] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Zhao Y, Zheng J, Fang L, Lin Q, Wu Y, Xue Z, Fu F. Speciation analysis of mercury in natural water and fish samples by using capillary electrophoresis–inductively coupled plasma mass spectrometry. Talanta 2012; 89:280-5. [DOI: 10.1016/j.talanta.2011.12.029] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Revised: 12/13/2011] [Accepted: 12/13/2011] [Indexed: 11/29/2022]
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14
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Phase transfer membrane supported liquid–liquid–liquid microextraction combined with large volume sample injection capillary electrophoresis–ultraviolet detection for the speciation of inorganic and organic mercury. J Chromatogr A 2011; 1218:9414-21. [DOI: 10.1016/j.chroma.2011.10.071] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 10/22/2011] [Accepted: 10/25/2011] [Indexed: 11/21/2022]
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15
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Determination of mercury(II) in water samples using dispersive liquid-liquid microextraction and back extraction along with capillary zone electrophoresis. Mikrochim Acta 2011. [DOI: 10.1007/s00604-011-0679-z] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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16
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Arslan Y, Yildirim E, Gholami M, Bakirdere S. Lower limits of detection in speciation analysis by coupling high-performance liquid chromatography and chemical-vapor generation. Trends Analyt Chem 2011. [DOI: 10.1016/j.trac.2010.11.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Capillary electrophoretic separation and post-column electrochemical detection of mercury and methyl mercury and applications to coal samples. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2009.02.100] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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18
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Leopold K, Foulkes M, Worsfold P. Methods for the determination and speciation of mercury in natural waters--a review. Anal Chim Acta 2010; 663:127-38. [PMID: 20206001 DOI: 10.1016/j.aca.2010.01.048] [Citation(s) in RCA: 292] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2009] [Revised: 01/18/2010] [Accepted: 01/20/2010] [Indexed: 10/19/2022]
Abstract
This review summarises current knowledge on Hg species and their distribution in the hydrosphere and gives typical concentration ranges in open ocean, coastal and estuarine waters, as well as in rivers, lakes, rain and ground waters. The importance of reliable methods for the determination of Hg species in natural waters and the analytical challenges associated with them are discussed. Approaches for sample collection and storage, pre-concentration, separation, and detection are critically compared. The review covers well established methods for total mercury determination and identifies new approaches that offer advantages such as ease of use and reduced risk of contamination. Pre-concentration and separation techniques for Hg speciation are divided into chromatographic and non-chromatographic methods. Derivatisation methods and the coupling of pre-concentration and/or separation methods to suitable detection techniques are also discussed. Techniques for sample pre-treatment, pre-concentration, separation, and quantification of Hg species, together with examples of total Hg determination and Hg speciation analysis in different natural (non-spiked) waters are summarised in tables, with a focus on applications from the last decade.
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Affiliation(s)
- Kerstin Leopold
- Analytical Chemistry Group, Department of Chemistry, Technical University of Munich, Lichtenbergstr. 4, 85748 Garching, Germany.
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19
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Timerbaev AR. Inorganic species analysis by CE â An overview for 2007â2008. Electrophoresis 2010; 31:192-204. [DOI: 10.1002/elps.200900397] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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20
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Chen H, Chen J, Jin X, Wei D. Determination of trace mercury species by high performance liquid chromatography-inductively coupled plasma mass spectrometry after cloud point extraction. JOURNAL OF HAZARDOUS MATERIALS 2009; 172:1282-1287. [PMID: 19716653 DOI: 10.1016/j.jhazmat.2009.07.134] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Revised: 07/29/2009] [Accepted: 07/30/2009] [Indexed: 05/28/2023]
Abstract
A sensitive method for speciation analysis of inorganic mercury (Hg(2+)) and methyl mercury (MeHg(+)) has been developed by using high performance liquid chromatography (HPLC) combined with inductively coupled plasma mass spectrometry (ICP-MS) after cloud point extraction. The analytes were complexed with sodium diethyldithiocarbamate (DDTC) and preconcentrated by a non-ionic surfactant Triton X-114. Mercury species were effectively separated by HPLC in less than 6 min. The enhancement factors for 25 mL sample solution were 42 and 21, and the limits of detection were 4 and 10 ng L(-1) for Hg(2+) and MeHg(+), respectively. The developed method was successfully applied to the determination of trace amount of mercury species in environmental and biological samples.
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Affiliation(s)
- Haiting Chen
- Ningbo Entry-Exit Inspection and Quarantine Bureau, Ningbo 315012, China
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21
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Liquid chromatographic analysis of Hg(II) binding by thiol-rich peptides using both UV–vis and electrochemical detection. J Chromatogr A 2009; 1216:6752-7. [DOI: 10.1016/j.chroma.2009.07.071] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2009] [Revised: 07/24/2009] [Accepted: 07/31/2009] [Indexed: 10/20/2022]
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22
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Chekmeneva E, Díaz-Cruz JM, Ariño C, Esteban M. A novel differential pulse voltammetric method on rotating Au-disk electrode for the study of Hg2+ binding. J Electroanal Chem (Lausanne) 2009. [DOI: 10.1016/j.jelechem.2009.02.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Kubánˇ P, Pelcová P, Margetínová J, Kubánˇ V. Mercury speciation by CE: An update. Electrophoresis 2009; 30:92-9. [DOI: 10.1002/elps.200800382] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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24
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Li Y, Liu JM, Xia YL, Jiang Y, Yan XP. CE with on-line detection by ICP-MS for studying the competitive binding of zinc against cadmium for glutathione. Electrophoresis 2008; 29:4568-74. [DOI: 10.1002/elps.200800309] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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25
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Li P, Duan J, Hu B. High-sensitivity capillary electrophoresis for speciation of organomercury in biological samples using hollow fiber-based liquid-liquid-liquid microextraction combined with on-line preconcentration by large-volume sample stacking. Electrophoresis 2008; 29:3081-9. [DOI: 10.1002/elps.200700920] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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26
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Yin XB, Li Y, Yan XP. CE-ICP-MS for studying interactions between metals and biomolecules. Trends Analyt Chem 2008. [DOI: 10.1016/j.trac.2008.04.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Hollenstein M, Hipolito C, Lam C, Dietrich D, Perrin D. A Highly Selective DNAzyme Sensor for Mercuric Ions. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200800960] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Hollenstein M, Hipolito C, Lam C, Dietrich D, Perrin D. A Highly Selective DNAzyme Sensor for Mercuric Ions. Angew Chem Int Ed Engl 2008; 47:4346-50. [DOI: 10.1002/anie.200800960] [Citation(s) in RCA: 289] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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29
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Ma L, Kang J. Determination of mercury ion by MEKC with on-column derivatisation and LIF detection. J Sep Sci 2008; 31:888-92. [DOI: 10.1002/jssc.200700606] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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30
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del Campo O, Carbayo A, Cuevas JV, Muñoz A, García-Herbosa G, Moreno D, Ballesteros E, Basurto S, Gómez T, Torroba T. An organopalladium chromogenic chemodosimeter for the selective naked-eye detection of Hg2+ and MeHg+ in water–ethanol 1 : 1 mixture. Chem Commun (Camb) 2008:4576-8. [DOI: 10.1039/b807670g] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Reviews in the Spotlight: J. Sep. Sci. 16/2007. J Sep Sci 2007. [DOI: 10.1002/jssc.200790063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Nguyen HTA, Kubán P, Pham VH, Hauser PC. Study of the determination of inorganic arsenic species by CE with capacitively coupled contactless conductivity detection. Electrophoresis 2007; 28:3500-6. [PMID: 17768725 DOI: 10.1002/elps.200700069] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The determination of arsenic(III) and arsenic(V), as inorganic arsenite and arsenate, was investigated by CE with capacitively coupled contactless conductivity detection (CE-C(4)D). It was found necessary to determine the two inorganic arsenic species separately employing two different electrolyte systems. Electrolyte solutions consisting of 50 mM CAPS/2 mM L-arginine (Arg) (pH 9.0) and of 45 mM acetic acid (pH 3.2) were used for arsenic(III) and arsenic(V) determinations, respectively. Detection limits of 0.29 and 0.15 microM were achieved for As(III) and As(V), respectively by using large-volume injection to maximize the sensitivity. The analysis of contaminated well water samples from Vietnam is demonstrated.
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Affiliation(s)
- Huong Thi Anh Nguyen
- Centre for Environmental Technology and Sustainable Development, Hanoi University of Science, Hanoi, Vietnam
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Houserová P, Matejícek D, Kubán V. High-performance liquid chromatographic/ion-trap mass spectrometric speciation of aquatic mercury as its pyrrolidinedithiocarbamate complexes. Anal Chim Acta 2007; 596:242-50. [PMID: 17631102 DOI: 10.1016/j.aca.2007.06.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2007] [Revised: 06/06/2007] [Accepted: 06/10/2007] [Indexed: 10/23/2022]
Abstract
Mercury-pyrrolidinedithiocarbamate complexes are first time used for speciation of aquatic mercury with high-performance liquid chromatographic/ion trap-mass spectrometric method utilizing atmospheric pressure chemical ionization (APCI). The separation of the four mercury species was achieved in less than 5 min with a linear gradient profile of aqueous methanol from 70 up to 100% (v/v) in 4th min, isocratic elution at 100% up to 5th min and followed by a negative gradient to 70% in 6th min. The best separation was achieved on a reverse phase Zorbax Eclipse XDB C18 column (50 mm x 2.1 mm i.d., 1.8 microm particle size). The on-column limits of detection (injection volume 1 microL) were 370 pg for methylmercury (MeHg+), 280 pg for ethylmercury (EtHg+), 250 pg for phenylmercury (PhHg+) and 90 pg for inorganic mercury (Hg2+) when the data were collected in selective ion monitoring (SIM) mode. A method of isolation and preconcentration of the mercury species using a "home-made" C18 solid phase extraction (SPE) microcolumns was developed to enhance sensitivity of the method. The preconcentration factor as much as 2500 was achieved with on-column complex formation of mercury-pyrrolidinedithiocarbamate. Methanol (100%) was chosen for elution of preconcentrated mercury species. The method was applied for the determination of mercury species in river water samples.
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Affiliation(s)
- Pavlína Houserová
- Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, Zemedelská 1, Brno, CZ 613 00, Czech Republic
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Kubán P, Houserová P, Kubán P, Hauser PC, Kubán V. Sensitive capillary electrophoretic determination of mercury species with amperometric detection at a copper electrode after cation exchange preconcentration. J Sep Sci 2007; 30:1070-6. [PMID: 17566342 DOI: 10.1002/jssc.200600476] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A capillary electrophoretic method for the separation of four mercury species with amperometric detection was developed. Inorganic Hg2+, methyl-, ethyl-, and phenyl-mercury were complexed with L-cysteine and separated in a counterelectroosmotic mode in an electrolyte solution comprised of 20 mM sodium tetraborate at pH 9.5. Amperometric detection of separated species was achieved at passivated copper electrode under electrocatalytic oxidation conditions. The four mercury species were separated in less than 8 min with LODs ranging from 170 to 450 microg/L. Cation exchange preconcentration was used to decrease the LODs down to 1.7 microg/L.
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Affiliation(s)
- Petr Kubán
- Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, Brno, Czech Republic.
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