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Chaghazardi M, Kashanian S, Nazari M, Omidfar K, Shariati-Rad M, Joseph Y, Rahimi P. Mercury (II) sensing using a simple turn-on fluorescent graphene oxide based aptasensor in serum and water samples. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 313:124057. [PMID: 38457872 DOI: 10.1016/j.saa.2024.124057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 02/14/2024] [Accepted: 02/18/2024] [Indexed: 03/10/2024]
Abstract
A simple, highly sensitive, and selective fluorometric aptasensing platform based on aptamer and graphene oxide (GO) is proposed for the determination of mercury (II) ion (Hg2+). In the designed assay, two aptamer probes, a carboxy-fluorescein (FAM) labeled aptamer (aptamer A) and its complementary (aptamer B) with partial complement containing several mismatches and GO as the quencher were used. In the absence of Hg2+, both A and B aptamers were adsorbed on the surface of GO by π-π-stacking, leading to fluorescence quenching of FAM due to fluorescence resonance energy transfer (FRET). Upon exposure to Hg2+, the A and B aptamer strands bind Hg2+ and form T-Hg2+-T complexes, leading to the formation of a stable double-stranded aptamer. The double-stranded aptamer is detached from the GO surface, resulting in the recovery of FAM fluorescence. The fluorescence intensity (FI) of the developed sensor was correlated with the Hg2+ concentration under optimized experimental conditions in two wide linear ranges, even in the presence of 10 divalent cations as interferences. The linear ranges were obtained from 200.0 to 900.0 fM and 5.0 to 33.0 pM, a limit of detection (LOD) of 106.0 fM, and a limit of quantification (LOQ) of 321.3 fM. The concentration of Hg2+ was determined in five real samples containing three water and two serum samples, using spiking and standard addition methods and the results were compared with the spiked amounts and atomic absorption (AAS) as standard method respectively, with acceptable recoveries. Furthermore, in the standard addition method, to overcome the effects of matrix influence of real samples in quantitative predictions, the excitation-emission matrix (EEM) data for samples was simultaneously analyzed by multivariate curve resolution with alternating least squares (MCR-ALS) as a second-order standard addition method (SOSAM).
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Affiliation(s)
- Mosayeb Chaghazardi
- Faculty of Chemistry, Razi University, Kermanshah, Iran; Biosensor Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Soheila Kashanian
- Faculty of Chemistry, Sensor and Biosensor Research Center (SBRC) & Nanoscience and Nanotechnology Research Center (NNRC), Razi University, Kermanshah, Iran; Nanobiotechnology Department, Faculty of Innovative Science and Technology, Razi University, Kermanshah, Iran.
| | - Maryam Nazari
- Faculty of Chemistry, Razi University, Kermanshah, Iran
| | - Kobra Omidfar
- Biosensor Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran; Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Masoud Shariati-Rad
- Department of Analytical Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran.
| | - Yvonne Joseph
- Institute of Nanoscale and Biobased Materials, Faculty of Materials Science and Materials Technology, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany; Water Research Center, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany
| | - Parvaneh Rahimi
- Institute of Nanoscale and Biobased Materials, Faculty of Materials Science and Materials Technology, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany; Water Research Center, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany
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Xie F, Yuan Q, Qie Y, Meng Y, Luan F. Capacity, stability and energy requirement of divalent mercury uptake by non-methylating/non-demethylating bacteria. JOURNAL OF HAZARDOUS MATERIALS 2023; 450:131074. [PMID: 36848841 DOI: 10.1016/j.jhazmat.2023.131074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/07/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
Methylmercury (MeHg) uptake by demethylating bacteria and inorganic divalent mercury [Hg(II)] uptake by methylating bacteria have been extensively investigated because uptake is the initial step of the intracellular Hg transformation. However, MeHg and Hg(II) uptake by non-methylating/non-demethylating bacteria is overlooked, which may play an important role in the biogeochemical cycling of mercury concerning their ubiquitous presence in the environment. Here we report that Shewanella oneidensis MR-1, a model strain of non-methylating/non-demethylating bacteria, can take up and immobilize MeHg and Hg(II) rapidly without intracellular transformation. In addition, when taken up into MR-1 cells, the intracellular MeHg and Hg(II) were proved to be hardly exported over time. In contrast, adsorbed mercury on cell surface was observed to be easily desorbed or remobilized. Moreover, inactivated MR-1 cells (starved and CCCP-treated) were still capable of taking up nonnegligible amounts of MeHg and Hg(II) over an extended period in the absence and presence of cysteine, suggesting that active metabolism may be not required for both MeHg and Hg(II) uptake. Our results provide an improved understanding of divalent mercury uptake by non-methylating/non-demethylating bacteria and highlight the possible broader involvement of these bacteria in mercury cycling in natural environments.
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Affiliation(s)
- Fuyu Xie
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Qingke Yuan
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Yukang Qie
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Ying Meng
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China.
| | - Fubo Luan
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
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3
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Zheng Y, Wei L, Duan L, Yang F, Huang G, Xiao T, Wei M, Liang Y, Yang H, Li Z, Wang D. Rapid field testing of mercury pollution by designed fluorescent biosensor and its cells-alginate hydrogel-based paper assay. J Environ Sci (China) 2021; 106:161-170. [PMID: 34210432 DOI: 10.1016/j.jes.2021.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/24/2020] [Accepted: 01/06/2021] [Indexed: 06/13/2023]
Abstract
With increasing industrial activities, mercury has been largely discharged into environment and caused serious environmental problems. The growing level of mercury pollution has become a huge threat to human health due to its significant biotoxicity. Therefore, the simple and fast means for on-site monitoring discharged mercury pollution are highly necessary to protect human beings from its pernicious effects in time. Herein, a "turn off" fluorescent biosensor (mCherry L199C) for sensing Hg2+ was successfully designed based on direct modification of the chromophore environment of fluorescent protein mCherry. For rapid screening and characterization, the designed variant of mCherry (mCherry L199C) was directly expressed on outer-membrane of Escherichia coli cells by cell surface display technique. The fluorescent biosensor was characterized to have favorable response to Hg2+ at micromole level among other metal ions and over a broad pH range. Further, the cells of the fluorescent biosensor were encapsulated in alginate hydrogel to develop the cells-alginate hydrogel-based paper. The cells-alginate hydrogel-based paper could detect mercury pollution in 5 min with simple operation process and inexpensive equipment, and it could keep fluorescence and activity stable at 4 °C for 24 hr, which would be a high-throughput screening tool in preliminarily reporting the presence of mercury pollution in natural setting.
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Affiliation(s)
- Yanan Zheng
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Liudan Wei
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Linwei Duan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‑Bioresources, Guangxi University, Nanning 530004, China
| | - Fangfang Yang
- Guangxi-ASEAN Food Inspection and Testing Center, China
| | - Guixiang Huang
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Tianyi Xiao
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Min Wei
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Yanling Liang
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Huiting Yang
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Zhipeng Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‑Bioresources, Guangxi University, Nanning 530004, China.
| | - Dan Wang
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China.
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Zhang Z, Wang WX, Zheng N, Cao Y, Xiao H, Zhu R, Guan H, Xiao H. Methylmercury biomagnification in aquatic food webs of Poyang Lake, China: Insights from amino acid signatures. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:123700. [PMID: 33045461 DOI: 10.1016/j.jhazmat.2020.123700] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/16/2020] [Accepted: 08/08/2020] [Indexed: 06/11/2023]
Abstract
As the dominant mercury species in fish, methylmercury (MeHg) biomagnifies during its trophic transfer through aquatic food webs. MeHg is known to bind to cysteine, forming the complex of MeHg-cysteine. However, relationship between MeHg and cysteine in large-scale food webs has not been explored and contrasted with MeHg biomagnification models. Here, we quantified the compound-specific nitrogen isotopic analysis of amino acids (CSIA-AA), MeHg, and amino acid composition in aquatic organisms of Poyang Lake, the largest freshwater lake in China. The trophic positions (TPAA) of organisms ranged from 1.0 ± 0.1-3.7 ± 0.2 based on CSIA-AA approach. The trophic magnification factor (TMF) of MeHg, derived from the regression slope of Log-transformed MeHg in organisms upon their TPAA for the entire food web was 9.5 ± 0.5. Significantly positive regression between MeHg and cysteine (R2 = 0.64, p < 0.01) was documented, suggesting MeHg-cysteine complex may potentially play a critical role in the bioaccumulation of MeHg. Furthermore, TMFs of MeHg calculated with and without cysteine normalization compared well (7.7-8.7) when excluding primary producers. Our results implied that MeHg may biomagnify as the complex of MeHg-cysteine and contribute to our understanding of MeHg trophic transfer at the molecular level.
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Affiliation(s)
- Zhongyi Zhang
- Jiangxi Province Key Laboratory of the Causes and Control of Atmospheric Pollution, East China University of Technology, Nanchang, 330013, China
| | - Wen-Xiong Wang
- Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China; School of Energy and Environment, State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Nengjian Zheng
- Jiangxi Province Key Laboratory of the Causes and Control of Atmospheric Pollution, East China University of Technology, Nanchang, 330013, China
| | - Yansheng Cao
- Jiangxi Province Key Laboratory of the Causes and Control of Atmospheric Pollution, East China University of Technology, Nanchang, 330013, China
| | - Hongwei Xiao
- Jiangxi Province Key Laboratory of the Causes and Control of Atmospheric Pollution, East China University of Technology, Nanchang, 330013, China
| | - Renguo Zhu
- Jiangxi Province Key Laboratory of the Causes and Control of Atmospheric Pollution, East China University of Technology, Nanchang, 330013, China
| | - Hui Guan
- The State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
| | - Huayun Xiao
- Jiangxi Province Key Laboratory of the Causes and Control of Atmospheric Pollution, East China University of Technology, Nanchang, 330013, China.
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Zhang T, Lou X, Xu L, He S. Elemental mercury sensing by synchronously sweeping two multimode diode lasers. APPLIED OPTICS 2020; 59:3360-3368. [PMID: 32400446 DOI: 10.1364/ao.386105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 02/28/2020] [Indexed: 06/11/2023]
Abstract
We propose a sum-frequency-generation (SFG) laser-based elemental mercury sensing method by mixing two low-cost multimode diode lasers (MDLs). The wavelengths of the two MDLs are synchronously scanned, which enlarges the whole coverage range of wavelength and improves the measurement stability. Correlation spectroscopy was used to eliminate the impact of environmental change and enhance and trace the absorption signal of the sample accurately. A novel data processing method was employed to extract the weak absorption signals from the background efficiently. A sensitivity of ${0.1}\;\unicode{x00B5} {{\rm g/m}^3}$0.1µg/m3 (11 ppt) was achieved for 1-m path length and 10-s integration time. The sensing range was efficiently increased up to ${200}\;\unicode{x00B5} {{\rm g/m}^3}$200µg/m3 using a calibration curve based on a new mathematical analytical formula. Real-time monitoring of the mercury volatilization and diffusion process was experimentally demonstrated with a time resolution of 10 s. The performance of the system shows great practical value for the detection of elemental mercury in industrial applications.
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Ma F, Chen Y, Zhu Y, Liu J. Electrogenerated chemiluminescence biosensor for detection of mercury (II) ion via target-triggered manipulation of DNA three-way junctions. Talanta 2018; 194:114-118. [PMID: 30609509 DOI: 10.1016/j.talanta.2018.10.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 09/28/2018] [Accepted: 10/07/2018] [Indexed: 01/03/2023]
Abstract
A new electrogenerated chemiluminescence (ECL) biosensor is fabricated for the determination of mental ion incorporating DNA three-way junction structure (DNA-TWJ). As a model system, Hg2+ was chosen as an analyte. The ECL biosensor was fabricated by covalently coupling Hg2+ special DNA-TWJ tagged with ruthenium (II) complex (Ru) (named TW/Ru-J1) to the surface of glassy carbon electrode that had been covalently modified with 4-aminobenzoic acid via electrochemical oxidations. Upon binding of Hg2+ to the TW/Ru-J1, the confirmation of TW/Ru-J1 changed and induced Ru away from surface of electrode and thus led to a low ECL signal. The signal linearly decreases with the concentration of Hg2+ in the range from 0.1 pM to 10 pM with a detection limit of 0.04 pM This study could be easily extended to various analytical platforms for the detection of many kinds of analytes or their interactions such as DNA/RNA, DNAzyme/target, aptamer/target, and antibody/antigen.
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Affiliation(s)
- Fen Ma
- Synthetic and Natural Functional Molecule Chemistry of Ministry of Education Key Laboratory, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710127, PR China.
| | - Yu Chen
- Synthetic and Natural Functional Molecule Chemistry of Ministry of Education Key Laboratory, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710127, PR China
| | - Yinchang Zhu
- Synthetic and Natural Functional Molecule Chemistry of Ministry of Education Key Laboratory, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710127, PR China
| | - Jiawei Liu
- Synthetic and Natural Functional Molecule Chemistry of Ministry of Education Key Laboratory, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi 710127, PR China
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A catalytic cleavage strategy for fluorometric determination of Hg(II) based on the use of a Mg(II)-dependent split DNAzyme and hairpins conjugated to gold nanoparticles. Mikrochim Acta 2018; 185:457. [PMID: 30218159 DOI: 10.1007/s00604-018-2990-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 09/01/2018] [Indexed: 10/28/2022]
Abstract
A catalytic cleavage strategy was developed for the fluorometric determination of Hg(II). The method is based on the use of a Mg(II)-dependent split DNAzyme. Fluorophore labeled hairpins were conjugated to gold nanoparticles (AuNPs) upon which fluorescence is quenched. Thymine-Hg(II)-thymine (T-Hg(II)-T) interaction causes the two DNA sequences to form an entire enzyme-strand DNA (E-DNA). The E-DNA bind to the hairpins on the AuNPs to form a Mg(II)-dependent DNAzyme structure. The circular cleavage of hairpins results in a signal amplification and in the recovery of fluorescence. The assay has a limit of detection (LOD) as low as 80 pM of Hg(II). This LOD is comparable to those obtained with other amplification strategies. The method was successfully applied to the determination of Hg(II) in Chinese herbs (Atractylodes macrocephala Koidz). Graphical abstract Schematic of a catalytic cleavage strategy based on Mg(II)-dependent split DNAzyme for fluorometric determination of Hg(II).
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Zhang Y, Miró M, Kolev SD. A novel on-line organic mercury digestion method combined with atomic fluorescence spectrometry for automatic mercury speciation. Talanta 2018; 189:220-224. [PMID: 30086909 DOI: 10.1016/j.talanta.2018.06.083] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Accepted: 06/26/2018] [Indexed: 11/30/2022]
Abstract
A novel on-line digestion method was developed based on organic mercury (Org-Hg) oxidation at ambient temperature using potassium permanganate in the presence of sulphide. The digestion of Org-Hg was instantaneous and quantitative. Consequently, a simple mercury speciation method was developed to differentiate inorganic mercury (In-Hg) and Org-Hg in water samples with a sequential injection analytical system in conjunction with atomic fluorescence spectrometric detection by using Hg2+ as the sole standard for calibration. In-Hg was determined after acidification and decomposition of the organic matter in the sample matrix with KMnO4, while total mercury (T-Hg) was determined after online Org-Hg digestion, and Org-Hg was calculated as the difference between T-Hg and In-Hg. The operational parameters were optimized and the possible role that sulphide played in the digestion of Org-Hg was discussed. A detection limit (3σ criterion) of 3 ng L-1 Hg was achieved, which is far below the guideline value of Hg in drinking water set by WHO, viz., 1 μg L-1. The method was applied to the analysis of lake water samples for the determination of In-Hg and Org-Hg. Relative recoveries of 94-97% for In-Hg and 93.5-94.5% for T-Hg with relative standard deviations of 1.1-3.1% were obtained in real samples spiked with 100 ng L-1 Hg2+ and 100 ng L-1 Org-Hg, respectively, indicating the feasibility of the automatic method for the determination of Hg species at the low ng L-1 level.
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Affiliation(s)
- Yanlin Zhang
- Centre for Aquatic Pollution Identification and Management (CAPIM), School of Chemistry, The University of Melbourne, Victoria 3010, Australia
| | - Manuel Miró
- FI-TRACE group, Department of Chemistry, Faculty of Science, University of the Balearic Islands, Carretera de Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain.
| | - Spas D Kolev
- Centre for Aquatic Pollution Identification and Management (CAPIM), School of Chemistry, The University of Melbourne, Victoria 3010, Australia.
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Li J, Liu J, Lu W, Gao F, Wang L, Ma J, Liu H, Liao C, Chen L. Speciation analysis of mercury by dispersive solid-phase extraction coupled with capillary electrophoresis. Electrophoresis 2018; 39:1763-1770. [PMID: 29683516 DOI: 10.1002/elps.201800024] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 04/01/2018] [Accepted: 04/16/2018] [Indexed: 01/21/2023]
Abstract
A pretreatment method of dispersive solid-phase extraction (DSPE) along with back-extraction followed by CE-UV detector was developed for the determination of mercury species in water samples. Sulfhydryl-functionalized SiO2 microspheres (SiO2 -SH) were synthesized and used as DSPE adsorbents for selective extraction and enrichment of three organic mercury species namely ethylmercury (EtHg), methylmercury (MeHg), and phenylmercury (PhHg), along with L-cysteine (L-cys) containing hydrochloric acid as back-extraction solvent. Several main extraction parameters were systematically investigated including sample pH, amount of adsorbent, extraction and back-extraction time, volume of eluent, and concentration of hydrochloric acid. Under optimal conditions, good linearity was achieved with correlation coefficients over 0.9990, in the range of 4-200 μg/L for EtHg, and 2-200 μg/L for MeHg and PhHg. The LODs were obtained of 1.07, 0.34, and 0.24 μg/L for EtHg, MeHg, and PhHg, respectively, as well as the LOQs were 3.57, 1.13, and 0.79 μg/L, respectively, with enrichment factors ranging from 109 to 184. Recoveries were attained with tap and lake water samples in a range of 62.3-107.2%, with relative standard deviations of 3.5-10.1%. The results proved that the method of SiO2 -SH based DSPE coupled with CE-UV was a simple, rapid, cost-effective, and eco-friendly alternative for the determination of mercury species in water samples.
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Affiliation(s)
- Jinhua Li
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, P. R. China
| | - Junying Liu
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, P. R. China
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China
| | - Wenhui Lu
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, P. R. China
| | - Fangfang Gao
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, P. R. China
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China
| | - Liyan Wang
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, P. R. China
| | - Jiping Ma
- School of Environmental and Municipal Engineering, Qingdao Technological University, Qingdao, P. R. China
| | - Huitao Liu
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China
| | - Chunyang Liao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, P. R. China
| | - Lingxin Chen
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, P. R. China
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China
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A sensitive biosensor for mercury ions detection based on hairpin hindrance by thymine-Hg(II)-thymine structure. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.02.050] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Ion-pairing reversed-phase chromatography coupled to inductively coupled plasma mass spectrometry as a tool to determine mercurial species in freshwater fish. J Chromatogr A 2018; 1531:104-111. [DOI: 10.1016/j.chroma.2017.11.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 10/17/2017] [Accepted: 11/14/2017] [Indexed: 12/21/2022]
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12
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Alizadeh T, Hamidi N, Ganjali MR, Rafiei F. Determination of subnanomolar levels of mercury (II) by using a graphite paste electrode modified with MWCNTs and Hg(II)-imprinted polymer nanoparticles. Mikrochim Acta 2017; 185:16. [PMID: 29594531 DOI: 10.1007/s00604-017-2534-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 11/09/2017] [Indexed: 11/30/2022]
Abstract
Mercury ion-imprinted polymer nanoparticles (Hg-IP-NPs) were synthesized via precipitation polymerization by using itaconic acid as a functional monomer. A carbon paste electrode was impregnated with the synthesized Hg-IP-NPs and MWCNTs to obtain a highly sensitive and selective electrode for determination of Hg(II). Mercury ion is first accumulated on the electrode surface via an open circuit procedure. After reduction of Hg(II) ions to its metallic form at a negative pre-potential, square wave anodic stripping voltammetry was applied to generate the electrochemical signal. The high affinity of the Hg-IP-NPs for Hg(II) was substantiated by comparing of the signals of electrodes with imprinted and non-imprinted polymer. The beneficial effect of MWCNTs on the voltammetric signal is also demonstrated. Under the optimized conditions and at a typical working potential of +0.05 V (vs. Ag/AgCl), the electrode has a linear response in the 0.1-20 nmol L-1 Hg(II) concentration range and a 29 pM detection limit. The electrochemical sensitivity is as high as 1441 A·M-1·cm-2 which is among the best values known. The electrode was applied to the determination of Hg(II) in water samples. Graphical abstract Schematic representation of the sensor electrode modified with mercury-imprinted polymer nanoparticles, and the recognition and voltammetric determination steps.
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Affiliation(s)
- Taher Alizadeh
- Department of Analytical Chemistry, Faculty of Chemistry, University College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran.
| | - Negin Hamidi
- Department of Analytical Chemistry, Faculty of Chemistry, University College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran
| | - Mohamad Reza Ganjali
- Department of Analytical Chemistry, Faculty of Chemistry, University College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran.,Biosensor Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Faride Rafiei
- Department of Analytical Chemistry, Faculty of Chemistry, University College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran
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Voltammetric determination of mercury(II) using a modified pencil graphite electrode with 4-(4-methylphenyl aminoisonitrosoacetyl)biphenyl. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2017. [DOI: 10.1007/s13738-017-1105-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Huang YL, Gao ZF, Jia J, Luo HQ, Li NB. A label-free electrochemical sensor for detection of mercury(II) ions based on the direct growth of guanine nanowire. JOURNAL OF HAZARDOUS MATERIALS 2016; 308:173-178. [PMID: 26835893 DOI: 10.1016/j.jhazmat.2016.01.048] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 01/11/2016] [Accepted: 01/19/2016] [Indexed: 06/05/2023]
Abstract
A simple, sensitive and label-free electrochemical sensor is developed for detection of Hg(2+) based on the strong and stable T-Hg(2+)-T mismatches. In the presence of Mg(2+), the parallel G-quadruplex structures could be specifically recognized and precipitated in parallel conformation. Therefore, the guanine nanowire was generated on the electrode surface, triggering the electrochemical H2O2-mediated oxidation of 3,3',5,5'-tetramethylbenzidine (TMB). In this research, a new method of signal amplification for the quantitative detection of Hg(2+) was described based on the direct growth of guanine nanowire via guanine nanowire. Under optimum conditions, Hg(2+) was detected in the range of 100 pM-100 nM, and the detection limit is 33 pM. Compared to the traditional single G-quadruplex label unit, this electrochemical sensor showed high sensitivity and selectivity for detecting Hg(2+).
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Affiliation(s)
- Yan Li Huang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Zhong Feng Gao
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Jing Jia
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Hong Qun Luo
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Nian Bing Li
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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15
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A highly selective voltammetric sensor for nanomolar detection of mercury ions using a carbon ionic liquid paste electrode impregnated with novel ion imprinted polymeric nanobeads. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 48:205-12. [DOI: 10.1016/j.msec.2014.12.005] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 11/10/2014] [Accepted: 12/03/2014] [Indexed: 11/21/2022]
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16
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Campanella B, Bramanti E. Detection of proteins by hyphenated techniques with endogenous metal tags and metal chemical labelling. Analyst 2014; 139:4124-53. [DOI: 10.1039/c4an00722k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The absolute and relative quantitation of proteins plays a fundamental role in modern proteomics, as it is the key to understand still unresolved biological questions in medical and pharmaceutical applications.
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Affiliation(s)
- Beatrice Campanella
- National Research Council of Italy
- C.N.R
- Istituto di Chimica dei Composti Organo Metallici-ICCOM-UOS Pisa
- 56124 Pisa, Italy
| | - Emilia Bramanti
- National Research Council of Italy
- C.N.R
- Istituto di Chimica dei Composti Organo Metallici-ICCOM-UOS Pisa
- 56124 Pisa, Italy
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17
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Campanella B, Rivera JG, Ferrari C, Biagi S, Onor M, D’Ulivo A, Bramanti E. Microwave Photochemical Reactor for the Online Oxidative Decomposition of p-Hydroxymercurybenzoate (pHMB)-Tagged Proteins and Their Determination by Cold Vapor Generation-Atomic Fluorescence Detection. Anal Chem 2013; 85:12152-7. [DOI: 10.1021/ac403389z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Beatrice Campanella
- National Research Council of Italy, C.N.R., Istituto di Chimica
dei Composti Organo Metallici − ICCOM − UOS Pisa, Area di Ricerca, Via G. Moruzzi 1, 56124 Pisa, Italy
| | - Jose González Rivera
- Chemical
Engineering Department, University of Guanajuato, Noria Alta s/n 36050 Guanajuato, Gto. , Mexico
| | - Carlo Ferrari
- National Research Council of Italy, C.N.R., Istituto Nazionale
di Ottica, INO − UOS Pisa, Area
di Ricerca, Via G. Moruzzi 1, 56124 Pisa, Italy
| | - Simona Biagi
- National Research Council of Italy, C.N.R., Istituto di Chimica
dei Composti Organo Metallici − ICCOM − UOS Pisa, Area di Ricerca, Via G. Moruzzi 1, 56124 Pisa, Italy
| | - Massimo Onor
- National Research Council of Italy, C.N.R., Istituto di Chimica
dei Composti Organo Metallici − ICCOM − UOS Pisa, Area di Ricerca, Via G. Moruzzi 1, 56124 Pisa, Italy
| | - Alessandro D’Ulivo
- National Research Council of Italy, C.N.R., Istituto di Chimica
dei Composti Organo Metallici − ICCOM − UOS Pisa, Area di Ricerca, Via G. Moruzzi 1, 56124 Pisa, Italy
| | - Emilia Bramanti
- National Research Council of Italy, C.N.R., Istituto di Chimica
dei Composti Organo Metallici − ICCOM − UOS Pisa, Area di Ricerca, Via G. Moruzzi 1, 56124 Pisa, Italy
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18
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Determination of mercurial species in fish by inductively coupled plasma mass spectrometry with anion exchange chromatographic separation. Anal Chim Acta 2013; 796:7-13. [DOI: 10.1016/j.aca.2013.08.017] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2013] [Revised: 08/04/2013] [Accepted: 08/08/2013] [Indexed: 11/17/2022]
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19
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Kodamatani H, Matsuyama A, Saito K, Kono Y, Kanzaki R, Tomiyasu T. Sensitive determination method for mercury ion, methyl-, ethyl-, and phenyl-mercury in water and biological samples using high-performance liquid chromatography with chemiluminescence detection. ANAL SCI 2013; 28:959-65. [PMID: 23059991 DOI: 10.2116/analsci.28.959] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A sensitive determination method for mercury speciation analysis was developed. Four mercury species, mercury ion, methylmercury, ethylmercury, and phenylmercury, were complexed with emetine-dithiocarbamate (emetine-CS(2)), and then injected onto a HPLC instrument coupled with a tris(2,2'-bipyridine)ruthenium(III) chemiluminescence detection system. The emetine-CS(2) complexing agent was effectively used to measure the concentration in addition to serving as a separation and detection reagent. The calibration curves for these mercury complexes were linear in the range of 0.050 - 10 μg L(-1) (as Hg). The limit of detection for (emetine-CS(2))(2)Hg, emetine-CS(2)-methylmercury, emetine-CS(2)-ethylmercury, and emetine-CS(2)-phenylmercury were 30, 17, 21, and 22 ng L(-1), respectively. The sensitivity of this method enables the determination of mercury species in water samples at sub-ppb levels. Furthermore, the method was applied to biological samples in combination with acid leaching and liquid-liquid extraction using emetine-CS(2) as an extraction reagent. The determination results were in good agreement with the values of the certified reference materials.
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Affiliation(s)
- Hitoshi Kodamatani
- Division of Earth and Environmental Sciences, Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890–0065, Japan
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20
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Ai X, Wang Y, Hou X, Yang L, Zheng C, Wu L. Advanced oxidation using Fe3O4 magnetic nanoparticles and its application in mercury speciation analysis by high performance liquid chromatography-cold vapor generation atomic fluorescence spectrometry. Analyst 2013; 138:3494-501. [DOI: 10.1039/c3an00010a] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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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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22
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Research progress of heavy metal pollution in China: Sources, analytical methods, status, and toxicity. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s11434-012-5541-0] [Citation(s) in RCA: 132] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Guzmán-Mar J, Hinojosa-Reyes L, Serra A, Hernández-Ramírez A, Cerdà V. Applicability of multisyringe chromatography coupled to cold-vapor atomic fluorescence spectrometry for mercury speciation analysis. Anal Chim Acta 2011; 708:11-8. [DOI: 10.1016/j.aca.2011.09.037] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2011] [Revised: 09/12/2011] [Accepted: 09/29/2011] [Indexed: 10/16/2022]
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24
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Yang R, Jing C, Zhang Q, Wang Z, Wang Y, Li Y, Jiang G. Polybrominated diphenyl ethers (PBDEs) and mercury in fish from lakes of the Tibetan Plateau. CHEMOSPHERE 2011; 83:862-867. [PMID: 21429553 DOI: 10.1016/j.chemosphere.2011.02.060] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2010] [Revised: 01/29/2011] [Accepted: 02/27/2011] [Indexed: 05/30/2023]
Abstract
High mountains may act as cold traps for globally transported persistent organic pollutants (POPs) and mercury (Hg). In the present study, 60 fish samples were collected from eight alpine lakes across the Tibetan Plateau. Concentrations of polybrominated diphenyl ethers (PBDEs), total mercury (HgT) and methyl mercury (MeHg) were quantified in the fish muscle tissues to improve the understanding of pollution status and factors regulating the transport and fate of these contaminants on the Plateau. The results showed that lake-averaged ∑(14)PBDEs concentration was between 0.09 ng g(-1) dw and 4.32 ng g(-1) dw, which was lower than those reported for European mountains. The total mercury concentration in individual fish ranged from 243 to 2384 ng g(-1) dw, and that of MeHg from 131 to 1,610 ng g(-1) dw, which is much higher than those reported in other mountain fish. The spatial variation of PBDEs and mercury in the Plateau is largely controlled by the specific meteorological patterns.
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Affiliation(s)
- Ruiqiang Yang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
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25
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GAO E, LIU J. Rapid Determination of Mercury Species in Sewage Sludge by High-Performance Liquid Chromatography On-line Coupled with Cold-Vapor Atomic-Fluorescence Spectrometry after Ultrasound-assisted Extraction. ANAL SCI 2011; 27:637-41. [DOI: 10.2116/analsci.27.637] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Erle GAO
- College of Environmental Science and Engineering, Donghua University
| | - Jianshe LIU
- College of Environmental Science and Engineering, Donghua University
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26
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Angeli V, Ferrari C, Longo I, Onor M, D’Ulivo A, Bramanti E. Microwave-Assisted Photochemical Reactor for the Online Oxidative Decomposition and Determination of p-Hydroxymercurybenzoate and Its Thiolic Complexes by Cold Vapor Generation Atomic Fluorescence Detection. Anal Chem 2010; 83:338-43. [DOI: 10.1021/ac102462x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Valeria Angeli
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti OrganoMetallici, Area di Ricerca, Via G. Moruzzi 1 56124 Pisa, Italy, and Italian National Research Council-INO-UOS PISA, Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica, Area di Ricerca, Via G. Moruzzi 1, 56124 Pisa, Italy
| | - Carlo Ferrari
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti OrganoMetallici, Area di Ricerca, Via G. Moruzzi 1 56124 Pisa, Italy, and Italian National Research Council-INO-UOS PISA, Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica, Area di Ricerca, Via G. Moruzzi 1, 56124 Pisa, Italy
| | - Iginio Longo
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti OrganoMetallici, Area di Ricerca, Via G. Moruzzi 1 56124 Pisa, Italy, and Italian National Research Council-INO-UOS PISA, Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica, Area di Ricerca, Via G. Moruzzi 1, 56124 Pisa, Italy
| | - Massimo Onor
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti OrganoMetallici, Area di Ricerca, Via G. Moruzzi 1 56124 Pisa, Italy, and Italian National Research Council-INO-UOS PISA, Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica, Area di Ricerca, Via G. Moruzzi 1, 56124 Pisa, Italy
| | - Alessandro D’Ulivo
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti OrganoMetallici, Area di Ricerca, Via G. Moruzzi 1 56124 Pisa, Italy, and Italian National Research Council-INO-UOS PISA, Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica, Area di Ricerca, Via G. Moruzzi 1, 56124 Pisa, Italy
| | - Emilia Bramanti
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti OrganoMetallici, Area di Ricerca, Via G. Moruzzi 1 56124 Pisa, Italy, and Italian National Research Council-INO-UOS PISA, Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica, Area di Ricerca, Via G. Moruzzi 1, 56124 Pisa, Italy
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27
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High performance liquid chromatography coupled to atomic fluorescence spectrometry for the speciation of the hydride and chemical vapour-forming elements As, Se, Sb and Hg: A critical review. Anal Chim Acta 2010; 671:9-26. [DOI: 10.1016/j.aca.2010.05.011] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2010] [Revised: 05/06/2010] [Accepted: 05/08/2010] [Indexed: 11/21/2022]
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28
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Yin Y, Liu J, He B, Shi J, Jiang G. Mercury speciation by a high performance liquid chromatography—atomic fluorescence spectrometry hyphenated system with photo-induced chemical vapour generation reagent in the mobile phase. Mikrochim Acta 2009. [DOI: 10.1007/s00604-009-0250-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Yan D, Yang L, Wang Q. Alternative Thermodiffusion Interface for Simultaneous Speciation of Organic and Inorganic Lead and Mercury Species by Capillary GC-ICPMS Using Tri-n-propyl-lead Chloride as an Internal Standard. Anal Chem 2008; 80:6104-9. [DOI: 10.1021/ac800347j] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dong Yan
- Department of Chemistry and the MOE Key Laboratory of Modern Analytical Sciences, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China, and State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China
| | - Limin Yang
- Department of Chemistry and the MOE Key Laboratory of Modern Analytical Sciences, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China, and State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China
| | - Qiuquan Wang
- Department of Chemistry and the MOE Key Laboratory of Modern Analytical Sciences, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China, and State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China
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30
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Speciation analysis of mercury in sediments, zoobenthos and river water samples by high-performance liquid chromatography hyphenated to atomic fluorescence spectrometry following preconcentration by solid phase extraction. Anal Chim Acta 2008; 615:115-23. [DOI: 10.1016/j.aca.2008.03.061] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2008] [Revised: 02/26/2008] [Accepted: 03/26/2008] [Indexed: 11/16/2022]
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31
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Ly SY. Voltammetric Assay of Mercury Ion in Fish Kidneys. Toxicol Res 2008; 24:23-28. [PMID: 32038773 PMCID: PMC7006273 DOI: 10.5487/tr.2008.24.1.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2007] [Accepted: 12/21/2007] [Indexed: 11/23/2022] Open
Abstract
Voltammetric analysis of mercury ions was developed using paste electrodes (PEs) with DNA and carbon nanotube mixed electrodes. The optimized analytical results of the cyclic voltammetry (CV) of the 1∼14 ng L−1 Hg(II) concentration and the square wave (SW) stripping voltammetry of the 1∼12 ng L−1 Hg(II) working range within an accumulation time of 400 seconds were obtained in 0.1 M NH4H2PO4 electrolyte solutions of pH 4.0. For the relative standard deviations of the 1 ng L−1 Hg(II), which were observed at 0.078% (n = 15) at the optimum conditions, the low detection limit (S/N) was pegged at 0.2 ng L−1 (7.37 × 10−13M) for Hg(II). The results can be applied to assays in biological fish kidneys and wastewater samples.
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Affiliation(s)
- Suw Young Ly
- Biosensor Research Institute, Seoul National University of Technology, Seoul, 139-743 Korea
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32
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Yin Y, Liu J, He B, Shi J, Jiang G. Simple interface of high-performance liquid chromatography–atomic fluorescence spectrometry hyphenated system for speciation of mercury based on photo-induced chemical vapour generation with formic acid in mobile phase as reaction reagent. J Chromatogr A 2008; 1181:77-82. [DOI: 10.1016/j.chroma.2007.12.050] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2007] [Revised: 12/13/2007] [Accepted: 12/18/2007] [Indexed: 10/22/2022]
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33
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Chen L, Song D, Tian Y, Ding L, Yu A, Zhang H. Application of on-line microwave sample-preparation techniques. Trends Analyt Chem 2008. [DOI: 10.1016/j.trac.2008.01.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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34
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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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35
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Percy AJ, Korbas M, George GN, Gailer J. Reversed-phase high-performance liquid chromatographic separation of inorganic mercury and methylmercury driven by their different coordination chemistry towards thiols. J Chromatogr A 2007; 1156:331-9. [PMID: 17222858 DOI: 10.1016/j.chroma.2006.12.061] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2006] [Revised: 12/02/2006] [Accepted: 12/18/2006] [Indexed: 11/17/2022]
Abstract
Since mercuric mercury (Hg(2+)) and methylmercury (CH(3)Hg(+)) display different toxicological properties in mammals, methods for their quantification in dietary items must be available. Employing Hg-specific detection, we have developed a rapid, isocratic, and affordable RP-HPLC separation of these mercurials using thiol-containing mobile phases. Optimal separation was achieved with a 50mM phosphate-buffer containing 10mM L-cysteine at pH 7.5. The separation is driven by the on-column formation of complexes between each mercurial and L-cysteine, which are then separated according to their different hydrophobicities. The developed method is compatible with inductively coupled plasma atomic emission spectrometry and was applied to analyze spiked human urine.
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Affiliation(s)
- Andrew J Percy
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada
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36
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Shi JB, Ip CCM, Tang CWY, Zhang G, Wu RSS, Li XD. Spatial and temporal variations of mercury in sediments from Victoria Harbour, Hong Kong. MARINE POLLUTION BULLETIN 2007; 54:480-5. [PMID: 17239905 DOI: 10.1016/j.marpolbul.2006.11.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2006] [Revised: 11/15/2006] [Accepted: 11/20/2006] [Indexed: 05/13/2023]
Affiliation(s)
- Jian-Bo Shi
- Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
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37
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Yin Y, Qiu J, Yang L, Wang Q. A new vapor generation system for mercury species based on the UV irradiation of mercaptoethanol used in the determination of total and methyl mercury in environmental and biological samples by atomic fluorescence spectrometry. Anal Bioanal Chem 2007; 388:831-6. [PMID: 17256110 DOI: 10.1007/s00216-007-1122-5] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2006] [Revised: 12/25/2006] [Accepted: 01/08/2007] [Indexed: 10/23/2022]
Abstract
A new vapor generation system for mercury (Hg) species based on the irradiation of mercaptoethanol (ME) with UV was developed to provide an effective sample introduction unit for atomic fluorescence spectrometry (AFS). Preliminary investigations of the mechanism of this novel vapor generation system were based on GC-MS and FT-IR studies. Under optimum conditions, the limits of determination for inorganic divalence mercury and methyl mercury were 60 and 50 pg mL(-1), respectively. Certified reference materials (BCR 463 tuna fish and BCR 580 estuarine sediment) were used to validate this new method, and the results agreed well with certified values. This new system provides an attractive alternative method of chemical vapor generation (CVG) of mercury species compared to other developed CVG systems (for example, the traditional KBH(4)/NaOH-acid system). To our knowledge, this is the first systematic report on UV/ME-based Hg species vapor generation and the determination of total and methyl Hg in environmental and biological samples using UV/ME-AFS.
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Affiliation(s)
- Yanmin Yin
- Department of Chemistry and the MOE Key Laboratory of Analytical Sciences, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
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Houserová P, Kubán V, Krácmar S, Sitko J. Total mercury and mercury species in birds and fish in an aquatic ecosystem in the Czech Republic. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2007; 145:185-94. [PMID: 16720064 DOI: 10.1016/j.envpol.2006.03.027] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2005] [Accepted: 03/20/2006] [Indexed: 05/09/2023]
Abstract
Total mercury and mercury species (methylmercury-MeHg, inorganic mercury--Hg(2+)) were determined in the aquatic ecosystem Záhlinice (Czech Republic). Four tissues (muscle, intestines, liver and kidney) of three bird species--cormorant, great crested grebe and Eurasian buzzard, muscle tissues of common carp, grass carp, northern pike, goldfish, common tench, perch and rudd, aquatic plants (reed mace and common reed), sediments and water were analysed. Relative contents of MeHg (of total Hg) were in the range from 71% to 94% and from 15% up to 62% in the muscle and intestines and in liver, respectively, for all birds. Statistically significant differences were found between contents of MeHg in liver tissues of young and adult cormorant populations (F(4.60)=56.71, P<10(-5)). Relative contents of MeHg in muscle tissues of fishes were in the range from 65.1% to 87.9% of total Hg.
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Affiliation(s)
- Pavlína Houserová
- Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, Zemedelská 1, CZ-613 00 Brno, Czech Republic
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39
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Gupta V, Ali I, Aboul-Enein HY. Chapter 3 Metal ions speciation in the environment: Distribution, toxicities and analyses. CONCEPTS AND APPLICATIONS IN ENVIRONMENTAL GEOCHEMISTRY 2007. [DOI: 10.1016/s1474-8177(07)05003-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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40
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Jin L, Liang L, Jiang G, Xu Y. Methylmercury, total mercury and total selenium in four common freshwater fish species from Ya-Er Lake, China. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2006; 28:401-7. [PMID: 16752127 DOI: 10.1007/s10653-005-9038-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2005] [Accepted: 12/06/2005] [Indexed: 05/10/2023]
Abstract
Snakehead fish (Ophiocephalus argus cantor), silver carp (Hypophthalmichthys molitrtix), crucian carp (Carassius carassius), and common carp (Cyprinus carpio) are four common freshwater fish species in China. In this study, the level of methylmercury (MeHg), total mercury (T-Hg), and total selenium (T-Se) in muscle samples of these four fish species from Ya-Er Lake, China, were analyzed using atomic fluorescence spectrometry coupled with high-performance liquid chromatography, and inductively coupled plasma mass spectrometry. The concentrations of MeHg in all the fish species were significantly correlated with those of T-Hg. Higher T-Hg and MeHg concentrations had accumulated in the snakehead fish, which is a strongly predatory fish, than in the other three species. The concentration ratios of MeHg and T-Hg in the muscles of these four fish species were almost equal. Conversely, there was negative correlation between the concentrations of T-Hg and T-Se, which implies that there is a competition between these two elements with respect to bioaccumulation. It is noteworthy that of all the muscle samples tested, the level of T-Hg exceeded the maximum allowable limit in fish [0.4 mg kg(-1) (w/w) recommended by the World Health Organization] in 38.46% of those of the silver carp, 18.18% of those of the crucian carp, and 100% of those of snakehead fish. These results show that the consumption of contaminated fish is a potential threat to human health and that necessary preventive measures to safeguard public health should be emphasized.
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Affiliation(s)
- Lina Jin
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, China
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41
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Liao CY, Fu JJ, Shi JB, Zhou QF, Yuan CG, Jiang GB. Methylmercury accumulation, histopathology effects, and cholinesterase activity alterations in medaka (Oryzias latipes) following sublethal exposure to methylmercury chloride. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2006; 22:225-233. [PMID: 21783714 DOI: 10.1016/j.etap.2006.03.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2005] [Accepted: 03/29/2006] [Indexed: 05/31/2023]
Abstract
A series of specific toxicological effects including bioaccumulation of the pollutant, histological changes and influences on cholinesterase (ChE) activities were examined in the adult Japanese medaka after the exposure to graded sublethal concentrations (40, 20, 10, 5, 2.5ngHg/mL) of methylmercury chloride (MMC). Methylmercury (MeHg) contents in the exposed medaka tissues ranged from 0.03 to 64.4μgHg/g (wet weight, w.w.). High concentrations of MeHg were accumulated in the liver and brain, while the concentrations in muscle and fat were relatively low. A dose-dependent and exposure time-dependent increase of MeHg contents in tissues was observed. Histopathological changes, such as oedema, vacuolization, pyknotic nucleus, telangiectasis, and degenerative sperm, can clearly be observed in the slices from the liver, gill, and male gonad of the exposed medaka. Inhibition of ChE activity was common in the exposed fish's brain, liver, gill, and muscle. The serious intoxication of MMC to medaka was definitely demonstrated herein.
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Affiliation(s)
- Chun-Yang Liao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
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42
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Shao LJ, Gan WE, Su QD. Determination of total and inorganic mercury in fish samples with on-line oxidation coupled to atomic fluorescence spectrometry. Anal Chim Acta 2006. [DOI: 10.1016/j.aca.2006.01.039] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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43
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Li H, Zhang Y, Zheng C, Wu L, Lv Y, Hou X. UV Irradiation Controlled Cold Vapor Generation Using SnCl 2 as Reductant for Mercury Speciation. ANAL SCI 2006; 22:1361-5. [PMID: 17038777 DOI: 10.2116/analsci.22.1361] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A simple and ultrasensitive method, which was based on cold vapor generation (CVG) coupled to atomic fluorescence spectrometry (AFS), was proposed for speciation analysis of inorganic mercury (Hg2+) and methylmercury (MeHg) in water samples. In the presence of UV irradiation, all the mercury (MeHg+Hg2+) in a sample solution can be reduced to Hg0 by SnCl2; without UV irradiation, only Hg2+ species can be determined. So the concentration of MeHg can be obtained from the difference of the total mercury and Hg2+ concentration; thus, speciation analysis of Hg2+ and MeHg was simply achieved without chromatographic separation. Under the optimized experimental conditions, the limits of detection were 0.01 ng mL-1 for both Hg2+ and MeHg. The sensitivity and limit of detection were not dependent on the mercury species, and a simple Hg2+ aqueous standard series can be used for the determination of both Hg2+ and MeHg.
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Affiliation(s)
- Haimin Li
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, China
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Mishra S, Tripathi R, Bhalke S, Shukla V, Puranik V. Determination of methylmercury and mercury(II) in a marine ecosystem using solid-phase microextraction gas chromatography-mass spectrometry. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2005.07.026] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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45
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Abrankó L, Jókai Z, Fodor P. Investigation of the species-specific degradation behaviour of methylmercury and ethylmercury under microwave irradiation. Anal Bioanal Chem 2005; 383:448-53. [PMID: 16034615 DOI: 10.1007/s00216-005-3395-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2005] [Revised: 06/14/2005] [Accepted: 06/14/2005] [Indexed: 11/30/2022]
Abstract
The degradation behaviour of methylmercury (MeHg) under microwave irradiation is investigated, as is the (different) degradation behaviour of ethylmercury (EtHg) under similar irradiation. A simple and highly sensitive SPME-GC-pyrolysis-AFS system was used to analyse the aqueous MeHg and EtHg standard solutions after derivatization with sodium tetraphenylborate (NaBPh(4)). Samples were irradiated in a microwave digester at microwave powers ranging from 20 to 160 W for durations of 2 to 10 min. The different tolerances towards microwave treatment of the two organomercury species were evident. Practically no degradation was experienced for MeHg for up to 8 minutes of irradiation at 120 W or for up to 4 minutes at 160 W. Significant analyte loss was observed for EtHg after 2 minutes at 40 W of microwave power.
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Affiliation(s)
- László Abrankó
- Department of Applied Chemistry, Corvinus University of Budapest, Villányi út 29-33, 1118 Budapest, Hungary.
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46
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Measuring mercury ion concentration with a carbon nano tube paste electrode using the cyclic voltammetry method. J APPL ELECTROCHEM 2005. [DOI: 10.1007/s10800-005-2058-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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47
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Yawei W, Lina L, Jianbo S, Guibin J. Chemometrics methods for the investigation of methylmercury and total mercury contamination in mollusks samples collected from coastal sites along the Chinese Bohai Sea. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2005; 135:457-467. [PMID: 15749543 DOI: 10.1016/j.envpol.2004.11.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2004] [Accepted: 11/22/2004] [Indexed: 05/24/2023]
Abstract
The development and application of chemometrics methods, principal component analysis (PCA), cluster analysis and correlation analysis for the determination of methylmercury (MeHg) and total mecury (HgT) in gastropod and bivalve species collected from eight coastal sites along the Chinese Bohai Sea are described. HgT is directly determined by atomic fluorescence spectrometry (AFS), while MeHg is measured by a laboratory established high performance liquid chromatography-atomic fluorescence spectrometry system (HPLC-AFS). One-way ANOVA and cluster analysis indicated that the bioaccumulation of Rap to accumulate Hg was significantly (P<0.05) different from other mollusks. Correlation analysis shows that there is linear relationship between MeHg and HgT in mollusks samples collected from coastal sites along the Chinese Bohai Sea, while in mollusks samples collected from Hongqiao market in Beijing City, there is not any linear relationship.
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Affiliation(s)
- Wang Yawei
- Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
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Shi JB, Liang LN, Jiang GB, Jin XL. The speciation and bioavailability of mercury in sediments of Haihe River, China. ENVIRONMENT INTERNATIONAL 2005; 31:357-65. [PMID: 15734189 DOI: 10.1016/j.envint.2004.08.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2004] [Accepted: 08/24/2004] [Indexed: 05/17/2023]
Abstract
Twenty-one sediment samples in 11 sites along the Haihe River and Dagu Drainage River, Tianjin, China, were analyzed to investigate the pollution status and bioavailability of mercury (Hg). The results showed that the Haihe River was slightly polluted with Hg when flowing through Tianjin city. On the contrary, the sediments collected from Dagu Drainage River, an important drainage river in Tianjin, were found to have very high Hg concentrations and the highest concentration reached 8779.1 ng g(-1) (dry weight). The methylmercury (MeHg) concentrations accounted for 0.1-2.4% (average: 0.9%) of total mercury (HgT) and were strongly influenced by HgT (r=0.91, p=0.99, n=20) and total organic carbon (TOC; r=0.76, p=0.99, n=20) contents in sediments. Moreover, a five-step sequential selective extraction (SSE) procedure was used to study the bioavailability of Hg in sediments. The mercury in sediments existed mainly as element Hg and mercury sulfide, which accounted for 46.5% and 39.0% of HgT, respectively. The percentage of exchangeable Hg (defined as water soluble Hg plus 'human stomach acid' soluble Hg) was only 0.1-4.6%. The distribution of exchangeable Hg showed an obvious difference to that of HgT, indicating that the HgT concentrations were absolutely insufficient to evaluate the risk of Hg in sediments.
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Affiliation(s)
- Jian-Bo Shi
- Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
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49
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Gómez-Ariza JL, Lorenzo F, García-Barrera T. Comparative study of atomic fluorescence spectroscopy and inductively coupled plasma mass spectrometry for mercury and arsenic multispeciation. Anal Bioanal Chem 2005; 382:485-92. [PMID: 15782336 DOI: 10.1007/s00216-005-3094-7] [Citation(s) in RCA: 90] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2004] [Revised: 01/03/2005] [Accepted: 01/20/2005] [Indexed: 11/30/2022]
Abstract
Mercury and arsenic are two elements of undoubted importance owing to their toxic character. Although speciation of these elements has been developed separately, in this work for the first time the speciation of As and Hg using two atomic fluorescence detectors in a sequential ensemble is presented. A coupling based on the combination of high-performance liquid chromatography (where mercury and arsenic species are separated) and two atomic fluorescence detectors in series, with several online treatments, including photooxidation (UV) and hydride generation, has allowed the determination of mercury and arsenic compounds simultaneously. The detection limits for this device were 16, 3, 17, 12 and 8 ng mL(-1) for As(III), monomethylarsinic acid, As(V), Hg2+ and methylmercury, respectively. This coupling was compared with an analogous one based on inductively coupled plasma-mass spectrometry (ICP-MS) detection, with detection limits of 0.7, 0.5, 0.8, 0.9 and 1.1 ng mL(-1), respectively. Multispeciation based on ICP-MS exhibits better sensitivity than the coupling based on tandem atomic fluorescence, but this second device is a very robust system and exhibits obvious advantages related to the low cost of acquisition and maintenance, as well as easy handling, which makes it a suitable system for routine laboratories.
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Affiliation(s)
- José Luis Gómez-Ariza
- Dpto. Química y CC.MM., Facultad de Ciencias Experimentales, Universidad de Huelva, Campus de El Carmen, 21071, Huelva, Spain.
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Gómez-Ariza JL, Lorenzo F, García-Barrera T. Simultaneous determination of mercury and arsenic species in natural freshwater by liquid chromatography with on-line UV irradiation, generation of hydrides and cold vapor and tandem atomic fluorescence detection. J Chromatogr A 2004; 1056:139-44. [PMID: 15595543 DOI: 10.1016/j.chroma.2004.05.079] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An approach based on the coupling HPLC-UV-CV/HG-mAFS-AFS has been developed for the simultaneous determination of mercury and arsenic species. A home modified AFS detector has been used for the analysis of mercury coupled in series with another similar detector for arsenic determination. The determined species were Hg2+, methylmercury (MeHg+), As(III), As(V) and monomethylarsinate (MMA). A critical aspect is the chromatographic separation, which was carefully optimized for the separation of all the species. The detection limits for these species are 11, 8, 17, 17 and 3 ng ml(-1), respectively. Linear curves for MMA were obtained between 10 and 200 ng ml(-1). The linear dynamic range for all the other species was comprised between the detection limit and 500 ng ml(-1). The influence of cations and anions at the concentration usually present in natural freshwater was studied. The procedure was validated by application to spiked natural freshwater samples from the south-west Spain, and it can be considered for routine analysis of polluted sites.
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Affiliation(s)
- José Luis Gómez-Ariza
- Dpto. Química y Ciencias de los Materiales, Facultad de Ciencias Experimentales, Universidad de Huelva, Campus de El Carmen, 21007 Huelva, Spain.
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