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Denuzière A, Ghersi-Egea JF. Cerebral concentration and toxicity of endocrine disrupting chemicals: The implication of blood-brain interfaces. Neurotoxicology 2022; 91:100-118. [DOI: 10.1016/j.neuro.2022.04.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 04/06/2022] [Accepted: 04/12/2022] [Indexed: 11/28/2022]
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2
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Callejón-Leblic B, Selma-Royo M, Collado MC, Abril N, García-Barrera T. Impact of Antibiotic-Induced Depletion of Gut Microbiota and Selenium Supplementation on Plasma Selenoproteome and Metal Homeostasis in a Mice Model. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:7652-7662. [PMID: 34171188 PMCID: PMC9161447 DOI: 10.1021/acs.jafc.1c02622] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Selenium (Se) is a micronutrient involved in important health functions and it has been suggested to shape gut microbiota. Limited information on Se assimilation by gut microbes and the possible link with selenoproteins are available. For this purpose, conventional and gut microbiota-depleted BALB/c mice were fed a Se-supplemented diet. The absolute quantification of mice plasma selenoproteins was performed for the first time using heteroatom-tagged proteomics. The gut microbiota profile was analyzed by 16S rRNA gene sequencing. Se-supplementation modulated the concentration of the antioxidant glutathione peroxidase and the Se-transporter selenoalbumin as well as the metal homeostasis, being influenced by microbiota disruption, which suggests an intertwined mechanism. Se also modulated microbiota diversity and richness and increased the relative abundance of some health-relevant taxa (e.g., families Christensenellaceae, Ruminococcaceae, and Lactobacillus genus). This study demonstrated the potential beneficial effects of Se on gut microbiota, especially after antibiotic-treatment and the first associations between specific bacteria and plasma selenoproteins.
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Affiliation(s)
- Belén Callejón-Leblic
- Research
Center of Natural Resources, Health and the Environment (RENSMA),
Department of Chemistry, Faculty of Experimental Sciences, University of Huelva, Fuerzas Armadas Avenue, 21007 Huelva, Spain
| | - Marta Selma-Royo
- Department
of Biotechnology, Institute of Agrochemistry
and Food Technology-National Research Council (IATA-CSIC), Agustin Escardino 7, Paterna, 46980 Valencia, Spain
| | - María Carmen Collado
- Department
of Biotechnology, Institute of Agrochemistry
and Food Technology-National Research Council (IATA-CSIC), Agustin Escardino 7, Paterna, 46980 Valencia, Spain
| | - Nieves Abril
- Department
of Biochemistry and Molecular Biology, University
of Córdoba, Campus de Rabanales, Edificio Severo Ochoa, E-14071 Córdoba, Spain
| | - Tamara García-Barrera
- Research
Center of Natural Resources, Health and the Environment (RENSMA),
Department of Chemistry, Faculty of Experimental Sciences, University of Huelva, Fuerzas Armadas Avenue, 21007 Huelva, Spain
- . Phone: +34 959219962
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Zhan J, Ma X, Liu D, Liang Y, Li P, Cui J, Zhou Z, Wang P. Gut microbiome alterations induced by tributyltin exposure are associated with increased body weight, impaired glucose and insulin homeostasis and endocrine disruption in mice. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115276. [PMID: 32835916 DOI: 10.1016/j.envpol.2020.115276] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/15/2020] [Accepted: 07/19/2020] [Indexed: 06/11/2023]
Abstract
Tributyltin (TBT), an organotin compound once widely used in agriculture and industry, has been reported to induce obesity and endocrine disruption. Gut microbiota has a strong connection with the host's physiology. Nevertheless, the influences of TBT exposure on gut microbiota and whether TBT-influenced gut microbiota is related to TBT-induced toxicity remain unclear. To fill these gaps, ICR (CD-1) mice were respectively exposed to TBT at NOEL (L-TBT) and tenfold NOEL (H-TBT) daily by gavage for 8 weeks in the current study. The results showed that TBT exposure significantly increased body weight as well as epididymal fat, and led to adipocyte hypertrophy, dyslipidemia and impaired glucose and insulin homeostasis in mice. Additionally, TBT exposure significantly decreased the levels of T4, T3 and testosterone in serum. Also of note, TBT exposure changed gut microbiota composition mainly by decreasing Bacteroidetes and increasing Firmicutes proportions. To confirm the role of gut microbiota in TBT-induced overweight and hormonal disorders, fecal microbiota transplantation was performed and the mice receiving gut microbiota from H-TBT mice had similar phenotypes with their donor mice including significant body weight and epididymal fat gain, glucose and insulin dysbiosis and hormonal disorders. These results suggested that gut microbiome altered by TBT exposure was involved in the TBT-induced increased body weight, impaired glucose and insulin homeostasis and endocrine disruption in mice, providing significant evidence and a novel perspective for better understanding the mechanism by which TBT induces toxicity.
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Affiliation(s)
- Jing Zhan
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Xiaoran Ma
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Donghui Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Yiran Liang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Peize Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Jingna Cui
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Zhiqiang Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Peng Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China.
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Valentinuzzi F, Pii Y, Carlo P, Roberto T, Fontanella MC, Beone GM, Astolfi S, Mimmo T, Cesco S. Root-shoot-root Fe translocation in cucumber plants grown in a heterogeneous Fe provision. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 293:110431. [PMID: 32081271 DOI: 10.1016/j.plantsci.2020.110431] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/17/2020] [Accepted: 01/28/2020] [Indexed: 06/10/2023]
Abstract
Iron (Fe) is an essential micronutrient for plant life and development. However, in soil, Fe bioavailability is often limited and variable in space and time, thus different regions of the same root system might be exposed to different nutrient provisions. Few studies showed that the response to variable Fe provision is controlled at local and systemic levels, albeit the identity of the signals involved is still elusive. Iron itself was suggested as local mediator, whilst hormones were proposed for the long-distance signalling pathway. Therefore, the aim of this work was to assess whether Fe, when localized in a restricted area of the root system, might be involved in both local and systemic signaling. The combination of resupply experiments in a split-root system, the use of 57Fe isotope and chemical imaging techniques allowed tracing Fe movement within cucumber plants. Soon after the resupply, Fe is distributed to the whole plant, likely to overcome a minimum Fe concentration threshold aimed at repressing the deficiency response. Iron was then preferentially translocated to leaves and, only afterwards, the root system was completely resupplied. Collectively, these observations might thus highlight a root-to-shoot-to-root Fe translocation route in cucumber plants grown on a patchy nutrient substrate.
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Affiliation(s)
- Fabio Valentinuzzi
- Faculty of Science and Technology, Free University of Bozen-Bolzano, I-39100, Bolzano, Italy
| | - Youry Pii
- Faculty of Science and Technology, Free University of Bozen-Bolzano, I-39100, Bolzano, Italy.
| | - Porfido Carlo
- Department of Soil, Plant and Food Sciences, University of Bari "Aldo Moro'', I-70126, Bari, Italy
| | - Terzano Roberto
- Department of Soil, Plant and Food Sciences, University of Bari "Aldo Moro'', I-70126, Bari, Italy
| | - Maria Chiara Fontanella
- Department for Sustainable Food Process, Faculty of Agriculture, Food and Environmental Sciences, Università Cattolica del Sacro Cuore, I-29122, Piacenza, Italy
| | - Gian Maria Beone
- Department for Sustainable Food Process, Faculty of Agriculture, Food and Environmental Sciences, Università Cattolica del Sacro Cuore, I-29122, Piacenza, Italy
| | - Stefania Astolfi
- Department of Agricultural and Forestry Sciences, University of Tuscia, I-01100, Viterbo, Italy
| | - Tanja Mimmo
- Faculty of Science and Technology, Free University of Bozen-Bolzano, I-39100, Bolzano, Italy
| | - Stefano Cesco
- Faculty of Science and Technology, Free University of Bozen-Bolzano, I-39100, Bolzano, Italy
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5
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Importance of ICPMS for speciation analysis is changing: future trends for targeted and non-targeted element speciation analysis. Anal Bioanal Chem 2017; 410:661-667. [PMID: 28735451 PMCID: PMC5775347 DOI: 10.1007/s00216-017-0502-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 06/10/2017] [Accepted: 06/27/2017] [Indexed: 01/03/2023]
Abstract
This article is aimed at researchers interested in organic molecules which contain a heteroatom but who have never considered using inductively coupled plasma mass spectrometry (ICPMS) or who have used ICPMS for years and developed numerous methods for analysis of target elemental species. We try to illustrate (1) that ICPMS has been very useful for speciation analysis of metal(loid) target species and that there is now a trend to replace the costly detector with cheaper detection systems for routine target analysis, and (2) that ICPMS has been used and will be used even more in the future for non-targeted analysis of elements which are not normally associated with ICPMS analysis, such as non-metals such as sulfur, phosphorus, chlorine and fluorine. Starting with HPLC-ICPMS for non-targeted analysis of heteroatom containing molecules, once target molecule is identified alternative detectors can be used for routine measurements ![]()
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Perrot V, Masbou J, Pastukhov MV, Epov VN, Point D, Bérail S, Becker PR, Sonke JE, Amouroux D. Natural Hg isotopic composition of different Hg compounds in mammal tissues as a proxy for in vivo breakdown of toxic methylmercury. Metallomics 2016; 8:170-8. [PMID: 26680232 DOI: 10.1039/c5mt00286a] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the last decade, specific attention has been paid to total mercury (HgT) stable isotopic composition, especially in natural samples such as aquatic organisms, due to its potential to track the cycle of this toxic element in the environment. Here, we investigated Hg Compound Specific stable Isotopic Composition (CSIC) of natural inorganic Hg (iHg) and methylmercury (MMHg) in various tissues of aquatic mammals (Beluga whale from the Arctic marine environment and seals from the freshwater lake Baikal, Russia). In seals' organs the variation in mass dependent fractionation (MDF, δ(202)Hg) for total Hg was significantly correlated to the respective fraction of iHg and MMHg compounds, with MMHg being enriched by ∼ 3‰ in heavier isotopes relative to iHg. On the other hand, we observe insignificant variation in Hg mass independent isotope fractionation (MIF, Δ(199)Hg) among iHg and MMHg in all organs for the same mammal species and MMHg in prey items. MIF signatures suggest that both MMHg and iHg in aquatic mammals have the same origin (i.e., MMHg from food), and are representative of Hg photochemistry in the water column of the mammal ecosystem. MDF signatures of Hg compounds indicate that MMHg is demethylated in vivo before being stored in the muscle, and the iHg formed is stored in the liver, and to a lesser extent in the kidney, before excretion. Thus, Hg CSIC analysis in mammals can be a powerful tool for tracing the metabolic response to Hg exposure.
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Affiliation(s)
- Vincent Perrot
- Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, Institut des Sciences Analytiques et de Physico-chimie pour l'Environnement et les Matériaux, IPREM UMR-5254, CNRS-UPPA, Hélioparc, 2 Avenue du Président Pierre Angot, Pau, 64053, France.
| | - Jeremy Masbou
- Laboratoire Géosciences Environnement Toulouse, Observatoire Midi-Pyrénées CNRS-IRD-Université de Toulouse 3, 14 avenue Edouard Belin, Toulouse, 31400, France
| | - Mikhail V Pastukhov
- Laboratory of Geochemical Mapping and Monitoring, Institute of Geochemistry SB RAS, 1A Favorskogo Street, PB-304, Irkutsk, 664033, Russia
| | - Vladimir N Epov
- Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, Institut des Sciences Analytiques et de Physico-chimie pour l'Environnement et les Matériaux, IPREM UMR-5254, CNRS-UPPA, Hélioparc, 2 Avenue du Président Pierre Angot, Pau, 64053, France.
| | - David Point
- Laboratoire Géosciences Environnement Toulouse, Observatoire Midi-Pyrénées CNRS-IRD-Université de Toulouse 3, 14 avenue Edouard Belin, Toulouse, 31400, France
| | - Sylvain Bérail
- Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, Institut des Sciences Analytiques et de Physico-chimie pour l'Environnement et les Matériaux, IPREM UMR-5254, CNRS-UPPA, Hélioparc, 2 Avenue du Président Pierre Angot, Pau, 64053, France.
| | - Paul R Becker
- National Institute of Standards and Technology, Hollings Marine Laboratory, Charleston, South Carolina, USA
| | - Jeroen E Sonke
- Laboratoire Géosciences Environnement Toulouse, Observatoire Midi-Pyrénées CNRS-IRD-Université de Toulouse 3, 14 avenue Edouard Belin, Toulouse, 31400, France
| | - David Amouroux
- Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, Institut des Sciences Analytiques et de Physico-chimie pour l'Environnement et les Matériaux, IPREM UMR-5254, CNRS-UPPA, Hélioparc, 2 Avenue du Président Pierre Angot, Pau, 64053, France.
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7
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Richter J, Fettig I, Philipp R, Jakubowski N, Panne U, Fisicaro P, Alasonati E. Determination of tributyltin in whole water matrices under the European Water Framework Directive. J Chromatogr A 2016; 1459:112-119. [DOI: 10.1016/j.chroma.2016.06.068] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 06/20/2016] [Accepted: 06/21/2016] [Indexed: 10/21/2022]
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8
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Niu L, Li Y, Li Q. Medicinal properties of organotin compounds and their limitations caused by toxicity. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.05.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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10
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Loeschner K, Hadrup N, Hansen M, Pereira SA, Gammelgaard B, Møller LH, Mortensen A, Lam HR, Larsen EH. Absorption, distribution, metabolism and excretion of selenium following oral administration of elemental selenium nanoparticles or selenite in rats. Metallomics 2014; 6:330-7. [DOI: 10.1039/c3mt00309d] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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González-Antuña A, Domínguez-Romero JC, García-Reyes JF, Rodríguez-González P, Centineo G, García Alonso JI, Molina-Díaz A. Overcoming matrix effects in electrospray: quantitation of β-agonists in complex matrices by isotope dilution liquid chromatography-mass spectrometry using singly (13)C-labeled analogues. J Chromatogr A 2013; 1288:40-7. [PMID: 23523066 DOI: 10.1016/j.chroma.2013.02.074] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2012] [Revised: 02/12/2013] [Accepted: 02/24/2013] [Indexed: 10/27/2022]
Abstract
In this work, the implementation of isotope dilution mass spectrometry (IDMS) using minimal labeling and isotope pattern deconvolution (IPD) is evaluated as a strategy for the minimization of matrix effects during trace determination of β2-agonists in complex matrices by liquid chromatography electrospray ionization mass spectrometry (LC-ESI-MS). First, the parameters affecting the measurement of isotopic composition of organic compounds by liquid chromatography electrospray ionization high resolution mass spectrometry with a time-of-flight analyzer were evaluated using as a case of study three different β2-agonists: clenbuterol, clenproperol and brombuterol. Then, a calibration graph-free IDMS methodology was evaluated in order to overcome matrix effects in LC-ESI-MS in complex samples. In this procedure singly (13)C-labeled analogues of clenbuterol, clenproperol and brombuterol were employed in combination with IPD. Using this approach accurate and precise results were obtained in the simultaneous quantification of β2-agonists in human urine and bovine liver, even at the sub ngg(-1) and particularly in spite of the previously reported matrix effects. Recovery rates in the range of 97-114% in fortified human urine and from 95% to 111% in fortified bovine liver were obtained with RSD (%) of independent recovery experiments always lower than 6%. These results demonstrate that the proposed methodology based on the use of (13)C1-labeled standards and IPD is a reliable approach for accurate LC-MS quantitation of small molecules and compatible with full-scan high-resolution mass spectrometry.
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Affiliation(s)
- Ana González-Antuña
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, Julián Clavería 8, 33006 Oviedo, Spain
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Castillo A, Gracia-Lor E, Roig-Navarro AF, Vicente Sancho J, Rodríguez-González P, García Alonso JI. Isotope pattern deconvolution-tandem mass spectrometry for the determination and confirmation of diclofenac in wastewaters. Anal Chim Acta 2012; 765:77-85. [PMID: 23410629 DOI: 10.1016/j.aca.2012.11.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 10/11/2012] [Accepted: 11/18/2012] [Indexed: 10/27/2022]
Abstract
Isotope dilution mass spectrometry (IDMS) based on isotope pattern deconvolution (IPD) has been applied here to MS/MS (QqQ) in order to carry out the quantification and confirmation of organic compounds in complex matrix water samples without the use of a methodological IDMS calibration graph. In this alternative approach, the isotope composition of the spiked sample is measured after fragmentation by SRM and deconvoluted into its constituting components (molar fractions of natural abundance and labeled compound) by multiple linear regression (IPD). The procedure has been evaluated for the determination of the pharmaceutical diclofenac in effluent and influent urban wastewaters and fortified surface waters by UHPLC (ESI) MS/MS using diclofenac-d(4) as labeled compound. Calculations were performed acquiring a part and the whole fragment cluster ion, achieving in all cases recoveries within 90-110% and coefficients of variation below 5% for all water samples tested. In addition, potential false negatives arising from the presence of diclofenac-d(2) impurities in the labeled compound were avoided when the proposed approach was used instead of the most usual IDMS calibration procedure. The number of SRM transitions measured was minimized to three to make possible the application of this alternative technique in routine multi-residue analysis.
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Affiliation(s)
- Angel Castillo
- Research Institute for Pesticides and Water, Universitat Jaume I, Castelló, Spain
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Fabregat-Cabello N, Rodríguez-González P, Castillo Á, Malherbe J, Roig-Navarro AF, Long SE, García Alonso JI. Fast and accurate procedure for the determination of Cr(VI) in solid samples by isotope dilution mass spectrometry. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2012; 46:12542-12549. [PMID: 23092182 DOI: 10.1021/es3022864] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We present here a new environmental measurement method for the rapid extraction and accurate quantification of Cr(VI) in solid samples. The quantitative extraction of Cr(VI) is achieved in 10 minutes by means of focused microwave assisted extraction using 50 mmol/L Ethylendiamintetraacetic acid (EDTA) at pH 10 as extractant. In addition, it enables the separation of Cr species by anion exchange chromatography using a mobile phase which is a 1:10 dilution of the extracting solution. Thus, neutralization or acidification steps which are prone to cause interconversion of Cr species are not needed. Another benefit of using EDTA is that it allows to measure Cr(III)-EDTA complex and Cr(VI) simultaneously in an alkaline extraction solution. The application of a 10 minutes focused microwave assisted extraction (5 min at 90 °C plus 5 min at 110 °C) has been shown to quantitatively extract all forms of hexavalent chromium from the standard reference materials (SRM) candidate NIST 2700 and NIST 2701. A double spike isotope dilution mass spectrometry (IDMS) procedure was employed to study chromium interconversion reactions. It was observed that the formation of a Cr(III)-EDTA complex avoided Cr(III) oxidation for these two reference materials. Thus, the use of a double spiking strategy for quantification is not required and a single spike IDMS procedure using isotopically enriched Cr(VI) provided accurate results.
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Affiliation(s)
- Neus Fabregat-Cabello
- Faculty of Chemistry, Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería 8, 33006 Oviedo, Spain
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Navarro P, Amouroux D, Thanh ND, Rochelle-Newall E, Ouillon S, Arfi R, Van TC, Mari X, Torréton JP. Fate and tidal transport of butyltin and mercury compounds in the waters of the tropical Bach Dang Estuary (Haiphong, Vietnam). MARINE POLLUTION BULLETIN 2012; 64:1789-1798. [PMID: 22717320 DOI: 10.1016/j.marpolbul.2012.05.036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Revised: 05/15/2012] [Accepted: 05/23/2012] [Indexed: 06/01/2023]
Abstract
In this work, two field campaigns were performed in July 2008 (wet season) and March 2009 (dry season) to produce original data on the concentration, partition and distribution of mercury and butyltin compounds along the tropical Bach Dang Estuary located in North Vietnam (Haiphong, Red River Delta). The results demonstrate that mercury and butyltin speciation in the surface waters of this type of tropical estuary is greatly affected by the drastic changes in the seasonal conditions. During high river discharge in the wet season, there was a large estuarine input of total Hg and tributyltin, while the longer residence time of the waters during the dry season promotes increasing MMHg formation and TBT degradation. Although most of the Hg and TBT is transported into the estuary from upstream sources, tidal cycle measurements demonstrate that this estuary is a significant source of TBT and MMHg during the wet (~3 kg TBT/day) and dry (~3 g MMHg/day) seasons.
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Affiliation(s)
- Patricia Navarro
- Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, UMR 5254 IPREM, CNRS, Université de Pau et des Pays de l'Adour, 2 Avenue Président Pierre Angot, 64053 Pau, France
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15
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Laffont L, Maurice L, Amouroux D, Navarro P, Monperrus M, Sonke JE, Behra P. Mercury speciation analysis in human hair by species-specific isotope-dilution using GC–ICP–MS. Anal Bioanal Chem 2012; 405:3001-10. [DOI: 10.1007/s00216-012-6116-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Revised: 05/11/2012] [Accepted: 05/15/2012] [Indexed: 11/29/2022]
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16
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González-Antuña A, Rodríguez-González P, Centineo G, García Alonso JI. Evaluation of minimal 13C-labelling for stable isotope dilution in organic analysis. Analyst 2010; 135:953-64. [PMID: 20419243 DOI: 10.1039/b924432h] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A procedure for Stable Isotope Dilution Analysis in molecular Mass Spectrometry which does not require a methodological calibration graph and can be applied in combination with minimal labelling has been evaluated. This alternative approach is based on the determination of the molar fractions for each pure isotope pattern (natural abundance or labelled) contributing to the isotope pattern observed in the mixture of natural abundance and labelled molecules by multiple linear regression. Two labelled compounds, (13)C(1)-labelled or (13)C(6)-labelled phenol, were compared to study the influence of the number of (13)C atoms in the labelled molecule. The procedure was evaluated by comparing the results obtained for the determination of phenol in NIST 1584 CRM by GC-EI-MS using the classical isotope dilution calibration procedure and the new procedure based on multiple linear regression of isotope patterns without a calibration graph. The results obtained using the proposed procedure agreed well with both the certified values and those obtained using the classical Isotope Dilution Mass Spectrometry (IDMS) calibration procedures. For the evaluated procedure, a full uncertainty budget determination has been developed taking into account all uncertainty sources, including those derived from the uncertainties in the isotope patterns of the natural and labelled compounds. The measurements with the (13)C(1)-labelled phenol provided lower propagated uncertainties in comparison to the use of (13)C(6)-labelled phenol.
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Affiliation(s)
- Ana González-Antuña
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, Spain
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17
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Internal correction of hafnium oxide spectral interferences and mass bias in the determination of platinum in environmental samples using isotope dilution analysis. Anal Bioanal Chem 2009; 394:351-62. [DOI: 10.1007/s00216-009-2681-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2008] [Revised: 01/30/2009] [Accepted: 02/04/2009] [Indexed: 10/21/2022]
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18
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Xiao Q, Hu B, He M. Speciation of butyltin compounds in environmental and biological samples using headspace single drop microextraction coupled with gas chromatography-inductively coupled plasma mass spectrometry. J Chromatogr A 2008; 1211:135-41. [DOI: 10.1016/j.chroma.2008.09.089] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2008] [Revised: 09/23/2008] [Accepted: 09/26/2008] [Indexed: 10/21/2022]
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del Castillo Busto ME, Montes-Bayón M, Bettmer J, Sanz-Medel A. Stable isotope labelling and FPLC–ICP-SFMS for the accurate determination of clinical iron status parameters in human serum. Analyst 2008; 133:379-84. [DOI: 10.1039/b715311b] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Meija J, Mester Z. Paradigms in isotope dilution mass spectrometry for elemental speciation analysis. Anal Chim Acta 2008; 607:115-25. [DOI: 10.1016/j.aca.2007.11.050] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2007] [Revised: 11/23/2007] [Accepted: 11/26/2007] [Indexed: 10/22/2022]
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Rodríguez-Castrillón JÁ, Moldovan M, García Alonso JI, Lucena JJ, García-Tomé ML, Hernández-Apaolaza L. Isotope pattern deconvolution as a tool to study iron metabolism in plants. Anal Bioanal Chem 2007; 390:579-90. [DOI: 10.1007/s00216-007-1716-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2007] [Revised: 10/19/2007] [Accepted: 10/22/2007] [Indexed: 01/07/2023]
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22
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Stürup S, Hansen HR, Gammelgaard B. Application of enriched stable isotopes as tracers in biological systems: a critical review. Anal Bioanal Chem 2007; 390:541-54. [PMID: 17917720 DOI: 10.1007/s00216-007-1638-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2007] [Revised: 09/11/2007] [Accepted: 09/17/2007] [Indexed: 10/22/2022]
Abstract
The application of enriched stable isotopes of minerals and trace elements as tracers in biological systems is a rapidly growing research field that benefits from the many new developments in inorganic mass spectrometric instrumentation, primarily within inductively coupled plasma mass spectrometry (ICP-MS) instrumentation, such as reaction/collision cell ICP-MS and multicollector ICP-MS with improved isotope ratio measurement and interference removal capabilities. Adaptation and refinement of radioisotope tracer experiment methodologies for enriched stable isotope experiments, and the development of new methodologies coupled with more advanced compartmental and mathematical models for the distribution of elements in living organisms has enabled a broader use of enriched stable isotope experiments in the biological sciences. This review discusses the current and future uses of enriched stable isotope experiments in biological systems.
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Affiliation(s)
- Stefan Stürup
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100, Copenhagen, Denmark.
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González Iglesias H, Fernández Sánchez ML, García Alonso JI, Sanz-Medel A. Use of enriched 74Se and 77Se in combination with isotope pattern deconvolution to differentiate and determine endogenous and supplemented selenium in lactating rats. Anal Bioanal Chem 2007; 389:707-13. [PMID: 17673984 DOI: 10.1007/s00216-007-1499-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2007] [Revised: 06/27/2007] [Accepted: 07/05/2007] [Indexed: 10/23/2022]
Abstract
A quantitative methodology has been developed to differentiate between endogenous and supplemented selenium in lactating rats using two enriched selenium isotopes. Lactating rats were fed for 2 weeks with formula milk containing one enriched Se isotope, (77)Se, as the metabolic tracer. The isotopic composition of selenium in serum and urine samples was then measured by collision cell ICP-MS after the addition of a solution containing another enriched isotope, (74)Se, as quantitation tracer, before analysis. Isotope pattern deconvolution allowed the transformation of measured Se isotopic abundances into concentrations of natural abundance (endogenous) selenium and enriched (77)Se (supplemented) present in the samples. The proposed methodology was validated using serum and urine reference materials spiked with both (77)Se and (74)Se. The obtained results are discussed in terms of selenium exchange and half-life in lactating rats (11-12 days) and selenium levels in serum in comparison with non-supplemented rats and control rats after maternal feeding.
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Affiliation(s)
- H González Iglesias
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, Julián Clavería 8, 33006 Oviedo, Spain
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Üveges M, Rodríguez-González P, García Alonso JI, Sanz-Medel A, Fodor P. Isotope dilution analysis mass spectrometry for the routine measurement of butyltin compounds in marine environmental and biological samples. Microchem J 2007. [DOI: 10.1016/j.microc.2006.04.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hirner AV. Speciation of alkylated metals and metalloids in the environment. Anal Bioanal Chem 2006; 385:555-67. [PMID: 16715277 DOI: 10.1007/s00216-006-0368-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2005] [Revised: 02/13/2006] [Accepted: 02/14/2006] [Indexed: 10/24/2022]
Abstract
The analytical methodology for speciation of metals and metalloids associated with alkyl groups and biomacromolecules is critically reviewed. Alkylated metals and metalloids are not only known to be produced by microbial methylation within most anaerobic compartments in the environment, but also in the course of enzymatic transformations during human metabolism. Because of the toxicological relevance of these compounds present in trace to ultratrace concentrations, firm species identification and exact quantification are essential. While many instrumental techniques coupling chromatography (GC, HPLC, CE, GE) with plasma mass spectrometry (ICP-MS) are available for quantification, methods used for structural identification often suffer from inadequate sensitivity (EI-MS, ESI-MS, MALDI-MS, FT-ICRMS). Other problems encountered are sample derivatisation artefacts, lack of suitable standards for quantification, lack of equilibrium between spikes and sample, and the integrity of metal-protein association during separation, in particular during SDS-PAGE. Selected application examples with respect to mercury and arsenic speciation will be discussed critically.
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Affiliation(s)
- Alfred V Hirner
- Institute of Environmental Analytical Chemistry, University of Duisburg-Essen, Universitätsstrasse 3-5, 45141 Essen, Germany.
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Meija J. Mathematical tools in analytical mass spectrometry. Anal Bioanal Chem 2006; 385:486-99. [PMID: 16514517 DOI: 10.1007/s00216-006-0298-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2005] [Revised: 12/14/2005] [Accepted: 01/05/2006] [Indexed: 10/25/2022]
Abstract
Over the last few decades, mass spectrometry has become a powerful tool for exploring various aspects of molecular processes occurring in biological systems. Such exploration is leading to a greater understanding of various complex life processes; unraveling these processes poses the greatest challenge to contemporary bioscience. With due respect to sample preparation, data analysis is rapidly becoming a major obstacle to the conversion of experimental knowledge into valid conclusions. It is interesting to note that many problems related to mass spectrometry can be solved using techniques from computer science, graph theory and discrete mathematics. The aim of this manuscript is to recollect several essays that demonstrate the power and the need to apply such skills to mass spectrometry data interpretation. Special attention is paid to situations where traditional chemical analysis reaches its limits but mathematical reasoning can still allow us to reach valid conclusions.
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Affiliation(s)
- Juris Meija
- Department of Chemistry, University of Cincinnati, Cincinnati, OH 45221-0172, USA.
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