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Ramos B, Vaz WF, Diniz LF, Sanches Neto FO, Ribeiro JCO, Carvalho-Silva VH, Teixeira ACSC, Ribeiro C, Napolitano HB, Carvalho PS. Kinetics, mechanism, and tautomerism in ametryn acid hydrolysis: From molecular structure to environmental impacts. CHEMOSPHERE 2023; 324:138278. [PMID: 36878364 DOI: 10.1016/j.chemosphere.2023.138278] [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: 10/18/2022] [Revised: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
The excessive use of pesticides and the demand for environmentally friendly compounds have driven the focus to detailed studies of the environmental destination of these compounds. Degradation by hydrolysis of pesticides, when released into the soil, can result in the formation of metabolites with potentially adverse effects on the environment. Moving in this direction, we investigated the mechanism of acid hydrolysis of the herbicide ametryn (AMT) and predicted the toxicities of metabolites through experimental and theoretical approaches. The formation of ionized hydroxyatrazine (HA) occurs with the release of the SCH3- group and the addition of H3O+ to the triazine ring. The tautomerization reactions privileged the conversion of AMT into HA. Furthermore, the ionized HA is stabilized by an intramolecular reaction that provides the molecule in two tautomeric states. Experimentally, the hydrolysis of AMT was obtained under acidic conditions and at room temperature with HA as the main product. HA was isolated in a solid state through its crystallization as organic counterions. The mechanism of conversion of AMT to HA and the experimental investigation of the reaction kinetics allowed us to determine the dissociation of CH3SH as the rate-controlling step in the degradation process that culminates in a half-life between 7 and 24 months under typical acid soil conditions of the Brazilian Midwest - region with strong agricultural and livestock vocation. The keto and hydroxy metabolites showed substantial thermodynamic stability and a decrease in toxicity compared to AMT. We hope that this comprehensive study will support the understanding of the degradation of s-triazine-based pesticides.
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Affiliation(s)
- Bruno Ramos
- Research Group in Advanced Oxidation Processes (AdOx), Department of Chemical Engineering, Escola Politécica, University of São Paulo, São Paulo, 05088000, Brazil.
| | - Wesley F Vaz
- Theoretical and Structural Chemistry Group, Goiás State University, 75132-903, Anápolis, Brazil
| | - Luan F Diniz
- Medicine and Cosmetic Quality Control Laboratory, Pharmaceutical Products Department, Pharmacy Faculty, Federal University of Minas Gerais, 31270-901, Belo Horizonte, Brazil
| | - Flavio O Sanches Neto
- Institute of Chemistry, University of Brasília, Postal Box 4478, 70904-970, Brasília, Brazil; Laboratory for Modeling of Physical and Chemical Transformations, Theoretical and Structural Chemistry Group, Goiás State University, 75132-903, Anápolis, Brazil
| | - Julio C O Ribeiro
- Laboratory for Modeling of Physical and Chemical Transformations, Theoretical and Structural Chemistry Group, Goiás State University, 75132-903, Anápolis, Brazil
| | - Valter H Carvalho-Silva
- Institute of Chemistry, University of Brasília, Postal Box 4478, 70904-970, Brasília, Brazil; Laboratory for Modeling of Physical and Chemical Transformations, Theoretical and Structural Chemistry Group, Goiás State University, 75132-903, Anápolis, Brazil.
| | - Antonio Carlos S C Teixeira
- Research Group in Advanced Oxidation Processes (AdOx), Department of Chemical Engineering, Escola Politécica, University of São Paulo, São Paulo, 05088000, Brazil.
| | - Caue Ribeiro
- National Nanotechnology Laboratory for Agribusiness (LNNA), EMBRAPA Instrumentation, 13560-970, São Carlos, SP, Brazil
| | - Hamilton B Napolitano
- Theoretical and Structural Chemistry Group, Goiás State University, 75132-903, Anápolis, Brazil
| | - Paulo S Carvalho
- Physics Institute, Federal University of Mato Grosso do Sul, 79074-460, Campo Grande, MS, Brazil.
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Effective Electrochemiluminescence Aptasensor for Detection of Atrazine Residue. SENSORS 2022; 22:s22093430. [PMID: 35591119 PMCID: PMC9105573 DOI: 10.3390/s22093430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 12/01/2022]
Abstract
According to the chemiluminescence characteristics of the luminol-hydrogen peroxide (H2O2) system, this work designed a novel and effective electrochemiluminescence (ECL) aptasensor to detect atrazine (ATZ) rapidly. Silver nanoparticles (AgNPs) could effectively catalyze the decomposition of H2O2 and enhance the ECL intensity of the luminol-H2O2 system. Once ATZ was modified on the aptasensor, the ECL intensity was significantly weakened because of the specific combination between ATZ and its aptamer. Therefore, the changes in ECL intensity could be used to detect the concentration of ATZ. Under optimal detecting conditions, the aptasensor had a wide linear range from 1 × 10−3 ng/mL to 1 × 103 ng/mL and a low limit of detection (3.3 × 10−4 ng/mL). The designed aptasensor had the advantages of good stability, reproducibility, and specificity. The aptasensor could be used to detect the ATZ content of tap water, soil, and cabbage and had satisfactory results. This work effectively constructs a novel, effective, and rapid ECL aptasensor for detecting ATZ in actual samples.
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Pecev-Marinković E, Miletić A, Tošić S, Pavlović A, Kostic D, Mišić IR, Dekić V. Optimization and validation of the kinetic spectrophotometric method for quantitative determination of the pesticide atrazine and its application in infant formulae and cereal-based baby food. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:5424-5431. [PMID: 31077389 DOI: 10.1002/jsfa.9803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/06/2019] [Accepted: 05/07/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Pesticides are potentially toxic to humans and can produce both acute and chronic health effects, depending on the quantity and the ways in which a person is exposed. Exposure to pesticides can cause serious health problems. Infants and young children are particularly sensitive to these contaminants because their brains and organ systems are not fully developed. For this reason, it is important to determine the quantities of pesticides in baby food. RESULTS The aim of this study was to develop a kinetic-spectrophotometric method for atrazine determination and to apply it to determine pesticide in baby-food samples, using solid-phase extraction (SPE) followed by the kinetic-spectrophotometric method and the high-performance liquid chromatography (HPLC) method. This method is based on the inhibition effect of atrazine (the oxidation of sulfanilic acid (SA) by hydrogen peroxide in the alkaline medium in the presence of the Co2+ ion). Under the experimental conditions used, atrazine showed a linear dynamic range of 0.5 to 5.0 μg mL-1 , and from 5.0 to 70.00 μg mL-1 with relative standard deviations (RSD) from 1.91% to 9.41%. The limit of detection and the limit of quantification were 0.074 and 0.225 μg mL-1 , respectively. The kinetic method was successfully applied to determine the atrazine concentration in spiked samples after SPE of samples. High-performance liquid chromatography was used to verify the results. CONCLUSION The proposed method is highly sensitive, simple, easy, requires cheap reagents, and leads to good recovery levels. It is linear, precise, and accurate. It can be used successfully for the routine analysis of atrazine in infant formulae and cereal-based food samples. © 2019 Society of Chemical Industry.
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Affiliation(s)
| | - Ana Miletić
- Faculty of Sciences and Mathematics, Department of Chemistry, University of Niš, Niš, Serbia
| | - Snežana Tošić
- Faculty of Sciences and Mathematics, Department of Chemistry, University of Niš, Niš, Serbia
| | - Aleksandra Pavlović
- Faculty of Sciences and Mathematics, Department of Chemistry, University of Niš, Niš, Serbia
| | - Danijela Kostic
- Faculty of Sciences and Mathematics, Department of Chemistry, University of Niš, Niš, Serbia
| | - Ivana Rašić Mišić
- Faculty of Sciences and Mathematics, Department of Chemistry, University of Niš, Niš, Serbia
| | - Vidoslav Dekić
- Faculty of Science and Mathematics, Department of Chemistry, University of Priština, Lole Ribara 29, Serbia
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A magnetic graphene-like MoS 2 nanocomposite for simultaneous preconcentration of multi-residue herbicides prior to UHPLC with ion trap mass spectrometric detection. Mikrochim Acta 2019; 186:486. [PMID: 31267303 DOI: 10.1007/s00604-019-3536-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 05/22/2019] [Indexed: 10/26/2022]
Abstract
A magnetic graphene-like molybdenum disulfide nanocomposite was prepared by liquid-phase exfoliation and hydrothermal synthesis. The morphology, structure, and magnetic behavior of the nanocomposite were characterized by X-ray diffraction, FTIR spectroscopy, thermogravimetric analysis, vibrating sample magnetometry, scanning electron microscopy and transmission electron microscopy. The nanocomposite was employed as a sorbent for magnetic solid-phase extraction (MSPE) of eight triazine and ten sulfonylurea herbicides from environmental water and corn samples. Specifically, this was studied with cyanazine, simetryn, atrazine, methoprotryne, ametryn, prometryn, terbutryn, dipropetryn, metsulfuron-methyl, sulfometuron-methyl, amidosulfuron, rimsulfuron, nicosulfuron, bensulfuron-methyl, halosulfuron-methyl, pyrazosulfuron-ethyl, chlorimuron-ethyl, and cyclosulfamuron. The parameters affecting extraction efficiency (sorbent amount, pH value of the sample, extraction and elution conditions) were studied and optimized. Following MSPE, the multi-residue herbicides were quantified by ultra-high performance liquid chromatography combined with ion trap mass spectrometry and electrospray ionization. The limits of detection range between 20 and 170 ng·L-1. The extraction recoveries of eighteen herbicides from corn samples were in the range between of 64.7% and 103.1%, with RSDs of <17.6%. Graphical abstract Schematic presentation of magnetic graphene-like MoS2 nanocomposite as an absorbent for simultaneous preconcentration of eight triazine and ten sulfonylurea herbicides in corn and water prior to ultra-high performance liquid chromatography (UHPLC) with ion trap mass spectrometry detection.
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Khoshnam F, Zargar B, Moghadam MR. Adsorption and removal of ametryn using graphene oxide nano-sheets from farm waste water and optimization using response surface methodology. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2019. [DOI: 10.1007/s13738-019-01621-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Optofluidic Technology for Water Quality Monitoring. MICROMACHINES 2018; 9:mi9040158. [PMID: 30424092 PMCID: PMC6187826 DOI: 10.3390/mi9040158] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 03/25/2018] [Accepted: 03/26/2018] [Indexed: 12/14/2022]
Abstract
Water quality-related incidents are attracting attention globally as they cause serious diseases and even threaten human lives. The current detection and monitoring methods are inadequate because of their long operation time, high cost, and complex process. In this context, there is an increasing demand for low-cost, multiparameter, real-time, and continuous-monitoring methods at a higher temporal and spatial resolution. Optofluidic water quality sensors have great potential to satisfy this requirement due to their distinctive features including high throughput, small footprint, and low power consumption. This paper reviews the current development of these sensors for heavy metal, organic, and microbial pollution monitoring, which will breed new research ideas and broaden their applications.
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Liu C, Dou X, Zhang L, Li Q, Qin J, Duan Y, Yang M. Determination of triazine herbicides and their metabolites in multiple medicinal parts of traditional Chinese medicines using streamlined pretreatment and UFLC-ESI-MS/MS. CHEMOSPHERE 2018; 190:103-113. [PMID: 28985533 DOI: 10.1016/j.chemosphere.2017.09.085] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 09/11/2017] [Accepted: 09/18/2017] [Indexed: 06/07/2023]
Abstract
A rapid, sensitive, and reliable ultra-fast liquid chromatography combined with electrospray ionization tandem mass spectrometry (UFLC-ESI-MS/MS) method was established and applied to simultaneous determination of 31 triazine herbicides and their metabolites in multiple medicinal parts of traditional Chinese medicines (TCMs). A streamlined pretreatment approach using one-step extraction and dilution was proposed, which provided high-throughput processing, excellent recovery, and negligible interference. Afterwards, multiple-reaction monitoring (MRM) and information-dependent acquisition (IDA) triggered enhanced product ion spectra (EPI) was adopted to identify and quantify the targets in a single analysis. The optimized method was then validated according to the guidelines of the European Commission for the following parameters: Matrix effects, specificity, accuracy, precision, linearity, range, and stability. The LOD and LOQ for the 31 triazine herbicides were 0.1-10 μg kg-1 and 0.5-25 μg kg-1, respectively. Recoveries at three concentration levels were within 67.9-120.3% with an associated precision RSD <20%. Using the proposed approach, trazines herbicides were determined from 44 commercially available TCMs. The detection rate of triazine herbicides residues was 15.9% of the total samples. Among them, atrazine, simeton, and simetryn were found in the radix, herba, and seed TCMs with values far below the referenced maximum residue limits (MRLs), but no residues were detected in either the flos or fructus. Taken together, this method has the potential to provide a means for triazines screening in extensive matrices, thereby laying the foundation for pesticide registration on TCMs. Moreover, it has the potential to guide further triazine residue control in TCMs.
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Affiliation(s)
- Congmin Liu
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100193, China
| | - Xiaowen Dou
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100193, China
| | - Lei Zhang
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100193, China
| | - Qian Li
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100193, China
| | - Jia'an Qin
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100193, China
| | - Yaping Duan
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100193, China; College of Traditional Chinese Medicine, Jilin Agricultural University, Changchun, 130118, China
| | - Meihua Yang
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100193, China.
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Magnetical hollow fiber bar collection of extract in homogenous ionic liquid microextraction of triazine herbicides in water samples. Anal Bioanal Chem 2017; 409:2569-2579. [DOI: 10.1007/s00216-017-0201-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 01/06/2017] [Accepted: 01/10/2017] [Indexed: 01/02/2023]
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Yılmaz E, Özgür E, Bereli N, Türkmen D, Denizli A. Plastic antibody based surface plasmon resonance nanosensors for selective atrazine detection. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 73:603-610. [PMID: 28183651 DOI: 10.1016/j.msec.2016.12.090] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 12/06/2016] [Accepted: 12/19/2016] [Indexed: 12/25/2022]
Abstract
This study reports a surface plasmon resonance (SPR) based affinity sensor system with the use of molecular imprinted nanoparticles (plastic antibodies) to enhance the pesticide detection. Molecular imprinting based affinity sensor is prepared by the attachment of atrazine (chosen as model pesticide) imprinted nanoparticles onto the gold surface of SPR chip. Recognition element of the affinity sensor is polymerizable form of aspartic acid. The imprinted nanoparticles were characterized via FTIR and zeta-sizer measurements. SPR sensors are characterized with atomic force microscopy (AFM), scanning electron microscopy (SEM), Fourier transform infrared spectrophotometry (FTIR) and contact angle measurements. The imprinted nanoparticles showed more sensitivity to atrazine than the non-imprinted ones. Different concentrations of atrazine solutions are applied to SPR system to determine the adsorption kinetics. Langmuir adsorption model is found as the most suitable model for this affinity nanosensor system. In order to show the selectivity of the atrazine-imprinted nanoparticles, competitive adsorption of atrazine, simazine and amitrole is investigated. The results showed that the imprinted nanosensor has high selectivity and sensitivity for atrazine.
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Affiliation(s)
- Erkut Yılmaz
- Department of Chemistry, Aksaray University, 68100 Aksaray, Turkey
| | - Erdoğan Özgür
- Department of Chemistry, Hacettepe University, 06800 Ankara, Turkey
| | - Nilay Bereli
- Department of Chemistry, Hacettepe University, 06800 Ankara, Turkey
| | - Deniz Türkmen
- Department of Chemistry, Hacettepe University, 06800 Ankara, Turkey
| | - Adil Denizli
- Department of Chemistry, Hacettepe University, 06800 Ankara, Turkey.
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Preparation of a Co-doped hierarchically porous carbon from Co/Zn-ZIF: An efficient adsorbent for the extraction of trizine herbicides from environment water and white gourd samples. Talanta 2016; 152:321-8. [DOI: 10.1016/j.talanta.2016.02.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 01/24/2016] [Accepted: 02/01/2016] [Indexed: 11/17/2022]
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Khodayar MJ, Namdar F, Hojati S, Landi A, Nazari Khorasgani Z, Alamolhoda S. Removal of Ametryn From Aqueous Solutions With Zeolite Nanoparticles Optimized Using the Box-Behnken Design. Jundishapur J Nat Pharm Prod 2016. [DOI: 10.17795/jjnpp-28749] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Wei D, Huang ZH, Wang S, Guo Z, Li J. Determination of Herbicides in Milk Using Vortex-Assisted Surfactant-Enhanced Emulsification Microextraction Based on the Solidification of a Floating Organic Droplet. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0180-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Schürner HKV, Seffernick JL, Grzybkowska A, Dybala-Defratyka A, Wackett LP, Elsner M. Characteristic isotope fractionation patterns in s-triazine degradation have their origin in multiple protonation options in the s-triazine hydrolase TrzN. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:3490-8. [PMID: 25688667 DOI: 10.1021/es5055385] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
s-Triazine herbicides (atrazine, ametryn) are groundwater contaminants which may undergo microbial hydrolysis. Previously, inverse nitrogen isotope effects in atrazine degradation by Arthrobacter aurescens TC1 (i) delivered highly characteristic (13C/12C, 15N/14N) fractionation trends for pathway identification and (ii) suggested that the s-triazine ring nitrogen was protonated in the enzyme s-triazine hydrolase (TrzN) where (iii) TrzN crystal structure and mutagenesis indicated H+-transfer from the residue E241. This study tested the general validity of these conclusions for atrazine and ametryn with purified TrzN and a TrzN-E241Q site-directed mutant. TrzN-E241Q lacked activity with ametryn; otherwise, degradation consistently showed normal carbon isotope effects (εcarbon=-5.0‰±0.2‰ (atrazine/TrzN), εcarbon=-4.2‰±0.5‰ (atrazine/TrzN-E241Q), εcarbon=-2.4‰±0.3‰ (ametryn/TrzN)) and inverse nitrogen isotope effects (εnitrogen=2.5‰±0.1‰ (atrazine/TrzN), εnitrogen=2.1‰±0.3‰ (atrazine/TrzN-E241Q), εnitrogen=3.6‰±0.4‰ (ametryn/TrzN)). Surprisingly, TrzN-E241Q therefore still activated substrates through protonation implicating another proton donor besides E241. Sulfur isotope effects were larger in enzymatic (εsulfur=-14.7‰±1.0‰, ametryn/TrzN) than in acidic ametryn hydrolysis (εsulfur=-0.2‰±0.0‰, pH 1.75), indicating rate-determining C-S bond cleavage in TrzN. Our results highlight a robust inverse 15N/14N fractionation pattern for identifying microbial s-triazine hydrolysis in the environment caused by multiple protonation options in TrzN.
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Affiliation(s)
- Heide K V Schürner
- †Institute of Groundwater Ecology, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Bavaria, Germany
| | - Jennifer L Seffernick
- ‡Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, 1479 Gortner Avenue, St. Paul, Minnesota 55108, United States
| | - Anna Grzybkowska
- §Institute of Applied Radiation Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
| | - Agnieszka Dybala-Defratyka
- §Institute of Applied Radiation Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
| | - Lawrence P Wackett
- ‡Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, 1479 Gortner Avenue, St. Paul, Minnesota 55108, United States
| | - Martin Elsner
- †Institute of Groundwater Ecology, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Bavaria, Germany
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Grilo EC, Lima MS, Cunha LR, Gurgel CS, Clemente HA, Dimenstein R. Effect of maternal vitamin A supplementation on retinol concentration in colostrum. JORNAL DE PEDIATRIA (VERSÃO EM PORTUGUÊS) 2015. [DOI: 10.1016/j.jpedp.2014.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Grilo EC, Lima MSR, Cunha LRF, Gurgel CSS, Clemente HA, Dimenstein R. Effect of maternal vitamin A supplementation on retinol concentration in colostrum. J Pediatr (Rio J) 2015; 91:81-6. [PMID: 25193595 DOI: 10.1016/j.jped.2014.05.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 05/09/2014] [Accepted: 05/14/2014] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE To investigate the effect of vitamin A supplementation on the retinol concentration in colostrum under fasting and postprandial conditions. METHODS This was a quasi-experimental study, with before and after assessments, conducted with 33 patients treated at a public maternity hospital. Blood and colostrum samples were collected under fasting conditions in the immediate postpartum period. A second colostrum collection occurred two hours after the first meal of the day, at which time a mega dose of 200,000 IU of retinyl palmitate was administered. On the following day, the colostrum was collected again under fasting and postprandial conditions. Serum and colostrum retinol concentrations were determined by high performance liquid chromatography. RESULTS The serum retinol concentration was 37.3 (16.8-62.2) μg/dL, indicating adequate nutritional status. The colostrum retinol concentration before supplementation was 46.8 (29.7-158.9) μg/dL in fasting and 67.3 (31.1-148.7) μg/dL in postprandial condition (p < 0.05), showing an increase of 43.8%. After supplementation, the values were 89.5 (32.9-264.2) μg/dL and 102.7 (37.3-378.3) μg/dL in fasting and postprandial conditions, respectively (p < 0.05), representing an increase of 14.7%. CONCLUSIONS This study demonstrated that maternal supplementation with high doses of vitamin A in postpartum resulted in a significant increase of the retinol concentration in colostrum under fasting conditions, with an even greater increase after a meal.
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Affiliation(s)
- Evellyn C Grilo
- Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brazil.
| | - Mayara S R Lima
- Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brazil.
| | - Lahyana R F Cunha
- Universidade Federal de Campina Grande (UFCG), Campina Grande, PB, Brazil
| | | | - Heleni A Clemente
- Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brazil
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Reindl AR, Falkowska L, Grajewska A. Chlorinated herbicides in fish, birds and mammals in the Baltic Sea. WATER, AIR, AND SOIL POLLUTION 2015; 226:276. [PMID: 26246644 PMCID: PMC4519634 DOI: 10.1007/s11270-015-2536-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Accepted: 07/07/2015] [Indexed: 05/13/2023]
Abstract
The aim of the present work was to determine the concentration levels, as well as accumulation and magnification coefficients, of triazine derivatives in herring gulls and Baltic grey seals 11 years after a ban on their use in the EU and eight after their exclusion in Poland. Dead birds were collected in the coastal zone of the Gulf of Gdansk in the years 2010-2012. The grey seals, on the other hand, were from before 2007, when s-triazine derivatives were still in use. Triazine herbicides (atrazine, simazine, propazine, terbutrine, prometrone, prometrine and ametrine) were found in the muscles and livers of birds and mammals and also in fish. The obtained results indicated the presence of all the assayed triazines in whole Baltic herring and their livers, while fish muscles were found to be free of prometrone and ametrine. In the muscles and liver of the grey seal, no ametrine, propazine or terbutrine were found, while prometrine was found in the liver of only one specimen. Research showed that simazine did not accumulate and magnify in marine birds and mammals. Atrazine became accumulated in the liver of birds and mammals while magnification was determined in their muscles. The accumulation of ametrine was found in the muscles of seals.
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Affiliation(s)
- Andrzej R. Reindl
- Department of Marine Chemistry and Environmental Protection, Faculty of Oceanography and Geography, University of Gdansk, Pilsudskiego 46, 81-387 Gdynia, Poland
| | - Lucyna Falkowska
- Department of Marine Chemistry and Environmental Protection, Faculty of Oceanography and Geography, University of Gdansk, Pilsudskiego 46, 81-387 Gdynia, Poland
| | - Agnieszka Grajewska
- Department of Marine Chemistry and Environmental Protection, Faculty of Oceanography and Geography, University of Gdansk, Pilsudskiego 46, 81-387 Gdynia, Poland
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Determination of triazine herbicides in fresh vegetables by dynamic microwave-assisted extraction coupled with homogeneous ionic liquid microextraction high performance liquid chromatography. Anal Bioanal Chem 2014; 407:1753-62. [DOI: 10.1007/s00216-014-8393-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 11/28/2014] [Accepted: 12/04/2014] [Indexed: 11/26/2022]
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18
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Pipette-tip solid-phase extraction by use of a sol–gel hybrid adsorbent: a new pretreatment strategy for rapid screening of cucumbers for cyanazine and atrazine. Anal Bioanal Chem 2014; 407:1231-9. [DOI: 10.1007/s00216-014-8336-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 10/03/2014] [Accepted: 11/10/2014] [Indexed: 11/29/2022]
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Zhang L, Wang Z, Li N, Yu A, Zhang H. Ionic liquid-based foam flotation followed by solid phase extraction to determine triazine herbicides in corn. Talanta 2014; 122:43-50. [DOI: 10.1016/j.talanta.2014.01.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Revised: 01/20/2014] [Accepted: 01/23/2014] [Indexed: 11/16/2022]
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Rahbar N, Parham H. Carbon paste electrode modified with cuo-nanoparticles as a probe for square wave voltammetric determination of atrazine. Jundishapur J Nat Pharm Prod 2014; 8:118-24. [PMID: 24624200 PMCID: PMC3941897 DOI: 10.17795/jjnpp-9985] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2013] [Revised: 04/25/2013] [Accepted: 05/05/2013] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Atrazine (ATZ) is a widely used herbicide in most countries because of its low cost and good selectivity. The concentration of ATZ that the EPA considers safe to consume in drinking water is 3 ppb. Therefore, recently, there have been concerns about its determination in trace levels. This compound is not electro-active, so in this research indirect electrochemical method for its detection in low levels was proposed. OBJECTIVES The main aim of this study is the indirect determination of ATZ in water samples by voltammetry using nano-particle modified electrode. MATERIALS AND METHODS A nano-CuO modified carbon paste electrode (NMCPE) is constructed and its application for indirect square wave voltammetric (SWV) detection of ATZ is reported. The sensing performance mechanism of the nano-CuO modified carbon paste electrode toward atrazine is due to complexation of the analyte with Cu (II) ion. The peak current for copper (II) reduction decreases with increase in the ATZ concentration and is monitored for its determination. Instrumental and chemical parameters influencing the detection of ATZ were optimized. RESULTS The results revealed that decrease in peak current was proportional to ATZ concentration over the range of 5-75 ng/mL. The limit of detection (LOD) and limit of quantification (LOQ) were 2 ng/mL and 5.6 ng/mL (n = 20), respectively. The relative standard deviation (n = 10) for the determination of 10 and 50 ng/mL of ATZ solution was estimated as 4.9% and 4.2 %, respectively. CONCLUSIONS This easily fabricated electrode together with the fast and sensitive SW voltammetry was successfully applied for the determination of concentration of ATZ at trace levels, in different water samples.
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Affiliation(s)
- Nadereh Rahbar
- Nanotechnology Research Center, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IR Iran ; Department of Medicinal Chemistry, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IR Iran
| | - Hooshang Parham
- Department of Chemistry, Shahid Chamran University, Ahvaz, IR Iran
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Du Y, Zhao L, Zhang Y. Roles of TaON and Ta(3)N(5) in the visible-Fenton-like degradation of atrazine. JOURNAL OF HAZARDOUS MATERIALS 2014; 267:55-61. [PMID: 24413052 DOI: 10.1016/j.jhazmat.2013.12.042] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2013] [Revised: 11/26/2013] [Accepted: 12/14/2013] [Indexed: 06/03/2023]
Abstract
In this study, the roles of TaON and Ta3N5 in the degradation of atrazine by the visible-Fenton-like system were examined in detail. The TaON and Ta3N5 samples prepared by the nitridation of Ta2O5 and characterized by XRD, DRS, BET and PL analyses. The results showed that the TaON sample had weaker absorption in the visible region but higher specific surface area than the Ta3N5 sample. The degradation rate of atrazine in visible-TaON-Fenton-like system was 2.64 times than that in visible-Ta3N5-Fenton-like system. Both Fe(2+) and H2O2 could be reduced by eCB (electrons in the conduction band) in TaON or Ta3N5, while atrazine could not be oxidized by hVB (holes in the valance band). OH is the active species for the degradation of atrazine in visible-TaON/Ta3N5-Fenton-like systems. Majority of OH originated from Fenton reaction. After Fe(3+) was reduced by eCB to Fe(2+), Fe(2+) reacted quickly with H2O2 to generate OH. In addition, by capturing eCB, a little of H2O2 was reduced to yield OH, which contributed a small fraction of atrazine degradation. Based on the experimental results, the roles of TaON and Ta3N5 in the visible-Fenton-like system were proposed. And the higher photocatalytic activity of TaON than Ta3N5 was suggested to be due to the higher separation efficiency of electrons and holes, which may be related to the larger specific surface area.
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Affiliation(s)
- Yingxun Du
- Nanjing Institute of Geography and Limnology, State Key Laboratory of Lake Science and Environment, Chinese Academy of Sciences, Nanjing 210008, China.
| | - Lu Zhao
- Nanjing Institute of Geography and Limnology, State Key Laboratory of Lake Science and Environment, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yuanyuan Zhang
- Nanjing Institute of Geography and Limnology, State Key Laboratory of Lake Science and Environment, Chinese Academy of Sciences, Nanjing 210008, China
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Fernández-Gómez C, López-López JA, Matamoros V, Díez S, García-Vargas M, Moreno C. Atmospheric influence on the distribution of organic pollutants in the Guadalquivir River estuary, SW Spain. ENVIRONMENTAL MONITORING AND ASSESSMENT 2013; 185:3209-3218. [PMID: 23010894 DOI: 10.1007/s10661-012-2784-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Accepted: 07/05/2012] [Indexed: 06/01/2023]
Abstract
In the lower Guadalquivir river basin, a system stressed by a wide variety of anthropogenic activities, eight pesticides (four triazines, two chloroacetanilide herbicides, one organochlorine, and one organophosphorus insecticide); and four emerging pollutants (two personal care products, one organophosphorous flame retardant, and one xanthine alkaloid) were analyzed in river water during a 2-year monitoring program, and after rain episodes. Samples were extracted using the solid phase extraction (SPE) technique prior to determination of compounds using gas chromatograph coupled to a mass spectrometer detector. Except for caffeine, recoveries were mostly above 80 %, while limits of detection and quantification were in the low nanograms per liter level (except for dimethoate). Terbuthylazine, simazine (triazine herbicides), and dimethoate (organophosphorus insecticide), present in agrochemicals, were predominant in the river water, although concentrations were below the quality standards established by the EU Water-Framework-Directive. A general trend to increase concentration was observed after rain events, in particular for pesticides, possibly as a consequence of surface runoff.
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Affiliation(s)
- Cristal Fernández-Gómez
- Environmental Chemistry Department, Institute of Environmental Assessment and Water Research, IDÆA-CSIC, 08034 Barcelona, Spain
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Tiwari N, Asthana A, Upadhyay K. A sensitive spectrophotometric determination of atrazine in micellar medium and its application in environmental samples. RESEARCH ON CHEMICAL INTERMEDIATES 2012. [DOI: 10.1007/s11164-012-0806-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Zhong Q, Su P, Zhang Y, Wang R, Yang Y. In-situ ionic liquid-based microwave-assisted dispersive liquid–liquid microextraction of triazine herbicides. Mikrochim Acta 2012. [DOI: 10.1007/s00604-012-0847-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Shah J, Jan MR, Ara B, Shehzad FUN. Determination of ametryn in sugarcane and ametryn-atrazine herbicide formulations using spectrophotometric method. ENVIRONMENTAL MONITORING AND ASSESSMENT 2012; 184:3463-3468. [PMID: 21713463 DOI: 10.1007/s10661-011-2200-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2011] [Accepted: 06/09/2011] [Indexed: 05/31/2023]
Abstract
A sensitive spectrophotometric method has been developed for determination of ametryn in agricultural samples. The proposed method was based on reaction with pyridine and further coupling with sulfanilic acid to form a colored product. The absorbance was measured at 400 nm with a molar absorptivity of 2.1 x 10(5) L mol(-1) cm(-1). The method shows a linear range from 0.2-20 μg mL(-1) with limit of detection and limit of quantification 0.16 and 0.54 μg mL(-1), respectively. The method has been successfully applied to the determination of ametryn in sugarcane juice and commercial formulations after separation of ametryn from triazine herbicides based on solvent extraction. Recovery values were found to be in the range of 96.0 ± 0.2% to 98.4 ± 0.1%.
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Affiliation(s)
- Jasmin Shah
- Institute of Chemical Sciences, University of Peshawar, Peshawar, K.P.K., Pakistan.
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26
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Wu Q, Feng C, Zhao G, Wang C, Wang Z. Graphene-coated fiber for solid-phase microextraction of triazine herbicides in water samples. J Sep Sci 2011; 35:193-9. [DOI: 10.1002/jssc.201100740] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 09/25/2011] [Accepted: 10/08/2011] [Indexed: 11/08/2022]
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27
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Zhao G, Song S, Wang C, Wu Q, Wang Z. Determination of triazine herbicides in environmental water samples by high-performance liquid chromatography using graphene-coated magnetic nanoparticles as adsorbent. Anal Chim Acta 2011; 708:155-9. [DOI: 10.1016/j.aca.2011.10.006] [Citation(s) in RCA: 195] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2011] [Revised: 10/02/2011] [Accepted: 10/05/2011] [Indexed: 11/24/2022]
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Wu C, Liu Y, Wu Q, Wang C, Wang Z. Combined Use of Liquid–Liquid Microextraction and Carbon Nanotube Reinforced Hollow Fiber Microporous Membrane Solid-Phase Microextraction for the Determination of Triazine Herbicides in Water and Milk Samples by High-Performance Liquid Chromatography. FOOD ANAL METHOD 2011. [DOI: 10.1007/s12161-011-9280-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Shah J, Rasul Jan M, Ara B, Shehzad FUN. Quantification of triazine herbicides in soil by microwave-assisted extraction and high-performance liquid chromatography. ENVIRONMENTAL MONITORING AND ASSESSMENT 2011; 178:111-119. [PMID: 20824333 DOI: 10.1007/s10661-010-1676-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Accepted: 08/23/2010] [Indexed: 05/29/2023]
Abstract
A method for the determination of herbicides residues, triazine (atrazine, metribuzin, ametryn, and terbutryn), in soil samples with high-performance liquid chromatography (HPLC)-UV detection is described. The proposed method is based on microwave-assisted extraction (MAE) of soil samples for 4 min at 80% of 850-W magnetron outputs in the presence of mixture of solvents (methanol/acetonitrile/ethylacetate). Related important factors influencing the MAE efficiency, such as the solvent type and volume, irradiation energy, and time, were optimized in detail. Calibration curve ranges established using HPLC for metribuzin, atrazine, ametryn, and terbutryn are 1.0-19.0, 0.9-18.0, 0.6-11.0, and 0.7-11.0 µg mL( -1), respectively. The limits of detection of metribuzin, atrazine, ametryn, and terbutryn are 0.30, 0.24, 0.16, and 0.20 µg mL( -1) while limits of quantification are 1.0, 0.80, 0.50, and 0.60 µg mL( -1), respectively. A Plackett-Burman factorial design was used as a screening method in order to select the variables that influence MAE extraction. The recoveries of the method at three different spiked levels were assessed by analyzing real soil samples and were found to be in the range of 83.33 ± 0.12-96.33 ± 0.23 with good precision (<8%).
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Affiliation(s)
- Jasmin Shah
- Institute of Chemical Sciences, University of Peshawar, Peshawar, North-West Frontier Province, Pakistan.
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Seccia S, Albrizio S, Fidente P, Montesano D. Development and validation of a solid-phase extraction method coupled to high-performance liquid chromatography with ultraviolet-diode array detection for the determination of sulfonylurea herbicide residues in bovine milk samples. J Chromatogr A 2011; 1218:1253-9. [DOI: 10.1016/j.chroma.2011.01.006] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2010] [Revised: 07/21/2010] [Accepted: 01/02/2011] [Indexed: 11/27/2022]
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31
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Ren R, Wang Y, Zhang R, Gao S, Zhang H, Yu A. Solvent (ionic liquid) impregnated resin-based extraction coupled with dynamic ultrasonic desorption for separation and concentration of four herbicides in environmental water. Talanta 2011; 83:1392-400. [DOI: 10.1016/j.talanta.2010.11.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2010] [Revised: 11/02/2010] [Accepted: 11/11/2010] [Indexed: 11/28/2022]
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Zhang G, Pan J. Simultaneous spectrophotometric determination of atrazine and cyanazine by chemometric methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 78:238-242. [PMID: 20974548 DOI: 10.1016/j.saa.2010.09.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Revised: 09/14/2010] [Accepted: 09/29/2010] [Indexed: 05/30/2023]
Abstract
A spectrophotometric method for the simultaneous determination of two herbicides, atrazine and cyanazine, is described for the first time based on their reaction with p-aminoacetophenone in the presence of pyridine in hydrochloric acid medium. The absorption spectra were measured in the wavelength range of 400-600 nm. The optimized method indicated that individual analytes followed Beer's law in the concentration ranges for atrazine and cyanazine were 0.2-3.5 mg L(-1) and 0.3-5.0 mg L(-1), and the limits of detection for atrazine and cyanazine were 0.099 and 0.15 mg L(-1), respectively. The original and first-derivative absorption spectra of the binary mixtures were performed as a pre-treatment on the calibration matrices prior to the application of chemometric models such as classical least squares (CLS), principal component regression (PCR), partial least squares (PLS). The analytical results obtained by using these chemometric methods were evaluated on the basis of percent relative prediction error and recovery. It was found that the application of PCR and PLS models for first-derivative absorbance data gave the satisfactory results. The proposed methods were successfully applied for the simultaneous determination of the two herbicides in several food samples.
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Affiliation(s)
- Guowen Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, 235, Nanjing East Road, Nanchang 330047, Jiangxi, China.
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Yu ZG, Qin Z, Ji HR, Du X, Chen YH, Pan P, Wang H, Liu YY. Application of SPE Using Multi-Walled Carbon Nanotubes as Adsorbent and Rapid Resolution LC-MS-MS for the Simultaneous Determination of 11 Triazine Herbicides Residues in River Water. Chromatographia 2010. [DOI: 10.1365/s10337-010-1769-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Portugal FC, Pinto ML, Pires J, Nogueira J. Potentialities of polyurethane foams for trace level analysis of triazinic metabolites in water matrices by stir bar sorptive extraction. J Chromatogr A 2010; 1217:3707-10. [DOI: 10.1016/j.chroma.2010.03.044] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Revised: 03/16/2010] [Accepted: 03/24/2010] [Indexed: 10/19/2022]
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Sreedhar M, Reddy TM, Balaji K, Reddy SJ. Electrochemical Reduction Behavior and Polarographic Determination of Methoxy Triazine Herbicides in Environmental Samples. ANAL LETT 2010. [DOI: 10.1080/00032710903408108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Nhung DTT, Phong TK, Watanabe H. Determination of Tricyclazole in Water Using Solid Phase Extraction and Liquid Chromatography. J LIQ CHROMATOGR R T 2009. [DOI: 10.1080/10826070903245839] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Dang T. T. Nhung
- a Physical Chemistry Department , Hanoi University of Pharmacy , Vietnam
| | - Thai K. Phong
- b Department of Bioproduction Environmental Sciences , Kyushu University , Fukuoka, Japan
| | - Hirozumi Watanabe
- c Graduate School of Agriculture, Tokyo University of Agriculture and Technology , Tokyo, Japan
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Santos VVAD, Costa APMD, Soares NKM, Pires JF, Ramalho HMM, Dimenstein R. Effect of storage on retinol concentration of Cobb and Ross strain chicken livers. Int J Food Sci Nutr 2009; 60 Suppl 1:220-31. [DOI: 10.1080/09637480902992862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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38
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Forró E. New gas chromatographic method for the enantioseparation of β-amino acids by a rapid double derivatization technique. J Chromatogr A 2009; 1216:1025-9. [DOI: 10.1016/j.chroma.2008.12.040] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2008] [Revised: 12/15/2008] [Accepted: 12/16/2008] [Indexed: 11/17/2022]
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Barchańska H, Baranowska I. Procedures for analysis of atrazine and simazine in environmental matrices. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2009; 200:53-84. [PMID: 19680611 DOI: 10.1007/978-1-4419-0028-9_3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
There is an ongoing need to monitor soil and trophic chain samples for residues of triazine herbicides, particularly atrazine and simazine, because these herbicides are among the most used members of their class, are toxic, can be persistent, and are widely distributed in the environment. The main purpose of this review is to provide an overview of principle techniques and approaches used in analyzing atrazine, simazine, and other triazine herbicide residues in environmental matrices. The methods covered generally provide low detection limits, acceptable levels of matrix interferences, and are relatively fast and inexpensive. Atrazine and simazine are popular herbicides used to control a variety of broad leaf and grassy weeds in agriculture and on industrial sites. Because they are widely and frequently used, the environmental contamination of these compounds is considerable. Atrazine, simazine, and other triazines have the ability to translocate in ecosystems. When this occurs, it is often necessary to monitor their residue content in soils, vegetation, biota, and water. There is a vast literature available that addresses the extraction and clean-up of soil, vegetation, animal tissue, and animal fluid samples; unfortunately, few of these publications compare the effectiveness of results obtained on similar matrices. In this review we endeavor to review and provide comparative information on methods dedicated to determining residues of atrazine, simazine, and other triazines in several environment matrices: soil, plants, animal tissues, and water.
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Affiliation(s)
- Hanna Barchańska
- Department of Analytical and General Chemistry, The Silesian University of Technology, 7 M Strzody Str, 44-100, Gliwice, Poland.
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40
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Seccia S, Fidente P, Montesano D, Morrica P. Determination of neonicotinoid insecticides residues in bovine milk samples by solid-phase extraction clean-up and liquid chromatography with diode-array detection. J Chromatogr A 2008; 1214:115-20. [DOI: 10.1016/j.chroma.2008.10.088] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2008] [Revised: 10/02/2008] [Accepted: 10/24/2008] [Indexed: 11/16/2022]
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Price RG, Baranowska I, Griffith HMT, Abuknesha RA, Barchanska H. Analysis of herbicides: demonstration of the utility of enzyme immunoassay verification by HPLC. Biomarkers 2008; 11:291-305. [PMID: 16908437 DOI: 10.1080/13547500600625729] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Evidence has accumulated that herbicides in the environment present a significant health hazard to the population. Therefore, the levels of heavily used substances such as atrazine and simazine and their metabolites need to be regularly assessed. The objective was to develop a rapid and simple tube ELISA procedure suitable for use in field studies and non-specialized laboratories. The antisera used were polyclonal antibodies raised in sheep against atrazine or simazine amido caproic acid conjugated to bovine serum albumin. The antibodies were first used to construct a two-step competitive ELISA procedure in 96-well microtitre plates. The 96-well format was then adapted to a coated-tube enzyme immunoassay, by immobilization of hapten-gelatine conjugates on polystyrene tubes. This enabled the colour to be read using a basic spectrophotometer. Soil samples were collected from agricultural and non-agricultural sites in Poland. Atrazine and simazine were extracted by liquid extraction from soil and assayed by tube ELISA. In addition, the samples were extracted by solid-phase extraction before analysis by HPLC. The immunoassays and chemical analysis were carried out by different individuals who were unaware of each other's results, which were then compared at the end of the study. Correlation of the two methods was excellent, with R=98.7 and 81.3 for atrazine and simazine, respectively. The immunoassay yielded the same order of results without having to perform solid-phase extraction before analysis. The study has demonstrated that the simple antigen-coated tube assay provides a cost-effective and valuable screening test. Comparison with the more elaborate, heavily labour-intensive HPLC analysis demonstrated that the results obtained by the simpler enzyme-immunoassay tests were within the same order.
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Affiliation(s)
- R G Price
- School of Biomedical and Health Sciences, Analytical Research Group, Pharmaceutical Science Division, King's College London, University of London, UK.
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42
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Díez C, Barrado E, Marinero P, Sanz M. Orthogonal array optimization of a multiresidue method for cereal herbicides in soils. J Chromatogr A 2008; 1180:10-23. [DOI: 10.1016/j.chroma.2007.12.036] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2007] [Revised: 12/01/2007] [Accepted: 12/05/2007] [Indexed: 11/30/2022]
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Jacomini AE, Bonato PS, Avelar WEP. HPLC Method for the Analysis of Atrazine in Freshwater Bivalves. J LIQ CHROMATOGR R T 2007. [DOI: 10.1081/jlc-120021757] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Analu Egydio Jacomini
- a Departamento de Biologia , Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto‐USP , Ribeirão Preto , Brazil
| | - Pierina Sueli Bonato
- b Faculdade de Ciências Farmacêuticas de Ribeirão Preto‐USP , Av. Café s/n, Ribeirão Preto , CEP , 14040‐903 , Brazil
| | - Wagner Eustáquio Paiva Avelar
- a Departamento de Biologia , Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto‐USP , Ribeirão Preto , Brazil
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Pinto GMF, Jardim ICSF. USE OF SOLID PHASE EXTRACTION AND HPLC FOR DETERMINATION OF HERBICIDE MULTIRESIDUE RECOVERIES IN WATER. J LIQ CHROMATOGR R T 2007. [DOI: 10.1081/jlc-120003427] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- G. M. F. Pinto
- a Instituto de Química , Universidade Estadual de Campinas , Cx. Postal 6154, 13083-970, Campinas, S.P., Brazil
| | - I. C. S. F. Jardim
- a Instituto de Química , Universidade Estadual de Campinas , Cx. Postal 6154, 13083-970, Campinas, S.P., Brazil
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Ye C, Zhou Q, Wang X. Improved single-drop microextraction for high sensitive analysis. J Chromatogr A 2007; 1139:7-13. [PMID: 17113592 DOI: 10.1016/j.chroma.2006.10.089] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2006] [Revised: 10/25/2006] [Accepted: 10/30/2006] [Indexed: 11/18/2022]
Abstract
This paper described a simple approach to prepare a small bell-mouthed extraction device for single-drop microextraction (SDME). Analytical sensitivity was improved by increasing the suspended acceptor volume. Because of the increased contact area and the rough inner surface of the extraction device, the stability of drop was markedly increased. The merits of the proposed method were demonstrated by using 1-octanol as extractant and with cyanazine, simazine and atrazine as model compounds. The related parameters and the effect of humic acid were systematically investigated. Under the optimized extraction conditions, the linear range, detection limit (S/N=3) and precision (RSD, n=6) were 0.2-50, 0.06microgL-1, 5.7% for cyanazine, 0.1-25, 0.03microgL-1, 6.7% for simazine, and 0.15-37.5, 0.04microgL-1, 5.0% for atrazine, respectively. The established method was applied to determine the target compounds in four real water samples, and the satisfactory spiked recoveries at two concentration levels were obtained. Moreover, the comparison of the proposed SDME with the traditional SDME was performed. These results indicated that the proposed improvement made SDME be a competitive analytical tool and an alternative of the traditional methods for the analysis of organic pollutants at trace level.
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Affiliation(s)
- Cunling Ye
- School of Chemistry and Environmental Sciences, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang, Henan 453007, China
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Conrad A, Couderchet M, Biagianti-Risbourg S. Analysis of Terbumeton and its Major Metabolites by SPE and DAD-HPLC in Soil Bulk Water. Chromatographia 2006. [DOI: 10.1365/s10337-006-0132-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Cháfer-Pericás C, Herráez-Hernández R, Campíns-Falcó P. On-fibre solid-phase microextraction coupled to conventional liquid chromatography versus in-tube solid-phase microextraction coupled to capillary liquid chromatography for the screening analysis of triazines in water samples. J Chromatogr A 2006; 1125:159-71. [PMID: 16797563 DOI: 10.1016/j.chroma.2006.05.056] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2006] [Revised: 05/17/2006] [Accepted: 05/19/2006] [Indexed: 11/25/2022]
Abstract
This paper compares the advantages and disadvantages of two different configurations for the extraction of triazines from water samples: (1) on-fibre solid-phase microextraction (SPME) coupled to conventional liquid chromatography (LC); and (2) in-tube SPME coupled to capillary LC. In-tube SPME has been effected either with a packed column or with an open capillary column. A critical evaluation of the main parameters affecting the performance of each method has been carried out in order to select the most suitable approach according to the requirements of the analysis. In the on-fibre SPME configuration the fibre coating was polydimethylsiloxane (PDMS)-divinylbenzene (DVB). The limits of detection (LODs) obtained with this approach under the optimized extraction and desorption conditions were between 25 and 125 microg/L. The in-tube SPME approach with a C18 packed column (35 mm x 0.5 mm I.D., 5 microm particle size) connected to a switching micro-valve provided the best sensitivity; under such configuration the LODs were between 0.025 and 0.5 microg/L. The in-tube SPME approach with an open capillary column coated with PDMS (30 cm x 0.25 mm I.D., 0.25 microm of thickness coating) connected to the injection valve provided LODs between 0.1 and 0.5 microg/L. In all configurations UV detection at 230 nm was used. Atrazine, simazine, propazine, ametryn, prometryn and terbutryn were selected as model compounds.
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Affiliation(s)
- C Cháfer-Pericás
- Department of Analytical Chemistry, University of Valencia, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
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Di Muccio A, Fidente P, Barbini DA, Dommarco R, Seccia S, Morrica P. Application of solid-phase extraction and liquid chromatography–mass spectrometry to the determination of neonicotinoid pesticide residues in fruit and vegetables. J Chromatogr A 2006; 1108:1-6. [PMID: 16448655 DOI: 10.1016/j.chroma.2005.12.111] [Citation(s) in RCA: 166] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2005] [Revised: 12/20/2005] [Accepted: 12/20/2005] [Indexed: 10/25/2022]
Abstract
A rapid and simple method for simultaneous analysis of four neonicotinoid insecticides including acetamiprid, imidacloprid, thiacloprid and thiamethoxam in fruit and vegetable matrices has been developed. For instance, ready-to-use cartridges filled with a macroporous diatomaceous material were used to extract in a single step insecticide residues with dichloromethane from aqueous-acetone extracts of fruits and vegetables. The eluate was evaporated, the residue redissolved with methanol and then analyzed by liquid chromatography-mass spectrometry in the electrospray ionization (ESI) positive mode. Average recoveries of the four pesticides were between 74.5 and 105% at both spiking levels 0.1 and 1.0 mg kg(-1) in peach, pear, courgette, celery and apricot. Relative standard deviations (RSDs) were less than 10% for all of the recovery tests. The calculated limits of quantitation (LOQs) (0.1-0.5 mg kg(-1)) were equal or lower then the maximum residue limits (MRLs) established by European legislation (0.1-0.5 mg kg(-1)). The proposed method is fast, easy to perform and could be utilized for monitoring of pesticides residues.
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Affiliation(s)
- Alfonso Di Muccio
- ISS Istituto Superiore di Sanità (National Institute of Health), Viale Regina Elena 299, 00161 Rome, Italy
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Fidente P, Seccia S, Vanni F, Morrica P. Analysis of nicotinoid insecticides residues in honey by solid matrix partition clean-up and liquid chromatography–electrospray mass spectrometry. J Chromatogr A 2005; 1094:175-8. [PMID: 16257305 DOI: 10.1016/j.chroma.2005.09.012] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2005] [Revised: 09/07/2005] [Accepted: 09/09/2005] [Indexed: 11/24/2022]
Abstract
An analytical method for the routine simultaneous determination of four nicotinoid insecticides (acetamiprid, imidacloprid, thiacloprid and thiamethoxam) in commercial multifloral honey was developed. Fortified honey samples, dissolved in water, were cleaned up through Extrelut NT20 column and, finally, insecticides were eluted with dichloromethane. The eluate was evaporated, the residue redissolved in methanol and then analyzed by LC-ESI(+)-MS. Average recoveries of the four analytes were in the range of 76% and 99% at both spiking levels 0.1 and 1.0 mg kg(-1). Relative standard deviations (RSDs) were less than 10% for all of the recovery tests. The detection limits (LODs) of the method ranged from 0.01 to 0.1 mg kg(-1) for the different insecticides studied. The developed method is linear over the range assayed, 0.5-5.0 microg mL(-1), with linear correlation coefficients higher than 0.9993.
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Affiliation(s)
- Paola Fidente
- Dipartimento di Chimica Farmaceutica e Tossicologica, Università degli Studi di Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy
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Multiresidue determination of nicotinoid insecticide residues in drinking water by liquid chromatography with electrospray ionization mass spectrometry. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2005.08.006] [Citation(s) in RCA: 99] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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