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Bhat A, Pomerantz WCK, Arnold WA. Finding Fluorine: Photoproduct Formation during the Photolysis of Fluorinated Pesticides. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:12336-12346. [PMID: 35972505 PMCID: PMC9454825 DOI: 10.1021/acs.est.2c04242] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/03/2022] [Accepted: 08/04/2022] [Indexed: 05/28/2023]
Abstract
The photolysis of pesticides with different fluorine motifs was evaluated to quantify the formation of fluorinated products in buffered aqueous systems, advanced oxidation (AOP) and reduction processes (ARP), and river water. Simulated sunlight quantum yields at pH 7 were 0.0033, 0.0025, 0.0015, and 0.00012 for penoxsulam, florasulam, sulfoxaflor, and fluroxypyr, respectively. The bimolecular rate constants with hydroxyl radicals were 2 to 5.7 × 1010 M-1 s-1 and, with sulfate radicals, 1.6 to 2.6 × 108 M-1 s-1 for penoxsulam, florasulam, and fluroxypyr, respectively. The rate constants of sulfoxaflor were 100-fold lower. Using quantitative 19F-NMR, complete fluorine mass balances were obtained. The maximum fluoride formation was 53.4 and 87.4% for penoxsulam and florasulam under ARP conditions, and 6.1 and 100% for sulfoxaflor and fluroxypyr under AOP conditions. Heteroaromatic CF3 and aliphatic CF2 groups were retained in multiple fluorinated photoproducts. Aryl F and heteroaromatic F groups were readily defluorinated to fluoride. CF3 and CF2 groups formed trifluoroacetate and difluoroacetate, and yields increased under oxidizing conditions. 19F-NMR chemical shifts and coupling analysis provided information on hydrogen loss on adjacent bonds or changes in chirality. Mass spectrometry results were consistent with the observed 19F-NMR products. These results will assist in selecting treatment processes for specific fluorine motifs and in the design of agrochemicals to reduce byproduct formation.
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Affiliation(s)
- Akash
P. Bhat
- Department
of Civil, Environmental, and Geo-, Engineering, University of Minnesota, 500 Pillsbury Dr. SE, Minneapolis, Minnesota 55455, United States
| | - William C. K. Pomerantz
- Department
of Chemistry, 207 Pleasant St. SE, University
of Minnesota, Minneapolis, Minnesota, 55455, United States
| | - William A. Arnold
- Department
of Civil, Environmental, and Geo-, Engineering, University of Minnesota, 500 Pillsbury Dr. SE, Minneapolis, Minnesota 55455, United States
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Prabhu K, Malode SJ, Shetti NP, Kulkarni RM. Analysis of herbicide and its applications through a sensitive electrochemical technique based on MWCNTs/ZnO/CPE fabricated sensor. CHEMOSPHERE 2022; 287:132086. [PMID: 34523434 DOI: 10.1016/j.chemosphere.2021.132086] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 08/16/2021] [Accepted: 08/27/2021] [Indexed: 06/13/2023]
Abstract
The electrochemical performance of linuron (LNR) was studied by fabricating the carbon paste electrode (CPE) using multiwalled carbon nanotubes (MWCNTs) along with zinc oxide (ZnO) nanoparticles (MWCNTs/ZnO/CPE). The influence of electro-kinetic specifications involving steady heterogeneous rate, pH, sweep rate, temperature effect, transfer coefficient, accumulation time, activation energy, as well as the total number of protons and electrons participating in electro-oxidation of LNR has been established using voltammetric techniques like cyclic voltammetry (CV) and square wave voltammetry (SWV). These techniques were applied to investigate LNR in real samples such as soil including water samples. Over the 0.02 μM-0.34 μM ranges, a linear relationship was confirmed along with the limit of detection and quantification (LOD and LOQ) of the LNR. The synthesized ZnO nanoparticles were characterized by scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), and X-ray diffraction (XRD) analysis. The MWCNTs/ZnO/CPE sensor was considered sensitive for LNR detection because the sensor exhibited enhanced catalytic qualities with peak current in the involvement of 0.2 M phosphate buffer solution (PBS) of pH 6.0, attributed to the ultimate sensing performance of the sensor.
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Affiliation(s)
- Keerthi Prabhu
- Centre for Electrochemical Science and Materials, Department of Engineering Chemistry, K.L.E. Institute of Technology, Hubballi, 580027, Karnataka, India
| | - Shweta J Malode
- Centre for Electrochemical Science and Materials, Department of Engineering Chemistry, K.L.E. Institute of Technology, Hubballi, 580027, Karnataka, India.
| | - Nagaraj P Shetti
- School of Advanced Sciences, KLE Technological University, Vidyanagar, Hubballi, 580031, Karnataka, India.
| | - Raviraj M Kulkarni
- Department of Chemistry, K. L. S. Gogte Institute of Technology (Autonomous), affiliated to Visvesvaraya Technological University Belagavi-590008, Karnataka, India
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Shahhoseini F, Azizi A, Egli SN, Bottaro CS. Single-use porous thin film extraction with gas chromatography atmospheric pressure chemical ionization tandem mass spectrometry for high-throughput analysis of 16 PAHs. Talanta 2020; 207:120320. [DOI: 10.1016/j.talanta.2019.120320] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 09/01/2019] [Accepted: 09/03/2019] [Indexed: 01/11/2023]
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4
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Hani YMI, Turies C, Palluel O, Delahaut L, Bado-Nilles A, Geffard A, Dedourge-Geffard O, Porcher JM. Effects of a chronic exposure to different water temperatures and/or to an environmental cadmium concentration on the reproduction of the threespine stickleback (Gasterosteus aculeatus). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 174:48-57. [PMID: 30818260 DOI: 10.1016/j.ecoenv.2019.02.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 01/17/2019] [Accepted: 02/11/2019] [Indexed: 05/12/2023]
Abstract
Knowledge about combined effects of chemicals and temperature on reproductive capacity of fish are rare in literature, especially when it comes to the effects of chronic low-dose chemical exposure combined to the thermal stress. The aim of the study was to evaluate the single and combined effects of temperature (16, 18, 21 °C) and an environmentally relevant concentration of waterborne cadmium (1 µg L-1, nominal concentration) on the reproductive outputs of threespine stickleback (Gasterosteus aculeatus), and their consequences on offspring survival parameters. The high temperature (21 °C) was the only factor that affected parental parameters (gonadosomatic index "GSI", and vitellogenin "VTG" particularly). On females, 21 °C had a stimulating effect on gonadal development evaluated by an early increase, followed by a sharp decrease of GSI, probably indicating gonadal atresia. Promoting effect of temperature was corroborated by an early production of VTG. In vitro fertilization assays showed interesting results, particularly cadmium effects. As it was supposed, high temperature had a negative impact on offspring parameters (significant decrease in survival and an increase of unhatched embryos). Parental exposure to the very low concentration of cadmium had also negative consequences on mortality rate (significant increase) and hatching rate (significant decrease). Our results indicate that in a global warming context, high temperature and its combination with contaminant may impact reproductive capacity of G. aculeatus, by decreasing parental investment (low eggs and/or sperm quality).
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Affiliation(s)
- Younes Mohamed Ismail Hani
- Institut National de l'Environnement Industriel et des Risques (INERIS), UMR-I 02 SEBIO (Stress Environnementaux et Biosurveillance des milieux aquatiques), Verneuil-en-Halatte, France; Université de Reims Champagne-Ardenne (URCA), UMR-I 02 SEBIO (Stress Environnementaux et Biosurveillance des milieux aquatiques), Moulin de la Housse, Reims, France.
| | - Cyril Turies
- Institut National de l'Environnement Industriel et des Risques (INERIS), UMR-I 02 SEBIO (Stress Environnementaux et Biosurveillance des milieux aquatiques), Verneuil-en-Halatte, France
| | - Olivier Palluel
- Institut National de l'Environnement Industriel et des Risques (INERIS), UMR-I 02 SEBIO (Stress Environnementaux et Biosurveillance des milieux aquatiques), Verneuil-en-Halatte, France
| | - Laurence Delahaut
- Université de Reims Champagne-Ardenne (URCA), UMR-I 02 SEBIO (Stress Environnementaux et Biosurveillance des milieux aquatiques), Moulin de la Housse, Reims, France
| | - Anne Bado-Nilles
- Institut National de l'Environnement Industriel et des Risques (INERIS), UMR-I 02 SEBIO (Stress Environnementaux et Biosurveillance des milieux aquatiques), Verneuil-en-Halatte, France
| | - Alain Geffard
- Université de Reims Champagne-Ardenne (URCA), UMR-I 02 SEBIO (Stress Environnementaux et Biosurveillance des milieux aquatiques), Moulin de la Housse, Reims, France
| | - Odile Dedourge-Geffard
- Université de Reims Champagne-Ardenne (URCA), UMR-I 02 SEBIO (Stress Environnementaux et Biosurveillance des milieux aquatiques), Moulin de la Housse, Reims, France
| | - Jean-Marc Porcher
- Institut National de l'Environnement Industriel et des Risques (INERIS), UMR-I 02 SEBIO (Stress Environnementaux et Biosurveillance des milieux aquatiques), Verneuil-en-Halatte, France
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Lee YH, Kim HH, Lee JI, Lee JH, Kang H, Lee JY. Indoor contamination from pesticides used for outdoor insect control. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 625:994-1002. [PMID: 29996466 DOI: 10.1016/j.scitotenv.2018.01.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 01/02/2018] [Accepted: 01/02/2018] [Indexed: 06/08/2023]
Abstract
The present study assessed the indoor level of pesticide residue contamination at a total of 45 dwelling facilities in 5 cities of South Korea from June to November 2014. Pesticide residue contamination was assessed by measuring the frequency and concentration of chlorpyrifos, dichlorvos, and cypermethrin residues in airborne particles, indoor dust, and surface wipes. A preparatory test showed a decreasing tendency in the concentrations of pesticide residues in indoor air over time: from 0.458 to 0.073mg/m3 in dichlorvos for 4weeks and from below 0.050mg/m3 to non-detection in the other substances for 2weeks. Then, pesticide residues were detected indoors 4weeks after outdoor chemical control, implying the infiltration of pesticide particles from outdoors. Airborne particles of dichlorvos were found at a higher level (74.4% of samples at a concentration of 0.053mg/m3), whereas those of the other substances were detected at lower levels (6.1% at 0.002mg/m3 in chlorpyrifos and 9.4% at 0.022mg/m3 in cypermethrin). There was no consistent tendency in the indoor levels of pesticide residue contamination according to dwelling types or indoor height. The indoor levels of dichlorvos residue contamination were lower in industrial districts than in urban or rural districts: 63.9% and 0.013mg/m3 for airborne particles, 13.3% and 0.002μg/g for indoor dust, and 6.7% and 0.001mg/cm2 for surface wipes, respectively. There were no significant differences in the indoor levels of pesticide residue contamination between urban and rural districts. The current study found that most dwelling facilities managed their indoor levels of pesticide residue contamination below permissible exposure limit (PEL, 1.0mg/m3) or threshold limit value (TVL, 0.1mg/m3), whereas some facilities did not. So, we suggest that certain guidelines should be drawn up regarding the indoor environment management.
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Affiliation(s)
- Youn-Hyung Lee
- Department of Horticultural Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Ho-Hyun Kim
- Department of Information, Communication and Technology Convergence, ICT Environment Convergence, Pyeongtaek University, Pyeongtaek 17869, Republic of Korea
| | - Jeong-Il Lee
- Korea Testing & Research Institute, Gwacheon 13810, Republic of Korea
| | - Jeong-Hee Lee
- Korea Testing & Research Institute, Gwacheon 13810, Republic of Korea
| | - Hee Kang
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Jae-Young Lee
- Institute of Life Science & Resources, Kyung Hee University, Yongin 17104, Republic of Korea.
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KIVRAK Ş, GÖKTÜRK T. Çevresel Su Örneklerinde GC/MSD ile Pestisit Analizi ve Metot Validasyonu. ACTA ACUST UNITED AC 2017. [DOI: 10.17100/nevbiltek.321723] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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7
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Khan A, Wang J, Li J, Wang X, Chen Z, Alsaedi A, Hayat T, Chen Y, Wang X. The role of graphene oxide and graphene oxide-based nanomaterials in the removal of pharmaceuticals from aqueous media: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:7938-7958. [PMID: 28111721 DOI: 10.1007/s11356-017-8388-8] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Accepted: 01/04/2017] [Indexed: 05/21/2023]
Abstract
In this review paper, the ill effects of pharmaceuticals (PhAs) on the environment and their adsorption on graphene oxide (GO) and graphene oxide-based (GO-based) nanomaterials have been summarised and discussed. The adsorption of prominent PhAs discussed herein includes beta-blockers (atenolol and propranolol), antibiotics (tetracycline, ciprofloxacin and sulfamethoxazole), pharmaceutically active compounds (carbamazepine) and analgesics such as diclofenac. The adsorption of PhAs strictly depends upon the experimental conditions such as pH, adsorbent and adsorbate concentrations, temperature, ionic strength, etc. To understand the adsorption mechanism and feasibility of the adsorption process, the adsorption isotherms, thermodynamics and kinetic studies were also considered. Except for some cases, GO and its derivatives show excellent adsorption capacities for PhAs, which is crucial for their applications in the environmental pollution cleanup.
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Affiliation(s)
- Ayub Khan
- School of Environment and Chemical Engineering, North China Electric Power University, 102206, Beijing, People's Republic of China
| | - Jian Wang
- School of Environment and Chemical Engineering, North China Electric Power University, 102206, Beijing, People's Republic of China
| | - Jun Li
- School of Environment and Chemical Engineering, North China Electric Power University, 102206, Beijing, People's Republic of China
| | - Xiangxue Wang
- School of Environment and Chemical Engineering, North China Electric Power University, 102206, Beijing, People's Republic of China
| | - Zhongshan Chen
- School of Environment and Chemical Engineering, North China Electric Power University, 102206, Beijing, People's Republic of China
| | - Ahmed Alsaedi
- NAAM Research Group, Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Tasawar Hayat
- NAAM Research Group, Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
- Department of Mathematics, Quaid-I-Azam University, Islamabad, 44000, Pakistan
| | - Yuantao Chen
- Department of Chemistry, Qinghai Normal University, 810008, Xining, Qinghai, People's Republic of China
| | - Xiangke Wang
- School of Environment and Chemical Engineering, North China Electric Power University, 102206, Beijing, People's Republic of China.
- NAAM Research Group, Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions and School for Radiological and Interdisciplinary Sciences, Soochow University, 215123, Suzhou, People's Republic of China.
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8
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Guelfi DRV, Gozzi F, Sirés I, Brillas E, Machulek A, de Oliveira SC. Degradation of the insecticide propoxur by electrochemical advanced oxidation processes using a boron-doped diamond/air-diffusion cell. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:6083-6095. [PMID: 26983915 DOI: 10.1007/s11356-016-6416-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 03/02/2016] [Indexed: 06/05/2023]
Abstract
A solution with 0.38 mM of the pesticide propoxur (PX) at pH 3.0 has been comparatively treated by electrochemical oxidation with electrogenerated H2O2 (EO-H2O2), electro-Fenton (EF), and photoelectro-Fenton (PEF). The trials were carried out with a 100-mL boron-doped diamond (BDD)/air-diffusion cell. The EO-H2O2 process had the lowest oxidation ability due to the slow reaction of intermediates with •OH produced from water discharge at the BDD anode. The EF treatment yielded quicker mineralization due to the additional •OH formed between added Fe2+ and electrogenerated H2O2. The PEF process was the most powerful since it led to total mineralization by the combined oxidative action of hydroxyl radicals and UVA irradiation. The PX decay agreed with a pseudo-first-order kinetics in EO-H2O2, whereas in EF and PEF, it obeyed a much faster pseudo-first-order kinetics followed by a much slower one, which are related to the oxidation of its Fe(II) and Fe(III) complexes, respectively. EO-H2O2 showed similar oxidation ability within the pH range 3.0-9.0. The effect of current density and Fe2+ and substrate contents on the performance of the EF process was examined. Two primary aromatic products were identified by LC-MS during PX degradation.
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Affiliation(s)
- Diego Roberto Vieira Guelfi
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, 549, Av. Senador Filinto Muller 1555, 79070-900, Campo Grande, Mato Grosso do Sul, Brazil
| | - Fábio Gozzi
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, 549, Av. Senador Filinto Muller 1555, 79070-900, Campo Grande, Mato Grosso do Sul, Brazil
| | - Ignasi Sirés
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, c/Martí i Franquès 1-11, 08028, Barcelona, Spain
| | - Enric Brillas
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, c/Martí i Franquès 1-11, 08028, Barcelona, Spain
| | - Amílcar Machulek
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, 549, Av. Senador Filinto Muller 1555, 79070-900, Campo Grande, Mato Grosso do Sul, Brazil
| | - Silvio César de Oliveira
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, 549, Av. Senador Filinto Muller 1555, 79070-900, Campo Grande, Mato Grosso do Sul, Brazil.
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Sousa Da Silva E, Sarakha M, Burrows HD, Wong-Wah-Chung P. Decatungstate anion as an efficient photocatalytic species for the transformation of the pesticide 2-(1-naphthyl)acetamide in aqueous solution. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2016.10.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Khan JA, Shah NS, Khan HM. Decomposition of atrazine by ionizing radiation: Kinetics, degradation pathways and influence of radical scavengers. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.09.064] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Silva TC, dos Santos Pires M, de Castro AA, da Cunha EFF, Caetano MS, Ramalho TC. Molecular insight into the inhibition mechanism of plant and rat 4-hydroxyphenylpyruvate dioxygenase by molecular docking and DFT calculations. Med Chem Res 2015. [DOI: 10.1007/s00044-015-1436-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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12
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Khan JA, Shah NS, Nawaz S, Ismail M, Rehman F, Khan HM. Role of eaq⁻, ·OH and H· in radiolytic degradation of atrazine: a kinetic and mechanistic approach. JOURNAL OF HAZARDOUS MATERIALS 2015; 288:147-157. [PMID: 25725267 DOI: 10.1016/j.jhazmat.2014.11.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2014] [Revised: 11/13/2014] [Accepted: 11/19/2014] [Indexed: 06/04/2023]
Abstract
The degradation of atrazine was investigated in aqueous solution by gamma-ray irradiation. 8.11 μM initial atrazine concentration could be completely removed in N₂ saturated solution by applying 3500 Gy radiation dose at a dose rate of 296 Gy h(-1). Significant removal of atrazine (i.e., 39.4%) was observed at an absorbed dose of 1184 Gy in air saturated solution and the removal efficiency was promoted to 50.5 and 65.4% in the presence of N₂O and N₂ gases, respectively. The relative contributions of hydrated electron, hydroxyl radical and hydrogen radical toward atrazine degradation were determined as ratio of observed dose constant (kobs) and found to be 5: 3: 1 for keaq(-): k·OH: kH·, respectively. The degradation efficiency of atrazine was 69.5, 55.6 and 37.3% at pH 12.1, 1.7 and 5.7, respectively. A degradation mechanism was proposed based on the identified degradation by-products by gas chromatography-mass spectrometry. Taking the relative contributions of oxidative and reductive species to atrazine degradation into account, reductive pathway proved to be a better approach for the radiolytic treatment of atrazine contaminated water.
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Affiliation(s)
- Javed Ali Khan
- Radiation Chemistry Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan.
| | - Noor S Shah
- Radiation Chemistry Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan; Institute of Chemical Sciences, University of Swat, Swat 19130, Pakistan
| | - Shah Nawaz
- Radiation Chemistry Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan
| | - M Ismail
- Radiation Chemistry Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan
| | - Faiza Rehman
- Radiation Chemistry Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan
| | - Hasan M Khan
- Radiation Chemistry Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan.
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Siara L, de Lima F, Cardoso C, Arruda G. Electrochemically pretreated zeolite-modified carbon-paste electrodes for determination of linuron in an agricultural formulation and water. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2014.11.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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15
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Remucal CK. The role of indirect photochemical degradation in the environmental fate of pesticides: a review. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2014; 16:628-53. [PMID: 24419250 DOI: 10.1039/c3em00549f] [Citation(s) in RCA: 119] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Photochemical degradation contributes to the environmental fate of many pesticides in surface waters. A better understanding of the role of direct and indirect photochemical degradation of pesticides is necessary in order to predict their environmental fate and persistence. This review includes all major pesticide classes and focuses on the importance of dissolved organic matter (DOM) as a sensitizer in indirect photodegradation within aquatic systems. Photochemical studies conducted under environmentally relevant conditions (i.e., aqueous solutions with irradiation wavelengths >290 nm) are included. Comparisons are made between observed photodegradation rates in pure or buffered water and in water containing DOM to assess the extent of pesticide susceptibility to DOM-sensitized indirect photolysis. When data is available, the role of specific reactive species in indirect photodegradation is described. While it is possible to assess the relative importance of direct and indirect photodegradation on a pesticide-by-pesticide basis in many cases, it is often difficult to make generalizations based on compound class. Knowledge gaps and inconstancies in the current body of literature are discussed and areas that require additional research are described.
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Affiliation(s)
- Christina K Remucal
- University of Wisconsin-Madison, Department of Civil and Environmental Engineering, 660 N. Park St., Madison, WI, USA.
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16
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Farajzadeh MA, Nouri N, Khorram P. Derivatization and microextraction methods for determination of organic compounds by gas chromatography. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2013.11.006] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Bigus P, Tobiszewski M, Namieśnik J. Historical records of organic pollutants in sediment cores. MARINE POLLUTION BULLETIN 2014; 78:26-42. [PMID: 24300286 DOI: 10.1016/j.marpolbul.2013.11.008] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 10/28/2013] [Accepted: 11/11/2013] [Indexed: 06/02/2023]
Abstract
Analyses of sediment core samples are primary sources of historical pollution trends in aquatic systems. Determining organic compounds, such as POPs, in the dated sediments enables the estimation of their temporal concentration changes and the identification of the contaminant origin in local regions. Wars, large-scale fires, economical transitions, and bans on certain chemicals are reflected in the sediment organic compound concentrations. The high POP concentrations in surficial sediments suggest that these chemicals, even after being banned, remain in the environment. Furthermore, vertical profiles can help in understanding the sedimentation process and in estimating effective countermeasures against pollution. Moreover, studies published during the period 1991-2013 on PAHs, PCBs, OCPs, dioxins and dioxin-like compound concentrations in sediment core samples are reviewed.
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Affiliation(s)
- Paulina Bigus
- Department of Analytical Chemistry, Chemical Faculty, Gdańsk University of Technology (GUT), ul. Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Marek Tobiszewski
- Department of Analytical Chemistry, Chemical Faculty, Gdańsk University of Technology (GUT), ul. Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Jacek Namieśnik
- Department of Analytical Chemistry, Chemical Faculty, Gdańsk University of Technology (GUT), ul. Narutowicza 11/12, 80-233 Gdańsk, Poland
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18
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Dellai A, Dridi D, Sakouhi S, Robert J, Djelal H, Mosrati R, Cherif A, Mansour HB. Cytotoxic effect of chlorpyrifos ethyl and its degradation derivatives by Pseudomonas peli strain isolated from the Oued Hamdoun River (Tunisia). Toxicol Ind Health 2013; 32:707-13. [DOI: 10.1177/0748233713506957] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A bacterium was isolated from the river of Oued Hamdoun (Tunisia), and its phenotypic features, physiological and chemotaxonomic characteristics and phylogenetic analysis of 16S ribosomal RNA sequence revealed it as Pseudomonas peli ( P. peli). Chlorpyrifos ethyl (CP) was used as the sole source of carbon and energy by P. peli, and it was cometabolised in the presence of glucose. CP was completely degraded by P. peli after 96 h of shake incubation. High-performance liquid chromatography analysis indicated that the biodegradation kinetics was not affected by the addition of glucose into the culture medium. In the present study, only transient accumulation of one major no-identified product was observed after 48 h of incubation, with no other persistent metabolites detected. Cytotoxicity of CP, before and after biodegradation with P. peli, was evaluated in vitro using the MTT-colorimetric assay against three human cancer cell lines (A549, lung cell carcinoma, HT29, colon adenocarcinoma and MCF7, breast adenocarcinoma). CP reduced viability of all human cell lines in a dose-dependent manner. Its activity was very remarkable against A549 cell line. However, cytotoxicity strongly decreased in CP obtained after incubation with P. peli. Hence, we conclude that when incubated under appropriate conditions, P. peli has a metabolism that completely detoxifies CP.
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Affiliation(s)
- Afef Dellai
- Laboratoire de Biotechnologie et Valorisation de Bio Géo Ressources, Institut Supérieur de Biotechnologie (LBVBGR-LR11-ES31), BiotechPole de Sidi Thabet, Université de la Manouba, Manouba, Tunisie
- Laboratoire de Pharmacologie des Médicaments Anticancéreux, Institut Bergonie, Université Victor Segalen, Bordeaux, France
| | - Dorra Dridi
- Laboratoire de Biotechnologie et Valorisation de Bio Géo Ressources, Institut Supérieur de Biotechnologie (LBVBGR-LR11-ES31), BiotechPole de Sidi Thabet, Université de la Manouba, Manouba, Tunisie
| | - Seif Sakouhi
- Laboratoire de Biotechnologie et Valorisation de Bio Géo Ressources, Institut Supérieur de Biotechnologie (LBVBGR-LR11-ES31), BiotechPole de Sidi Thabet, Université de la Manouba, Manouba, Tunisie
| | - Jacques Robert
- Laboratoire de Pharmacologie des Médicaments Anticancéreux, Institut Bergonie, Université Victor Segalen, Bordeaux, France
| | - Hayet Djelal
- Ecole des Métiers de l'Environnement, Université Européenne de Bretagne, Rennes, France
| | - Ridha Mosrati
- Laboratoire des Aliments Bioprocédés, Toxicologie, Environ-nements (ABTE-EA 4651), IUT de Caen, Université de Caen Basse-Normandie, Caen, France
| | - Ameur Cherif
- Laboratoire de Biotechnologie et Valorisation de Bio Géo Ressources, Institut Supérieur de Biotechnologie (LBVBGR-LR11-ES31), BiotechPole de Sidi Thabet, Université de la Manouba, Manouba, Tunisie
| | - Hedi Ben Mansour
- Laboratoire de Biotechnologie et Valorisation de Bio Géo Ressources, Institut Supérieur de Biotechnologie (LBVBGR-LR11-ES31), BiotechPole de Sidi Thabet, Université de la Manouba, Manouba, Tunisie
- Laboratoire de Pharmacologie des Médicaments Anticancéreux, Institut Bergonie, Université Victor Segalen, Bordeaux, France
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Farajzadeh MA, Nouri N. Simultaneous derivatization and dispersive liquid–liquid microextraction of anilines in different samples followed by gas chromatography–flame ionization detection. Talanta 2012; 99:1004-10. [DOI: 10.1016/j.talanta.2012.07.089] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2012] [Revised: 07/30/2012] [Accepted: 07/31/2012] [Indexed: 10/28/2022]
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20
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Glassy carbon and boron doped glassy carbon electrodes for voltammetric determination of linuron herbicide in the selected samples. OPEN CHEM 2012. [DOI: 10.2478/s11532-012-0042-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractIn this study the application of home-made unmodified (GC) and bulk modified boron doped glassy carbon (GCB) electrodes for the voltammetric determination of the linuron was investigated. The electrodes were synthesized with a moderate temperature treatment (1000°C). Obtained results were compared with the electrochemical determination of the linuron using a commercial glassy carbon electrode (GC-Metrohm). The peak potential (E p ) of linuron oxidation in 0.1 mol dm−3 H2SO4 as electrolyte was similar for all applied electrodes: 1.31, 1.34 and 1.28 V for GCB, GC and GC-Metrohm electrodes, respectively. Potential of linuron oxidation and current density depend on the pH of supporting electrolyte. Applying GCB and GC-Metrohm electrodes the most intensive electrochemical response for linuron was obtained in strongly acidic solution (0.1 mol dm−3 H2SO4). Applying the boron doped glassy carbon electrode the broadest linear range (0.005–0.1 µmol cm−3) for the linuron determination was obtained. The results of voltammetric determination of the linuron in spiked water samples showed good correlation between added and found amounts of linuron and also are in good agreement with the results obtained by HPLC-UV method. This appears to be the first application of a boron doped glassy carbon electrode for voltammetric determination of the environmental important compounds.
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21
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Array capillary in-tube solid-phase microextraction: A rapid preparation technique for water samples. J Chromatogr A 2012; 1244:69-76. [DOI: 10.1016/j.chroma.2012.05.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 05/03/2012] [Accepted: 05/04/2012] [Indexed: 11/22/2022]
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22
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Farajzadeh MA, Djozan D, Khorram P. Development of a new dispersive liquid–liquid microextraction method in a narrow-bore tube for preconcentration of triazole pesticides from aqueous samples. Anal Chim Acta 2012; 713:70-8. [DOI: 10.1016/j.aca.2011.11.030] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Revised: 11/06/2011] [Accepted: 11/14/2011] [Indexed: 10/15/2022]
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23
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Voltammetric determination of the herbicide Linuron using a tricresyl phosphate-based carbon paste electrode. SENSORS 2011; 12:148-61. [PMID: 22368461 PMCID: PMC3279205 DOI: 10.3390/s120100148] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Revised: 12/05/2011] [Accepted: 12/05/2011] [Indexed: 11/17/2022]
Abstract
This paper summarises the results of voltammetric studies on the herbicide 3-(3,4-dichlorophenyl)-1-methoxy-1-methylurea (Linuron), using a carbon paste electrode containing tricresyl phosphate (TCP-CPE) as liquid binder. The principal experimental conditions, such as the pH effect, investigated in Britton-Robinson buffer solutions (pH 2.0–7.0), the peak characteristics for the analyte of interest, or instrumental parameters for the differential pulse voltammetric mode were optimized for the method. As found out, the best electroanalytical performance of the TCP-CPE was achieved at pH 2.0, whereby the oxidation peak of Linuron appeared at ca. +1.3 V vs. SCE. The analytical procedure developed offers good linearity in the concentration range of 1.25–44.20 μg mL−1 (1.77 × 10−4–5.05 × 10−6 mol L−1), showing—for the first time—the applicability of the TCP-CPE for anodic oxidations in direct voltammetry (without accumulation). The method was then verified by determining Linuron in a spiked river water sample and a commercial formulation and the results obtained agreed well with those obtained by the reference HPLC/UV determination.
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24
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Solventless and solvent-minimized sample preparation techniques for determining currently used pesticides in water samples: A review. Talanta 2011; 86:8-22. [DOI: 10.1016/j.talanta.2011.08.056] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 08/19/2011] [Accepted: 08/28/2011] [Indexed: 11/18/2022]
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25
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Fenoll J, Hellín P, Martínez CM, Flores P, Navarro S. Determination of 48 pesticides and their main metabolites in water samples by employing sonication and liquid chromatography–tandem mass spectrometry. Talanta 2011; 85:975-82. [DOI: 10.1016/j.talanta.2011.05.012] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Revised: 05/04/2011] [Accepted: 05/05/2011] [Indexed: 11/28/2022]
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26
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Development of a new microextraction method based on a dynamic single drop in a narrow-bore tube: Application in extraction and preconcentration of some organic pollutants in well water and grape juice samples. Talanta 2011; 85:1135-42. [DOI: 10.1016/j.talanta.2011.05.044] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2011] [Revised: 05/14/2011] [Accepted: 05/18/2011] [Indexed: 11/18/2022]
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27
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Fenik J, Tankiewicz M, Biziuk M. Properties and determination of pesticides in fruits and vegetables. Trends Analyt Chem 2011. [DOI: 10.1016/j.trac.2011.02.008] [Citation(s) in RCA: 149] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Xie SM, Zhang M, Wang ZY, Yuan LM. Porous metal membranes for solid-phase extraction of polycyclic aromatic hydrocarbons. Analyst 2011; 136:3988-96. [DOI: 10.1039/c1an15245a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Pesticides in water and the performance of the liquid-phase microextraction based techniques. A review. Microchem J 2010. [DOI: 10.1016/j.microc.2010.06.010] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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30
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Trtić-Petrović T, Ðorđević J, Dujaković N, Kumrić K, Vasiljević T, Laušević M. Determination of selected pesticides in environmental water by employing liquid-phase microextraction and liquid chromatography–tandem mass spectrometry. Anal Bioanal Chem 2010; 397:2233-43. [DOI: 10.1007/s00216-010-3725-5] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2010] [Revised: 04/01/2010] [Accepted: 04/06/2010] [Indexed: 11/29/2022]
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31
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El Bakouri H, Usero J, Morillo J, Ouassini A. Adsorptive features of acid-treated olive stones for drin pesticides: equilibrium, kinetic and thermodynamic modeling studies. BIORESOURCE TECHNOLOGY 2009; 100:4147-4155. [PMID: 19409776 DOI: 10.1016/j.biortech.2009.04.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2009] [Revised: 04/01/2009] [Accepted: 04/02/2009] [Indexed: 05/27/2023]
Abstract
The adsorption behavior of drin pesticides from aqueous solution onto acid treated olive stones (ATOS) was investigated using stir bar sorptive extraction and gas chromatography coupled with mass spectroscopy. The effects of sorbent particle size, adsorbent dose, contact time, concentration of pesticide solution and temperature on the adsorption processes were systematically studied in batch shaking sorption experiments. Maximum removal efficiency (94.8%) was reached for aldrin (0.5 mg L(-1)) using the fraction 63-100 microm of ATOS (solid/liquid ratio: 1 g L(-1)). Experimental data were modeled by Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherms. The Freundlich isotherm model (R(2)=0.98-0.99) fitted the equilibrium data better than the Langmuir and D-R isotherm models, with low sum of error values (SE=1.4-9.2%). The mean adsorption free energy derived from the D-R isotherm model (R(2)=0.95-0.99) showed that the adsorption of drin pesticides was taken place by weak physical forces, such as van der Waals forces and hydrogen bonding. The calculated thermodynamic parameters, DeltaH, DeltaS and DeltaG prove that drin pesticides adsorption on ATOS was feasible, spontaneous and exothermic under examined conditions. The pseudo first order, pseudo second order kinetic and the intra-particle diffusion models were used to describe the kinetic data and rate constants were evaluated.
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Affiliation(s)
- Hicham El Bakouri
- Department of Chemical and Environmental Engineering, University of Seville, 41092 Seville, Spain.
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32
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Amaya-Chávez A, López-López E, Galar-Martínez M, Gómez-Oliván LM, García-Fabila MM. Removal of methyl parathion in water, by Dugesia dorotocephala. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2009; 83:334-336. [PMID: 19424652 DOI: 10.1007/s00128-009-9741-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2008] [Accepted: 04/23/2009] [Indexed: 05/27/2023]
Abstract
The aim of this study was to determine the efficiency of Dugesia dorotocephala on Methyl parathion removal. An initial concentration of 1.25 microg mL(-1) of MeP was used to evaluate the removal capacity of planarian. A first-order removal kinetics was obtained with a disappearance rate constant (k(r)) of 0.49 days(-1) and 69% efficiency on contaminant removal. This is significantly different (p < 0.5) from the degradation occurring in control systems, leading us to conclude that D. dorotocephala effectively removes MeP from contaminated water.
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Affiliation(s)
- A Amaya-Chávez
- Departamento de Farmacia de la Facultad de Química, UAEMex., Paseo Tollocan Esq., Paseo Colón, Col., Residencial Colon, CP 50100, Toluca, Estado de México, Mexico.
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33
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Comparison of thin-film microextraction and stir bar sorptive extraction for the analysis of polycyclic aromatic hydrocarbons in aqueous samples with controlled agitation conditions. J Chromatogr A 2008; 1196-1197:89-95. [DOI: 10.1016/j.chroma.2008.03.063] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2008] [Accepted: 03/19/2008] [Indexed: 11/20/2022]
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34
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Moral A, Sicilia MD, Rubio S, Pérez-Bendito D. Multifunctional sorbents for the extraction of pesticide multiresidues from natural waters. Anal Chim Acta 2008; 608:61-72. [DOI: 10.1016/j.aca.2007.11.048] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2007] [Revised: 11/29/2007] [Accepted: 11/30/2007] [Indexed: 10/22/2022]
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35
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36
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Pearson R, Godley A, Cartmell E. Investigating the in situ degradation of atrazine in groundwater. PEST MANAGEMENT SCIENCE 2006; 62:299-306. [PMID: 16470679 DOI: 10.1002/ps.1161] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
This study focused on whether or not atrazine could be degraded by indigenous groundwater bacteria as part of an in situ remediation approach. Groundwater was taken from an unconfined middle upper chalk site where concentrations of atrazine and nitrate were typically in the ranges 0.02-0.2 microg litre-1 and 11.6-25.1 mg NO3-N litre-1 respectively. Sacrificial batch studies were performed using this groundwater spiked with atrazine at a concentration of 10 microg litre-1 in conjunction with a minimal mineral salts liquid (Glu-MMSL) medium which contained glucose as the sole carbon source. Treatments comprised either the Glu-MMSL groundwater cultured bacteria or Pseudomonas sp. strain ADP. Results from sacrificial batches indicated the occurrence of bacterial growth and denitrification as monitored by optical density (absorbance at 600 nm) and NO3-N content. Analysis of atrazine content by solid phase extraction coupled with high-performance liquid chromatography showed no degradation of atrazine over a period of 103 days in either treatment. These results indicated that no acclimatised bacterial community featuring positive degraders to the herbicide atrazine had become established within this chalk aquifer in response to the trace levels encountered.
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Affiliation(s)
- Robert Pearson
- School of Water Sciences, Cranfield University, Cranfield, Bedfordshire MK43 0AL, UK
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37
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Peres F, Oliveira-Silva JJ, Della-Rosa HV, Lucca SRD. Desafios ao estudo da contaminação humana e ambiental por agrotóxicos. CIENCIA & SAUDE COLETIVA 2005. [DOI: 10.1590/s1413-81232005000500006] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
O impacto do uso de agrotóxicos sobre a saúde humana é um problema que tem merecido atenção da comunidade científica em todo o mundo, sobretudo nos países em desenvolvimento. Sua avaliação demanda o conhecimento e a visualização da importância/magnitude relativa de cada uma das vias de contaminação. Inúmeros fatores, tais como as dificuldades metodológicas relacionadas com o monitoramento da exposição ocupacional aos agrotóxicos, as elevadas taxas de subnotificação de casos, a não-consideração de determinantes sociais e econômicos na avaliação de riscos relacionados a estes agentes químicos e a influência da pressão da indústria produtora de agrotóxicos no perfil do consumo destes agentes no meio rural brasileiro. No presente trabalho discute-se a importância destes fatores como determinantes da situação de saúde do homem do campo, a partir dos resultados de pesquisas de campo realizadas em regiões agrícolas do Estado do Rio de Janeiro.
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38
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Cai J, Gao Y, Zhu X, Su Q. Matrix solid phase dispersion-Soxhlet simultaneous extraction clean-up for determination of organochlorine pesticide residues in tobacco. Anal Bioanal Chem 2005; 383:869-74. [PMID: 16211380 DOI: 10.1007/s00216-005-0076-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2005] [Revised: 07/20/2005] [Accepted: 08/16/2005] [Indexed: 11/25/2022]
Abstract
A novel method combining matrix solid phase dispersion (MSPD) with Soxhlet simultaneous extraction clean-up (SSEC) was developed. Being a single-step extraction and clean-up procedure, it could be used instead of multistep solvent extraction and Florisol column clean-up. It not only reduces sample contamination during the procedure, but it also decreases the amount of organic solvent needed. The retention times of standards were used to qualitatively assess the method, and the external standard method was used to quantitatively assess it. Residues of organochlorine pesticides (OCP) in tobaccos were determined by gas chromatography-electron capture detection (GC-ECD), and their identities were confirmed by the standard addition method (SAM). The performance of the method was evaluated and validated: the detection limit was 0.01-0.02 microg g(-1), relative standard deviations were 5-26%, and recoveries were 72-99% at fortification levels of 0.10, 1.00 and 10.0 microg g(-1). The analytical characteristics of MSPD-SSEC compared very favorably with the results from the classical multistep solvent extraction and Florisol column clean-up method.
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Affiliation(s)
- Jibao Cai
- Department of Chemistry, University of Science & Technology of China, Hefei, 230026, PR China.
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39
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Zaater M, Tahboub Y, Qasrawy S. Monitoring of Polychlorinated Biphenyls in Surface Water Using Liquid Extraction, GC/MS, and GC/ECD. ANAL LETT 2005. [DOI: 10.1080/00032710500260886] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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40
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Ozhan G, Ozden S, Alpertunga B. Determination of commonly used herbicides in surface water using solid-phase extraction and dual-column HPLC-DAD. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2005; 40:827-40. [PMID: 16194920 DOI: 10.1080/03601230500227517] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The present study describes the application of different solid-phase extraction techniques for the extraction, separation, and quantitative determination of 10 commonly used herbicides with different chemical structures (chlorsulfuron, diuron, bentazone, linuron, chlorpropham, fenoxoprop-ethyl, MCPA, diclofop-methyl, fluazifop-butyl, trifluraline) in water. Octadecyl (C(18)) Empore extraction disks, octadecyl (C(18)), and stryene divinylbenzene (SDB) Bond Elut Env cartridges were compared for solid-phase extraction efficiency. Herbicides were separated and quantified by reversed-phase high performance liquid chromatography with diode-array detection (HPLC-DAD) with simultaneous separation on two columns of differing polarity (C(18) and CN) to confirm identification. Analytical separation was performed simultaneously on C(18) and CN columns. Reanalysis of the sample extracts on a (cyano) CN column were used to confirm the identity of these compounds. Method optimization and validation parameters were presented in this work. Recoveries varied from 76.0% to 99.0% for C(18) disks, from 75.1% to 100.0% for C(18) cartridges, and from 54.0% to 98.0% for SDB cartridges over concentrations at 0.025--0.4 microg L(-1). The limits of detection were 0.012--0.035 microg L(-1).
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Affiliation(s)
- Gül Ozhan
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Istanbul University, Istanbul, Turkey.
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41
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Moreira Vaz J, Komatsu E. Fast Screening Determination of Some Ubiquitous Pesticides with SPME in Water Samples. ANAL LETT 2004. [DOI: 10.1081/al-120035908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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42
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de Aguiar LH, Moraes G, Avilez IM, Altran AE, Corrêa CF. Metabolical effects of Folidol 600 on the neotropical freshwater fish matrinxã, Brycon cephalus. ENVIRONMENTAL RESEARCH 2004; 95:224-230. [PMID: 15147928 DOI: 10.1016/s0013-9351(03)00119-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2002] [Accepted: 06/05/2003] [Indexed: 05/24/2023]
Abstract
The neotropical freshwater fish matrinxã, Brycon cephalus (Günther, 1869), was exposed to 1/3 of 96 h-LC50 of Folidol 600 (methyl parathion) for 96 h and allowed to recover for 24, 48, 96, and 192 h. Acetylcholinesterase (AChE), alanine aminotransferase (ALAT), aspartate aminotransferase (AAT), lactate dehydrogenase (LDH), malate dehydrogenase (MDH), and glutamate dehydrogenase (GDH) were assayed in brain, liver, muscle, and plasma. Plasma and brain AChE activities were strongly inhibited (64% and 87%, respectively), remaining low in the brain during recovery. Liver ALAT decreased 59.4% and plasma ALAT increased 94.2%. This response, associated with GDH reduction during the recovery period, was attributed to impairment of amino acid metabolism and to liver damage. The increase of heart and plasma AAT suggested tissue injury. Liver and plasma LDH and MDH did not change during the exposure to Folidol, but liver MDH decreased 34% during recovery, indicating a failure of oxidative metabolism in such tissue. Hepatic glycogen and glucose levels decreased 80.4 and 55%, respectively, followed by glucose mobilization to the plasma. The hepatic and muscular profile of lactate after recovery suggested gluconeogenesis without tissue hypoxia. These results revealed that methyl parathion affects the intermediary metabolism of matrinxã and that the assayed enzymes can work as good biomarkers of organophosphorus pesticide contamination.
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Affiliation(s)
- Lucia Helena de Aguiar
- Laboratory of Adaptive Biochemistry, Department of Genetics and Evolution, Federal University of Sao Carlos, Rod. Washington Luis, Km 235, CP 676, CEP 13565-905, Sao Paulo State, Brazil
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Fidalgo-Used N, Centineo G, Blanco-González E, Sanz-Medel A. Solid-phase microextraction as a clean-up and preconcentration procedure for organochlorine pesticides determination in fish tissue by gas chromatography with electron capture detection. J Chromatogr A 2003; 1017:35-44. [PMID: 14584689 DOI: 10.1016/s0021-9673(03)01321-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The feasibility of developing a single-step clean-up, enrichment procedure for organochlorine pesticides (OCPs) in fish tissue samples based on solid-phase microextraction (SPME) was investigated. The general analytical methodology developed combines conventional solid-liquid extraction of the OCPs from the sample using an organic solvent with SPME over the organic extract followed by gas chromatography-electron-capture detection (GC-ECD) analysis. Experimental SPME conditions such as extraction time, temperature and matrix effects were optimised. Under optimised conditions, precision, linearity range, detection limits and accuracy were evaluated. Detection limits obtained for fish tissue samples were in the range of 0.1-0.7 ng g(-1). Good recoveries (over 70% in all cases) were achieved from samples spiked at a concentration level of 10 ng g(-1). The accuracy of the developed SPME-GC-ECD procedure in real samples has been verified by analysing, using the standard addition method, a certified reference material (CRM 430, OCPs in pork fat) with satisfactory results.
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Affiliation(s)
- Natalia Fidalgo-Used
- Department of Physical and Analytical Chemistry, University of Oviedo, C/Julian Clavería 8, 33006 Oviedo, Spain
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Popp P, Bauer C, Hauser B, Keil P, Wennrich L. Extraction of polycyclic aromatic hydrocarbons and organochlorine compounds from water: A comparison between solid-phase microextraction and stir bar sorptive extraction. J Sep Sci 2003. [DOI: 10.1002/jssc.200301398] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Troubleshooting in the trace analysis of organochlorine pesticides in water samples. Chromatographia 2001. [DOI: 10.1007/bf02491207] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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46
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Application of stir bar sorptive extraction in combination with column liquid chromatography for the determination of polycyclic aromatic hydrocarbons in water samples. Anal Chim Acta 2001. [DOI: 10.1016/s0003-2670(01)00895-9] [Citation(s) in RCA: 161] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Espada MCP, Frenich AG, Vidal JLM, Parrilla P. COMPARATIVE STUDY USING ECD, NPD, AND MS/MS CHROMATOGRAPHIC TECHNIQUES IN THE DETERMINATION OF PESTICIDES IN WETLAND WATERS. ANAL LETT 2001. [DOI: 10.1081/al-100002598] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Vandecasteele K, Gaus I, Debreuck W, Walraevens K. Identification and quantification of 77 pesticides in groundwater using solid phase coupled to liquid-liquid microextraction and reversed-phase liquid chromatography. Anal Chem 2000; 72:3093-101. [PMID: 10939372 DOI: 10.1021/ac991359c] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This paper describes a method for the extraction, separation, identification, and quantification of 77 pesticides (neutral, acidic, and basic) including some s-triazine metabolites. The method is appropriate for organically (e.g. with humic acids) highly loaded groundwater samples. A comparative study of a pH-controlled mixed solid phase (LiChroprep RP18/LiChrolut EN) extraction with different desorption solvents (acetonitrile or acetonitrile and dichloromethane/methanol) is elaborated. A subsequent liquid-liquid microextraction reduces matrix effects. The pesticides in the sample are separated using RP-HPLC, detected, and identified by diode array. The efficiency is illustrated on a natural groundwater sample from a phreatic aquifer.
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Affiliation(s)
- K Vandecasteele
- Laboratory for Applied Geology and Hydrogeology, Ghent University, Belgium
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Abstract
This paper reviews current trends and techniques in automated solid-phase extraction. The area has shown a dramatic growth the number of manuscripts published over the last 10 years, including applications in environmental science, food science, clinical chemistry, pharmaceutical bioanalysis, forensics, analytical biochemistry and organic synthesis. This dramatic increase of more that 100% per year can be attributed to the commercial availability of higher throughput 96-well workstations and extraction plates that allow numerous samples to be processed simultaneously. These so-called parallel-processing workstations represent the highest throughput systems currently available. The advantages and limitations of other types of systems, including discrete column systems and on-line solid-phase extraction are also discussed. Discussions of how automated solid-phase extractions can be developed, generic approaches to automated solid-phase extraction, and three noteworthy examples of automated extractions are given. The last part of the review suggests possible near- and long-term directions of automated solid-phase extraction.
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Affiliation(s)
- D T Rossi
- Department of Pharmacokinetics, Dynamics and Metabolism, Parke-Davis Pharmaceutical Research, Division of Warner-Lambert, Ann Arbor, MI 48105, USA.
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