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Assoumani A, Margoum C, Guillemain C, Renard B, Coquery M. Prediction of the accumulation behavior of pesticides in PDMS-coated stir bars used as passive samplers in freshwaters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 910:168630. [PMID: 37977384 DOI: 10.1016/j.scitotenv.2023.168630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 10/26/2023] [Accepted: 11/14/2023] [Indexed: 11/19/2023]
Abstract
Passive samplers accumulate organic contaminants at rates that depend on in-field exposure conditions such as freshwater flow velocity, water temperature and water quality. Time-weighted average concentrations can be determined by using a correction process such as the performance reference compound (PRC) method. This study presented a new approach to predict the accumulation behavior of pesticides in polydimethylsiloxane-coated stir bars under different exposure conditions and assign a specific PRC to each pesticide for quantitative purposes. We used an experimental design with eight simultaneous accumulation kinetics of 13 pesticides and elimination kinetics of three PRC candidates run in a flow-through system to determine the effects of flow velocity, water temperature and dissolved organic matter on the kinetic constants. We identified the parameters that had a significant effect on the accumulation of each pesticide and assigned a PRC candidate to each pesticide. We then used a discriminant function analysis to find the parameters that had a significant effect on accumulation of the 13 pesticides via their physical-chemical properties and to predict through a stochastic approach the parameters for seven other pesticides. This approach provides a better framework for identifying a PRC than conventional methods to determine unbiased concentrations in future monitoring efforts.
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Affiliation(s)
- A Assoumani
- INRAE, RiverLy, F-69625 Villeurbanne, France; INERIS, Unité Méthodes et développements en Analyses pour l'Environnement, 60550 Verneuil-en-Halatte, France
| | - C Margoum
- INRAE, RiverLy, F-69625 Villeurbanne, France.
| | | | - B Renard
- INRAE, RiverLy, F-69625 Villeurbanne, France; INRAE, Aix Marseille Univ., UR RECOVER, Aix-En-Provence, France
| | - M Coquery
- INRAE, RiverLy, F-69625 Villeurbanne, France
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2
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Novel miniaturized passive sampling devices based on liquid phase microextraction equipped with cellulose-grafted membranes for the environmental monitoring of phthalic acid esters in natural waters. Anal Chim Acta 2022; 1231:340405. [PMID: 36220296 DOI: 10.1016/j.aca.2022.340405] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 09/11/2022] [Accepted: 09/13/2022] [Indexed: 11/21/2022]
Abstract
Phthalic acid esters (PAEs) are considered endocrine disruptors and potential carcinogens. Consequently, efficient and accurate environmental monitoring of trace levels of these organic pollutants is necessary to protect the population against their hazardous effects. Passive sampling techniques have gained notoriety for environmental monitoring and have been proven highly sensitive to temporal variations. This study developed a miniaturized passive sampling device (MPSD) based on hollow fiber liquid-phase microextraction (HF-LPME). The devices were calibrated in the laboratory using an automated calibration system. The results demonstrated the first-order uptake ranges for Diethyl phthalate (DEP), Diisobutyl phthalate (DiBP), Dibutyl phthalate (DBP), Benzyl butyl phthalate (BBP) and Bis(2-ethylhexyl phthalate) (DEHP) between 30 min and 24 h with sampling rates equivalent to 0.009; 0.021; 0.033; 0.085 and 0.003 mL h-1 respectively (R2 between 0.88 and 0.99). The calibrated devices were deployed in 12 marginal lagoons, stretching approximately 330 km along the main river. The extracts recovered from the devices were analyzed by gas chromatography (GC), resulting in the identification and quantification of DEP (0.697-13.7 ng L-1), DiBP (0.100-4.43 ng L-1), DBP (0.014-1.21 ng L-1), BBP (0.218-5.67 ng L-1), and DEHP (0.002-2.24 ng L-1). Despite being frequently identified, DEHP concentrations were well below the maximum established limits, revealing a good water quality in terms of the target PAEs. In contrast, screening the extracts using GCxGC was possible to detect other hazardous pollutants such as pesticides, drugs, and their metabolites. The described device was effective and reliable, providing accurate PAE measurements following short exposure periods. In this sense, its deployment during emergency operations, such as accidental discharges of industrial effluents into natural waters, could continuously and cost-effectively monitor water quality.
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3
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Valenzuela EF, de Paula FF, Teixeira APC, Menezes HC, Cardeal ZL. Assessment of pesticides in water using time-weighted average calibration of passive sampling device manufactured with carbon nanomaterial coating on stainless steel wire. Anal Bioanal Chem 2021; 413:3315-3327. [PMID: 33733701 DOI: 10.1007/s00216-021-03270-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/29/2021] [Accepted: 03/04/2021] [Indexed: 10/21/2022]
Abstract
The continued contamination of water sources by pesticides is a problem that involves the life of aquatic organisms and human health, especially in countries whose economy is based on agriculture. The need to know the quality of drinking water under these circumstances is a priority for the public health of any community. Passive sampling methods allow the determination of long-term environmental pollutants through a single sample collection, reducing time and cost of analyses. One advantage of passive sampling is that it is possible to calculate a time-weighted average (TWA) concentration value or an equilibrium concentration value, depending on the type of device used and the exposure time. Passive sampling techniques using carbon nanomaterials (CNMs) have a high potential for pesticide sampling in aquatic systems. A device for passive sampling manufactured with CNMs in a microextraction system and recyclable materials was calibrated in laboratory exposure conditions over 15 days. The calibration results showed linear accumulation periods between 5 and 10 days. Sampling rates were between 0.014 and 0.146 mL day-1. The sampler was field-tested in the San Francisco river basin in the state of Minas Gerais in Brazil for 7 days. This research allowed for the detection and calculation of TWA concentrations for organochlorine pesticides such as α-HCH, 4,4-DDE, and 4,4-DD in water sources. The manufactured device demonstrated greater sensitivity than the grab sampling processes for the detection of pesticides. The performed passive sampling system using gas chromatography/mass spectrometry (GC/MS) technique allowed for the collection, detection, identification, and quantification of 26 pesticides.
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Affiliation(s)
- Eduard F Valenzuela
- Departamento de Química, ICEx, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, MG, 31270901, Brazil
| | - Fabiano F de Paula
- Departamento de Química, ICEx, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, MG, 31270901, Brazil
| | - Ana Paula C Teixeira
- Departamento de Química, ICEx, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, MG, 31270901, Brazil
| | - Helvécio C Menezes
- Departamento de Química, ICEx, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, MG, 31270901, Brazil
| | - Zenilda L Cardeal
- Departamento de Química, ICEx, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, MG, 31270901, Brazil.
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Veloo KV, Ibrahim NAS. Solid-phase extraction using chloropropyl functionalized sol-gel hybrid sorbent for simultaneous determination of organophosphorus pesticides in selected fruit samples. J Sep Sci 2020; 43:3027-3035. [PMID: 32386268 DOI: 10.1002/jssc.201901237] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 05/04/2020] [Accepted: 05/05/2020] [Indexed: 11/09/2022]
Abstract
A new sol-gel hybrid methyltrimethoxysilane-chloropropyltriethoxysilane was prepared as sorbent for solid-phase extraction. The extraction efficiency of the prepared sol-gel hybrid methyltrimethoxysilane-chloropropyltriethoxysilane was assessed by using three selected organophosphorus pesticides, namely, chlorpyrifos, profenofos, and malathion. Gas chromatography-mass spectrometry was used for detection of organophosphorus pesticides. Several vital parameters were optimized to identify the best extraction conditions. Under the optimum extraction conditions, solid-phase extraction-methyltrimethoxysilane-chloropropyltriethoxysilane method showed good linearity range (0.05-1 μg/mL) with coefficient of determination more than 0.995. The limits of detection obtained were in the range of 0.01-0.07 μg/mL and limits of quantification ranging from 0.03 to 0.21 μg/mL. The limits of detection obtained for the developed method were 2.3-6.5× lower than the limits of detection of commercial octadecyl silica sorbent. Real samples analysis was carried out by applying the developed method on red apple and purple grape samples. The developed method exhibited good recoveries (88.33-120.7%) with low relative standard deviations ranging from 1.6 to 3.3% compared to commercial octadecyl silica sorbent, which showed acceptable recoveries (70.3-100.2%) and relative standard deviations (6.3-8.8%). The solid-phase extraction-methyltrimethoxysilane-chloropropyltriethoxysilane method is presented as an alternative extraction method for determination of organophosphorus pesticides.
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Affiliation(s)
- Krishna Veni Veloo
- Faculty of Agro-Based Industry, Universiti Malaysia Kelantan, Kelantan, Malaysia
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Biparva P, Gorji S, Hedayati E. Promoted reaction microextraction for determining pesticide residues in environmental water samples using gas chromatography-mass spectrometry. J Chromatogr A 2020; 1612:460639. [DOI: 10.1016/j.chroma.2019.460639] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Revised: 10/15/2019] [Accepted: 10/18/2019] [Indexed: 12/22/2022]
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6
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David F, Ochiai N, Sandra P. Two decades of stir bar sorptive extraction: A retrospective and future outlook. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2018.12.006] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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7
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Martin A, Margoum C, Jolivet A, Assoumani A, El Moujahid B, Randon J, Coquery M. Calibration of silicone rubber rods as passive samplers for pesticides at two different flow velocities: Modeling of sampling rates under water boundary layer and polymer control. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2018; 37:1208-1218. [PMID: 29193239 DOI: 10.1002/etc.4050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 05/17/2017] [Accepted: 11/26/2017] [Indexed: 06/07/2023]
Abstract
There is a need to determine time-weighted average concentrations of polar contaminants such as pesticides by passive sampling in environmental waters. Calibration data for silicone rubber-based passive samplers are lacking for this class of compounds. The calibration data, sampling rate (Rs ), and partition coefficient between silicone rubber and water (Ksw ) were precisely determined for 23 pesticides and 13 candidate performance reference compounds (PRCs) in a laboratory calibration system over 14 d for 2 water flow velocities, 5 and 20 cm s-1 . The results showed that an in situ exposure duration of 7 d left a silicone rubber rod passive sampler configuration in the linear or curvilinear uptake period for 19 of the pesticides studied. A change in the transport mechanism from polymer control to water boundary layer control was observed for pesticides with a log Ksw of approximately 3.3. The PRC candidates were not fully relevant to correct the impact of water flow velocity on Rs . We therefore propose an alternative method based on an overall resistance to mass transfer model to adjust Rs from laboratory experiments to in situ hydrodynamic conditions. We estimated diffusion coefficients (Ds ) and thickness of water boundary layer (δw ) as adjustable model parameters. Log Ds values ranged from -12.13 to -10.07 m2 s-1 . The estimated δw value showed a power function correlation with water flow velocity. Environ Toxicol Chem 2018;37:1208-1218. © 2017 SETAC.
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Affiliation(s)
| | | | | | | | | | - Jérôme Randon
- Institut des Sciences Analytiques, Université Claude Bernard Lyon, Villeurbanne, France
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Assoumani A, Margoum C, Lombard A, Guillemain C, Coquery M. How do PDMS-coated stir bars used as passive samplers integrate concentration peaks of pesticides in freshwater? ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:6844-6852. [PMID: 27126867 DOI: 10.1007/s11356-016-6715-0] [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: 01/11/2016] [Accepted: 04/17/2016] [Indexed: 06/05/2023]
Abstract
Passive samplers are theoretically capable of integrating variations of concentrations of micropollutants in freshwater and providing accurate average values. However, this property is rarely verified and quantified experimentally. In this study, we investigated, in controlled conditions, how the polydimethylsiloxane-coated stir bars (passive Twisters) can integrate fluctuating concentrations of 20 moderately hydrophilic to hydrophobic pesticides (2.18 < Log K ow < 5.51). In the first two experiments, we studied the pesticide accumulation in the passive Twisters during high concentration peaks of various durations in tap water. We then followed their elimination from the passive Twisters placed in non-contaminated water (experiment no. 1) or in water spiked at low concentrations (experiment no. 2) for 1 week. In the third experiment, we assessed the accuracy of the time-weighted average concentrations (TWAC) obtained from the passive Twisters exposed for 4 days to several concentration variation scenarios. We observed little to no elimination of hydrophobic pesticides from the passive Twisters placed in non-contaminated water and additional accumulation when placed in water spiked at low concentrations. Moreover, passive Twisters allowed determining accurate TWAC (accuracy, determined by TWAC-average measured concentrations ratios, ranged from 82 to 127 %) for the pesticides with Log K ow higher than 4.2. In contrast, fast and large elimination was observed for the pesticides with Log K ow lower than 4.2 and poorer TWAC accuracy (ranging from 32 to 123 %) was obtained.
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Affiliation(s)
- A Assoumani
- Irstea, UR MALY, Centre de Lyon-Villeurbanne, 5 rue de la Doua, CS 70077, 69626, Villeurbanne Cedex, France
| | - C Margoum
- Irstea, UR MALY, Centre de Lyon-Villeurbanne, 5 rue de la Doua, CS 70077, 69626, Villeurbanne Cedex, France.
| | - A Lombard
- Irstea, UR MALY, Centre de Lyon-Villeurbanne, 5 rue de la Doua, CS 70077, 69626, Villeurbanne Cedex, France
| | - C Guillemain
- Irstea, UR MALY, Centre de Lyon-Villeurbanne, 5 rue de la Doua, CS 70077, 69626, Villeurbanne Cedex, France
| | - M Coquery
- Irstea, UR MALY, Centre de Lyon-Villeurbanne, 5 rue de la Doua, CS 70077, 69626, Villeurbanne Cedex, France
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Rashidi Nodeh H, Wan Ibrahim WA, Kamboh MA, Sanagi MM. New magnetic graphene-based inorganic-organic sol-gel hybrid nanocomposite for simultaneous analysis of polar and non-polar organophosphorus pesticides from water samples using solid-phase extraction. CHEMOSPHERE 2017; 166:21-30. [PMID: 27681257 DOI: 10.1016/j.chemosphere.2016.09.054] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Revised: 09/08/2016] [Accepted: 09/14/2016] [Indexed: 06/06/2023]
Abstract
A new graphene-based tetraethoxysilane-methyltrimethoxysilane sol-gel hybrid magnetic nanocomposite (Fe3O4@G-TEOS-MTMOS) was synthesised, characterized and successfully applied in magnetic solid-phase extraction (MSPE) for simultaneous analysis of polar and non-polar organophosphorus pesticides from several water samples. The Fe3O4@G-TEOS-MTMOS nanocomposite was characterized using Fourier transform-infrared spectroscopy, energy-dispersive X-ray spectroscopy, field emission scanning electron microscopy and X-ray diffraction. Separation, determination and quantification were achieved using gas chromatography coupled with micro electron capture detector. Adsorption capacity of the sorbent was calculated using Langmuir equation. MSPE was linear in the range 100-1000 pg mL-1 for phosphamidon and dimethoate, and 10-100 pg mL-1 for chlorpyrifos and diazinon, with limit of detection (S/N = 3) of 19.8, 23.7, 1.4 and 2.9 pg mL-1 for phosphamidon, dimethoate, diazinon and chlorpyrifos, respectively. The LODs obtained is well below the maximum residual level (100 pg mL-1) as set by European Union for pesticides in drinking water. Acceptable precision (%RSD) was achieved for intra-day (1.3-8.7%, n = 3) and inter-day (7.6-17.8%, n = 15) analyses. Fe3O4@G-TEOS-MTMOS showed high adsorption capacity (54.4-76.3 mg g-1) for the selected OPPs. No pesticide residues were detected in the water samples analysed. Excellent extraction recoveries (83-105%) were obtained for the spiked OPPs from tap, river, lake and sea water samples. The newly synthesised Fe3O4@G-TEOS-MTMOS showed high potential as adsorbent for OPPs analysis.
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Affiliation(s)
- Hamid Rashidi Nodeh
- Separation Science and Technology Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM, Johor Bahru, Johor, Malaysia
| | - Wan Aini Wan Ibrahim
- Separation Science and Technology Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM, Johor Bahru, Johor, Malaysia; Centre for Sustainable Nanomaterials, Ibnu Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, 81310 UTM, Johor Bahru, Johor, Malaysia.
| | - Muhammad Afzal Kamboh
- Separation Science and Technology Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM, Johor Bahru, Johor, Malaysia
| | - Mohd Marsin Sanagi
- Separation Science and Technology Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM, Johor Bahru, Johor, Malaysia; Centre for Sustainable Nanomaterials, Ibnu Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, 81310 UTM, Johor Bahru, Johor, Malaysia
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Martin A, Margoum C, Randon J, Coquery M. Silicone rubber selection for passive sampling of pesticides in water. Talanta 2016; 160:306-313. [DOI: 10.1016/j.talanta.2016.07.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 07/04/2016] [Accepted: 07/07/2016] [Indexed: 11/16/2022]
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Use of a versatile, easy, and rapid atmospheric monitor (VERAM) passive samplers for pesticide determination in continental waters. Anal Bioanal Chem 2016; 408:8495-8503. [DOI: 10.1007/s00216-016-9975-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 09/02/2016] [Accepted: 09/26/2016] [Indexed: 10/20/2022]
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12
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Martin A, Margoum C, Coquery M, Randon J. Combination of sorption properties of polydimethylsiloxane and solid-phase extraction sorbents in a single composite material for the passive sampling of polar and apolar pesticides in water. J Sep Sci 2016; 39:3990-3997. [DOI: 10.1002/jssc.201600502] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 08/01/2016] [Accepted: 08/10/2016] [Indexed: 11/10/2022]
Affiliation(s)
| | | | | | - Jérôme Randon
- Univ Lyon, CNRS, Université Claude Bernard Lyon 1, Ens de Lyon; Institut des Sciences Analytiques; UMR 5280, Villeurbanne France
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13
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Vrana B, Komancová L, Sobotka J. Calibration of a passive sampler based on stir bar sorptive extraction for the monitoring of hydrophobic organic pollutants in water. Talanta 2016; 152:90-7. [DOI: 10.1016/j.talanta.2016.01.040] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 01/18/2016] [Accepted: 01/21/2016] [Indexed: 11/26/2022]
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14
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Posada-Ureta O, Olivares M, Zatón L, Delgado A, Prieto A, Vallejo A, Paschke A, Etxebarria N. Uptake calibration of polymer-based passive samplers for monitoring priority and emerging organic non-polar pollutants in WWTP effluents. Anal Bioanal Chem 2016; 408:3165-75. [DOI: 10.1007/s00216-016-9381-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2015] [Revised: 01/27/2016] [Accepted: 02/01/2016] [Indexed: 10/22/2022]
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15
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Hong SH, Lee JB, Lee SH, Cho YH, Shin HS. Simultaneous Determination of Ultra-Trace Pesticides and Synthetic Materials in Surface Water by LC-ESI-MS/MS. JOURNAL OF THE KOREAN CHEMICAL SOCIETY-DAEHAN HWAHAK HOE JEE 2015. [DOI: 10.5012/jkcs.2015.59.3.225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Assoumani A, Coquery M, Liger L, Mazzella N, Margoum C. Field application of passive SBSE for the monitoring of pesticides in surface waters. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:3997-4008. [PMID: 25231742 DOI: 10.1007/s11356-014-3590-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 09/09/2014] [Indexed: 06/03/2023]
Abstract
Spot sampling lacks representativeness for monitoring organic contaminants in most surface waters. Passive sampling has emerged as a cost-effective complementary sampling technique. We recently developed passive stir bar sorptive extraction (passive SBSE), with Twister from Gerstel, for monitoring moderately hydrophilic to hydrophobic pesticides (2.18 < log K ow < 5.11) in surface water. The aims of the present study were to assess this new passive sampler for the determination of representative average concentrations and to evaluate the contamination levels of two French rivers. Passive SBSE was evaluated for the monitoring of 16 pesticides in two rivers located in a small vineyard watershed during two 1-month field campaigns in spring 2010 and spring 2011. Passive SBSE was applied for periods of 1 or 2 weeks during the field campaigns and compared with spot sampling and weekly average automated sampling. The results showed that passive SBSE could achieve better time-representativeness than spot sampling and lower limits of quantification than automated sampling coupled with analytical SBSE for the pesticides studied. Finally, passive SBSE proved useful for revealing spatial and temporal variations in pesticide contamination of both rivers and the impact of rainfall and runoff on the river water quality.
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Affiliation(s)
- A Assoumani
- Irstea, UR MALY, centre de Lyon-Villeurbanne, 5 rue de la Doua-CS 70077, F-69626, Villeurbanne cedex, France,
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17
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Tang J, He G, Li G. Application of the triolein-embedded cellulose acetate membrane passive sampler for monitoring of polycyclic aromatic hydrocarbons in water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:9852-9860. [PMID: 24859695 DOI: 10.1007/s11356-014-2989-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 04/30/2014] [Indexed: 06/03/2023]
Abstract
Triolein-embedded cellulose acetate membrane (TECAM) can be used as a passive sampler to measure hydrophobic organic contaminants in water. Uptake constant rates (k u ) for polycyclic aromatic hydrocarbons (PAHs) by TECAM sampling were measured under different hydrodynamic conditions. The measured k u values were modeled to enable the quantification of time weighed average (TWA) concentrations of PAHs in the field. An empirical relationship that enables the calculation of in situ k u values of chemicals using performance reference compounds (PRCs) was derived and its application was demonstrated in a field study. The results showed that freely dissolved concentrations of hydrophobic organic compounds (HOCs) can be accurately measured in the field using TECAM method based on empirical uptake models calibrated with PRCs.
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Affiliation(s)
- Jianfeng Tang
- Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China,
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18
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Zhang L, Sheng X, Zhang R, Xiong Z, Wu Z, Yan S, Zhang Y, Zhang W. Development of a field sampling method based on magnetic nanoparticles for the enrichment of pesticides in aqueous samples. Analyst 2014; 139:6279-83. [DOI: 10.1039/c4an01469c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A field sampling method based on magnetic core–shell silica nanoparticles was developed for field sampling and the enrichment of low concentrations of pesticides in aqueous samples.
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Affiliation(s)
- Lingyi Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry
- Department of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237, P. R. China
| | - Xiaoling Sheng
- Shanghai Key Laboratory of Functional Materials Chemistry
- Department of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237, P. R. China
| | - Runsheng Zhang
- Shanghai Key Laboratory of Crime Scene Evidence
- State Key Laboratory Breeding of Crime Scene Evidence
- Shanghai Institute of Forensic Science
- Shanghai 200083, P. R. China
| | - Zhichao Xiong
- Shanghai Key Laboratory of Functional Materials Chemistry
- Department of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237, P. R. China
| | - Zhongping Wu
- Shanghai Key Laboratory of Crime Scene Evidence
- State Key Laboratory Breeding of Crime Scene Evidence
- Shanghai Institute of Forensic Science
- Shanghai 200083, P. R. China
| | - Songmao Yan
- Shanghai Key Laboratory of Crime Scene Evidence
- State Key Laboratory Breeding of Crime Scene Evidence
- Shanghai Institute of Forensic Science
- Shanghai 200083, P. R. China
| | - Yurong Zhang
- Shanghai Key Laboratory of Crime Scene Evidence
- State Key Laboratory Breeding of Crime Scene Evidence
- Shanghai Institute of Forensic Science
- Shanghai 200083, P. R. China
| | - Weibing Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry
- Department of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237, P. R. China
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