The persistence of pesticides in atmospheric particulate phase: An emerging air quality issue

Socorro, Joanna; Durand, Amandine; Temime-Roussel, Brice; Gligorovski, Sasho; Wortham, Henri; Quivet, Étienne

doi:10.1038/srep33456

Cited by 86 publications

(48 citation statements)

References 34 publications

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“…However, this would only be the case if the degradation products would desorb to the gas phase. Yet, it was previously shown that the heterogeneous ozonolysis of deltamethrin and permethrin leads to degradation products including some that remain in the particle phase (Socorro et al 2016). Also, the study of the degradation of chlorpyrifos (El Masri et al, 2016) also focuses on one of its degradation products: chlorpyrifos oxon.…”

Section: Aggregate Shielding Effectmentioning

confidence: 99%

“…These four pesticides were selected based on their presence in the atmosphere up to a dozen of ng m -3 (Désert et al, 2018), on their toxicity M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 6 (APVMA, 2017), and on their distribution between the gas and particle phases (AOPWIN TM , Meylan and Howard 1993). Moreover, they have been the subject of numerous studies of reactivity towards ozone (Socorro et al 2015;Mattei et al 2018) and OH radicals (Socorro et al 2016;Mattei et al 2019). The two particle types were chosen as models for mineral atmospheric particles.…”

Section: Introductionmentioning

confidence: 99%

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Influence of pesticide concentration on their heterogeneous atmospheric degradation by ozone

et al. 2019

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A fraction of the atmospheric pesticides can be adsorbed on particles surface according to their physicochemical properties. After adsorption, pesticides can undergo heterogeneous reactivity with atmospheric oxidants such as ozone, but the influence of the pesticide surface coating (i.e., the percentage of the particle surface covered by pesticide molecules) on the degradation kinetics is not well-understood. To estimate the importance of this phenomenon, the influence of the surface coating level in pesticides on the heterogeneous ozonolysis of cyprodinil, deltamethrin, permethrin, and pendimethalin adsorbed on hydrophobic and hydrophilic silicas was investigated. Surface coating level varied from 0.3% to 15% of a monolayer. Generally, the increase of the surface coating level induced a slower degradation of the pesticides above 1% to 3% of a monolayer. This decrease was attributed to a shielding

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Section: Aggregate Shielding Effectmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of pesticide concentration on their heterogeneous atmospheric degradation by ozone

et al. 2019

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“…Gas-phase reactivity of organic compounds with OH radicals has been demonstrated to be significantly larger than heterogeneous reactivity (by 2 or 3 orders of magnitude higher) (Esteve et al, 2006;Lambe et al, 2009;Hennigan et al, 2011;Socorro et al, 2016). Therefore, in this study, we assume the heterogeneous process to be negligible compared to the gas-phase reactions and thus only consider reactions in the gas phase.…”

Section: Mathematical Formalism Of the Modelmentioning

confidence: 99%

Influence of the vapor wall loss on the degradation rate constants in chamber experiments of levoglucosan and other biomass burning markers

et al. 2018

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Abstract. Vapor wall loss has only recently been shown a potentially significant bias in atmospheric chamber studies. Yet, previous works aiming at the determination of the degradation rate of semi-volatile organic compounds (SVOCs) often did not account for this process. Here, we evaluate the influence of vapor wall loss on the determination of the gas-phase reaction rate kOH of several biomass burning markers (levoglucosan, mannosan, coniferyl aldehyde, 3-guaiacyl propanol, and acetosyringone) with hydroxyl radicals (OH). Emissions from the combustion of beech wood were injected into a 5.5 m3 Teflon atmospheric chamber, and aged for 4 h (equivalent to 5–8 h in the atmosphere). The particle-phase compound concentrations were monitored using a thermal desorption aerosol gas chromatograph coupled to a high-resolution time-of-flight aerosol mass spectrometer (TAG-AMS). The observed depletion of the concentration was later modeled using two different approaches: the previously published approach which does not take into consideration partitioning and vapor wall loss, and an approach with a more complex theoretical framework which integrates all the processes likely influencing the particle-phase concentration. We find that with the first approach one fails to predict the measured markers' concentration time evolution. With the second approach, we determine that partitioning and vapor wall loss play a predominant role in the particle-phase concentration depletion of all the compounds, while the reactivity with OH has a non-significative effect. Furthermore, we show that kOH cannot be determined precisely without a strong constraint of the whole set of physical parameters necessary to formally describe the various processes involved. It was found that the knowledge of the saturation mass concentration C* is especially crucial. Therefore, previously published rate constants of levoglucosan and more generally SVOCs with hydroxyl radicals inferred from atmospheric chamber experiments must be, at least, considered with caution.

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“…Pesticide application increases the density of PM substances in agricultural processes, and chemically active particles are transported to areas far from the application area by wind, and through inhalation also affect people living around the application area [5,6,7]. Pesticides are bioactive compounds used to eliminate pests and to protect crops from them.…”

Section: Introductionmentioning

confidence: 99%

Respiratory symptoms and pulmonary functions before and after pesticide application in cotton farming

Sak¹,

Kurtuluş²,

Ocaklı³

et al. 2018

Ann Agric Environ Med.

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Ojective. To investigate respiratory health problems related to pesticide exposure in the inhabitants of agricultural areas. Materials and method. This study included 252 participants prior to pesticide application and 66 participants from the first group after pesticide application across four cotton farms. Symptom questionnaires were filled out by participants and respiratory function tests were measured before and after pesticide exposure. In addition, PM 10 , PM 2.5 , air temperature, and humidity were measured in all four farming villages before and after pesticide administration. Results. PM 10 and PM 2.5 levels were significantly increased after pesticide application. After pesticide application, all participants' nose, throat, eye, and respiratory complaints increased significantly. Expected forced vital capacity (FVC) and forced expiratory volume in one second (FEV 1) percentage values decreased significantly. The rates of FVC and FEV 1 values lower than 80% were 23.5% and 22%, respectively, before pesticide application, and this rate increased to 42.4% and 43.1%, respectively, after pesticide application. There was a significant negative correlation between PM 10 levels and FVC, FEV 1 , and PEF values. After PM 2.5 pesticide application, the risk of experiencing burning in the mouth, nose, and throat increased by 2.3-fold (OR: 2.316), 2.6-fold for burning symptoms in the eyes (OR: 2.593), 2.1-fold for wheezing (OR: 2.153), and 2.2-fold for chest tightness (OR: 2.211). With increased PM 10 levels, the risk of chest tightness increased 1.1-fold (OR: 1.123). Conclusions. After pesticide administration, the respiratory health of the participants deteriorated. Performing pesticide applications in agriculture with harmless methods is the most important measure to be taken to protect public health

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The persistence of pesticides in atmospheric particulate phase: An emerging air quality issue

Cited by 86 publications

References 34 publications

Influence of pesticide concentration on their heterogeneous atmospheric degradation by ozone

Influence of pesticide concentration on their heterogeneous atmospheric degradation by ozone

Influence of the vapor wall loss on the degradation rate constants in chamber experiments of levoglucosan and other biomass burning markers

Respiratory symptoms and pulmonary functions before and after pesticide application in cotton farming

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