Influence of pesticide concentration on their heterogeneous atmospheric degradation by ozone
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 percen...
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Veröffentlicht in: | Chemosphere (Oxford) 2019-08, Vol.228, p.75-82 |
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description | 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%–3% of a monolayer. This decrease was attributed to a shielding effect. More aggregates of pesticides form with increasing surface coating leading to lower accessibility for ozone to the adsorbed pesticide molecules. Moreover, it was observed that the particle type could play a role in the influence of the surface coating level on the degradation rates. Results obtained will contribute to a better understanding of the atmospheric fate of pesticides and semi-volatile organic compounds in the particulate phase and show the importance of working with consistent surface coating level in order to compare the obtained degradation constants.
[Display omitted]
•Experimental study of pesticides heterogeneous degradation by ozone.•The increase of the surface coating slows the degradation kinetics down.•The surface coating is influenced by the nature of particles. |
doi_str_mv | 10.1016/j.chemosphere.2019.04.082 |
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[Display omitted]
•Experimental study of pesticides heterogeneous degradation by ozone.•The increase of the surface coating slows the degradation kinetics down.•The surface coating is influenced by the nature of particles.</description><identifier>ISSN: 0045-6535</identifier><identifier>EISSN: 1879-1298</identifier><identifier>DOI: 10.1016/j.chemosphere.2019.04.082</identifier><identifier>PMID: 31022622</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Analytical chemistry ; Atmosphere ; Chemical Sciences ; Degradation ; Heterogeneous ; Ocean, Atmosphere ; Ozone ; Pesticides ; Sciences of the Universe ; Surface coating</subject><ispartof>Chemosphere (Oxford), 2019-08, Vol.228, p.75-82</ispartof><rights>2019 Elsevier Ltd</rights><rights>Copyright © 2019 Elsevier Ltd. All rights reserved.</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c406t-2c8146e258c1dd8d49f5ae0da3d6bd979d5f9c6862c763374d13dcc1027dd4e23</cites><orcidid>0000-0002-9211-6347 ; 0000-0003-4829-3132 ; 0000-0002-7778-8188</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.chemosphere.2019.04.082$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,780,784,885,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31022622$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-02107106$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Mattei, Coraline</creatorcontrib><creatorcontrib>Dupont, Julien</creatorcontrib><creatorcontrib>Wortham, Henri</creatorcontrib><creatorcontrib>Quivet, Etienne</creatorcontrib><title>Influence of pesticide concentration on their heterogeneous atmospheric degradation by ozone</title><title>Chemosphere (Oxford)</title><addtitle>Chemosphere</addtitle><description>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%–3% of a monolayer. This decrease was attributed to a shielding effect. More aggregates of pesticides form with increasing surface coating leading to lower accessibility for ozone to the adsorbed pesticide molecules. Moreover, it was observed that the particle type could play a role in the influence of the surface coating level on the degradation rates. Results obtained will contribute to a better understanding of the atmospheric fate of pesticides and semi-volatile organic compounds in the particulate phase and show the importance of working with consistent surface coating level in order to compare the obtained degradation constants.
[Display omitted]
•Experimental study of pesticides heterogeneous degradation by ozone.•The increase of the surface coating slows the degradation kinetics down.•The surface coating is influenced by the nature of particles.</description><subject>Analytical chemistry</subject><subject>Atmosphere</subject><subject>Chemical Sciences</subject><subject>Degradation</subject><subject>Heterogeneous</subject><subject>Ocean, Atmosphere</subject><subject>Ozone</subject><subject>Pesticides</subject><subject>Sciences of the Universe</subject><subject>Surface coating</subject><issn>0045-6535</issn><issn>1879-1298</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqNkUFr3DAQhUVJaDZp_0JxbunBzki2ZesYljYJLOSS3ApCqxnHWrzWRvIG0l9fbb0NPQYEguF7M_PmMXbJoeDA5fWmsD1tfdz1FKgQwFUBVQGt-MQWvG1UzoVqT9gCoKpzWZf1GTuPcQOQxLX6zM5KDkJIIRbs1_3YDXsaLWW-y3YUJ2cdUmZ9Ko1TMJPzY5be1JMLWU8TBf9MI_l9zMx0XMLZDOk5GJzx9Vvmf_uRvrDTzgyRvh7_C_b088fj8i5fPdzeL29Wua1ATrmwLa8kibq1HLHFSnW1IUBTolyjahTWnbKylcI2siybCnmJ1iYPDWJForxg3-e-vRn0LritCW_aG6fvblb6UAPBoeEgX3lir2Z2F_zLPvnVWxctDYP560kLwaVIo9o6oWpGbfAxBuree3PQhyD0Rv8XhD4EoaHSKYik_XYcs19vCd-V_y6fgOUMUDrMq6Ogo3WHHNAFspNG7z4w5g9EZaDV</recordid><startdate>20190801</startdate><enddate>20190801</enddate><creator>Mattei, Coraline</creator><creator>Dupont, Julien</creator><creator>Wortham, Henri</creator><creator>Quivet, Etienne</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>1XC</scope><scope>VOOES</scope><orcidid>https://orcid.org/0000-0002-9211-6347</orcidid><orcidid>https://orcid.org/0000-0003-4829-3132</orcidid><orcidid>https://orcid.org/0000-0002-7778-8188</orcidid></search><sort><creationdate>20190801</creationdate><title>Influence of pesticide concentration on their heterogeneous atmospheric degradation by ozone</title><author>Mattei, Coraline ; Dupont, Julien ; Wortham, Henri ; Quivet, Etienne</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c406t-2c8146e258c1dd8d49f5ae0da3d6bd979d5f9c6862c763374d13dcc1027dd4e23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Analytical chemistry</topic><topic>Atmosphere</topic><topic>Chemical Sciences</topic><topic>Degradation</topic><topic>Heterogeneous</topic><topic>Ocean, Atmosphere</topic><topic>Ozone</topic><topic>Pesticides</topic><topic>Sciences of the Universe</topic><topic>Surface coating</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mattei, Coraline</creatorcontrib><creatorcontrib>Dupont, Julien</creatorcontrib><creatorcontrib>Wortham, Henri</creatorcontrib><creatorcontrib>Quivet, Etienne</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><jtitle>Chemosphere (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mattei, Coraline</au><au>Dupont, Julien</au><au>Wortham, Henri</au><au>Quivet, Etienne</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of pesticide concentration on their heterogeneous atmospheric degradation by ozone</atitle><jtitle>Chemosphere (Oxford)</jtitle><addtitle>Chemosphere</addtitle><date>2019-08-01</date><risdate>2019</risdate><volume>228</volume><spage>75</spage><epage>82</epage><pages>75-82</pages><issn>0045-6535</issn><eissn>1879-1298</eissn><abstract>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%–3% of a monolayer. This decrease was attributed to a shielding effect. More aggregates of pesticides form with increasing surface coating leading to lower accessibility for ozone to the adsorbed pesticide molecules. Moreover, it was observed that the particle type could play a role in the influence of the surface coating level on the degradation rates. Results obtained will contribute to a better understanding of the atmospheric fate of pesticides and semi-volatile organic compounds in the particulate phase and show the importance of working with consistent surface coating level in order to compare the obtained degradation constants.
[Display omitted]
•Experimental study of pesticides heterogeneous degradation by ozone.•The increase of the surface coating slows the degradation kinetics down.•The surface coating is influenced by the nature of particles.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>31022622</pmid><doi>10.1016/j.chemosphere.2019.04.082</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-9211-6347</orcidid><orcidid>https://orcid.org/0000-0003-4829-3132</orcidid><orcidid>https://orcid.org/0000-0002-7778-8188</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | Analytical chemistry Atmosphere Chemical Sciences Degradation Heterogeneous Ocean, Atmosphere Ozone Pesticides Sciences of the Universe Surface coating |
title | Influence of pesticide concentration on their heterogeneous atmospheric degradation by ozone |
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