Organic Matter Causes Chemical Pollutant Dissipation Along With Adsorption and Microbial Degradation

Show simple item record Harju, A. Vilhelmiina Narhi, Ilkka Mattsson, Marja Kerminen, Kaisa Kontro, Merja H. 2021-10-14T14:48:01Z 2021-10-14T14:48:01Z 2021-09-20
dc.identifier.citation Harju , A V , Narhi , I , Mattsson , M , Kerminen , K & Kontro , M H 2021 , ' Organic Matter Causes Chemical Pollutant Dissipation Along With Adsorption and Microbial Degradation ' , Frontiers in Environmental Science , vol. 9 , 666222 .
dc.identifier.other PURE: 169466300
dc.identifier.other PURE UUID: f122f62d-1130-441e-9d82-b5dd66233ab0
dc.identifier.other WOS: 000702932600001
dc.identifier.other ORCID: /0000-0002-0629-675X/work/101503068
dc.identifier.other ORCID: /0000-0001-6585-5382/work/101503568
dc.identifier.other Scopus: 85116493105
dc.description.abstract Views on the entry of organic pollutants into the organic matter (OM) decaying process are divergent, and in part poorly understood. To clarify these interactions, pesticide dissipation was monitored in organic and mineral soils not adapted to contaminants for 241 days; in groundwater sediment slurries adapted to pesticides for 399 days; and in their sterilized counterparts with and without peat (5%) or compost-peat-sand (CPS, 15%) mixture addition. The results showed that simazine, atrazine and terbuthylazine (not sediment slurries) were chemically dissipated in the organic soil, and peat or CPS-amended soils and sediment slurries, but not in the mineral soil or sediment slurries. Hexazinone was chemically dissipated best in the peat amended mineral soil and sediment slurries. In contrast, dichlobenil chemically dissipated in the mineral soil and sediment slurries. The dissipation product 2,6-dichlorobenzamide (BAM) concentrations were lowest in the mineral soil, while dissipation was generally poor regardless of plant-derived OM, only algal agar enhanced its chemical dissipation. Based on sterilized counterparts, only terbutryn appeared to be microbially degraded in the organic soil, i.e., chemical dissipation of pesticides would appear to be utmost important, and could be the first response in the natural cleansing capacity of the environment, during which microbial degradation evolves. Consistent with compound-specific dissipation in the mineral or organic environments, long-term concentrations of pentachloroaniline and hexachlorobenzene were lowest in the mineral-rich soils, while concentrations of dichlorodiphenyltrichloroethane (DTT) and metabolites were lowest in the organic soils of old market gardens. OM amendments changed pesticide dissipation in the mineral soil towards that observed in the organic soil; that is OM accelerated, slowed down or stopped dissipation. en
dc.format.extent 14
dc.language.iso eng
dc.relation.ispartof Frontiers in Environmental Science
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject pesticides
dc.subject long-term dissipation
dc.subject organic soil
dc.subject mineral soil
dc.subject sediments
dc.subject organic matter
dc.subject peat
dc.subject compost-peat-sand mixture
dc.subject BOREAL REGION
dc.subject HERBICIDE
dc.subject MECHANISMS
dc.subject 1172 Environmental sciences
dc.title Organic Matter Causes Chemical Pollutant Dissipation Along With Adsorption and Microbial Degradation en
dc.type Article
dc.contributor.organization Department of Education
dc.contributor.organization Ecosystems and Environment Research Programme
dc.contributor.organization Environmental Ecology
dc.contributor.organization Environmental Sciences
dc.contributor.organization Helsinki Institute of Sustainability Science (HELSUS)
dc.description.reviewstatus Peer reviewed
dc.relation.issn 2296-665X
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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