Assessing on-site plastics fragmentation: Linking macroplastics litter to microplastics pollution in vegetable fields
Rattachement africain : cl. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
This study proposes a novel approach to determine whether farmers act as a pollution source of microplastics through macroplastic mismanagement or if they are temporary hosts of in-transit microplastics. Using a case-study approach, it was hypothesized that 90 % of soil microplastics would trace back to macroplastic waste mismanaged by farmers. To determine the amount of soil microplastics, linear transects were established and microplastic litter was counted and classified. Additionally, composite soil samples were used to count and colour-classify microplastics. The Kendall correlation was used to differentiate between the colour ranks of macro- and microplastics to discriminate between plastic on-site fragmentation or exogenous plastic pollution. For this, 37 vegetable farms in central Chile were assessed after the growing season. Farms showed lower microplastic counts than previously reported for similar productive conditions (3.68 ± 3.28 u/kg). A median colour correlation of 0.43 (IQR = 0.18–0.55) was observed between macro- and microplastics. Only in 25 % of the studied fields did on-site plastic fragmentation predominate over exogenous plastic pollution. The applied approach is simple to implement and does not require specialized laboratory equipment. We hope that the proposed methodology will serve in environmental monitoring to evaluate adherence to good agricultural practices and to guide pollution-prevention measures. • Approach deployment to discriminate if farms are sources or sinks of microplastics. • Use of plastics and microplastics colours to offer a cost-effective index. • Study case shows that 25 % of farms act as sources of microplastics. • The approach could be used in monitoring to orientate mitigation measures.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Assessing on-site plastics fragmentation: Linking macroplastics litter to microplastics pollution in vegetable fields
- Date Crossref
- 01/12/2024
- Éditeur
- Elsevier BV
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
-
Instituto de Investigaciones Agropecuarias pays non établi dans la noticeStructure de recherche
-
Universidad Santo Tomás pays non établi dans la noticeUniversité ou école supérieure
-
University of Concepción pays non établi dans la noticeUniversité ou école supérieure
-
Fundación Chile pays non établi dans la noticeOrganisation à but non lucratif
-
Escuela de Agronomía pays non établi dans la noticeInstitution
-
Faculty of Agronomy Department of Soils and Natural Resources pays non établi dans la noticeUniversité ou école supérieure
-
Fundación Instituto Profesional Duoc UC pays non établi dans la noticeStructure de recherche
Instituto de Investigaciones Agropecuarias, Universidad Santo Tomás et University of Concepción, avec 4 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.