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Microplastic appraisal of soil, water, ditch sediment and airborne dust: the case of agricultural systems
Lwanga, E.H.; van Roshum, I.; Munhoz, D.R.; Meng, K.; Rezaei, M.; Goossens, D.; Bijsterbosch, J.; Alexandre, N.; Oosterwijk, J.; Krol, M.; Peters, P.; Geissen, V.; Ritsema, C. (2023). Microplastic appraisal of soil, water, ditch sediment and airborne dust: the case of agricultural systems. Environ. Pollut. 316(Part 1): 120513. https://dx.doi.org/10.1016/j.envpol.2022.120513
In: Environmental Pollution. Elsevier: Barking. ISSN 0269-7491; e-ISSN 1873-6424, meer
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| Trefwoorden |
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| Author keywords |
Microplastics; Agricultural systems; Soil; Water; Airborne dust; Ditch sediment |
| Auteurs | | Top |
- Lwanga, E.H.
- van Roshum, I.
- Munhoz, D.R.
- Meng, K.
- Rezaei, M.
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- Goossens, D., meer
- Bijsterbosch, J.
- Alexandre, N.
- Oosterwijk, J.
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- Krol, M.
- Peters, P.
- Geissen, V.
- Ritsema, C.
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| Abstract |
Although microplastic pollution jeopardizes both terrestrial and aquatic ecosystems, the movement of plastic particles through terrestrial environments is still poorly understood. Agricultural soils exposed to different managements are important sites of storage and dispersal of microplastics. This study aimed to identify the abundance, distribution, and type of microplastics present in agricultural soils, water, airborne dust, and ditch sediments. Soil health was also assessed using soil macroinvertebrate abundance and diversity. Sixteen fields were evaluated, 6 of which had been exposed to more than 5 years of compost application, 5 were exposed to at least 5 years of plastic mulch use, and 5 were not exposed to any specific management (controls) within the last 5 years. We also evaluated the spread of microplastics from the farms into nearby water bodies and airborne dust. We found 11 types of microplastics in soil, among which Light Density Polyethylene (LDPE) and Light Density Polyethylene covered with pro-oxidant additives (PAC) were the most abundant. The highest concentrations of plastics were found in soils exposed to plastic mulch management (128.7 ± 320 MPs.g-1 soil and 224.84 ± 488 MPs.g-1 soil, respectively) and the particles measured from 50 to 150 μm. Nine types of microplastics were found in water, with the highest concentrations observed in systems exposed to compost. Farms applying compost had higher LDPE and PAC concentrations in ditch sediments as compared to control and mulch systems; a significant correlation between soil polypropylene (PP) microplastics with ditch sediment microplastics (r2 0.7 p < 0.05) was found. LDPE, PAC, PE (Polyethylene), and PP were the most abundant microplastics in airborne dust. Soil invertebrates were scarce in the systems using plastic mulch. A cocktail of microplastics was found in all assessed matrices. |
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