Cerrar

No. de sistema: 000026603

LDR _ _ 00000nab^^22^^^^^za^4500
008 _ _ 190410m20199999xx^^r^p^o^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
044 _ _ a| xx
245 0 0 a| Leaching of microplastics by preferential flow in earthworm (Lumbricus terrestris) burrows
506 _ _ a| Acceso en línea sin restricciones
520 1 _ a| In the current study, we examine how the activities of earthworms (Lumbricus terrestris) affect microplastic (MP) distribution and concentration in soil, with a focus on low density polyethylene (LDPE). We also want to determine if MPs can be flushed out with water. We used a laboratory sandy soil column (polyvinyl chloride tube) experimental set-up and tested five different treatments: (1) treatment with just soil (control) to check if the saturated conductivity (Ksat) could be impacted by MP, (2) treatment with MP, (3) treatment with MP and litter, (4) treatment with earthworms and litter as a second control for treatment 5 and (5) treatment with MPs, earthworms and litter. Each treatment consisted of eight replicates. For the treatments with MP, the concentration of MP added at the start of the experiment was 7 % by weight (3.97 g, polyethylene, 50 % 1 mm–250 µm, 30 % 250 µm–150 µm and 20 % <150 µm) based on 52.78 g of dry litter from Populus nigra. In the treatments using earthworms, two adult earthworms, with an initial average weight of (7.14 ± 0.26) g, were placed in each column. Results showed that LDPE particles could be introduced into the soil by the earthworms.
520 1 _ a| MP particles were detected in each soil sample and within different soil layers for the earthworm treatments. Earthworms showed a tendency to transport the smaller MP particles and that the amount of MPs in size class <250 μm increased in soil samples with increasing soil depth in comparison to the other size classes. After leaching, MPs were only detected in the leachate from the treatments with the earthworms, and the MP had similar size distributions as the soil samples in the 40–50 cm layer of the treatment with MP, earthworms and litter. The results of this study clearly show that biogenic activities can mobilise MP transport from the surface into the soil and even be leached into drainage. It is highly likely that biogenic activities constitute a potential pathway for MPs to be transported into soil and groundwater.
530 _ _ a| Disponible en línea
533 _ _ a| Reproducción electrónica en formato PDF
538 _ _ a| Adobe Acrobat profesional 6.0 o superior
650 _ 4 a| Lombrices de tierra
650 _ 4 a| Microplásticos
650 _ 4 a| Conducta animal
650 _ 4 a| Biología de suelos
700 1 _ a| Yu, Miao
e| autor
700 1 _ a| van der Ploeg, Martine
e| autora
700 1 _ a| Huerta Lwanga, Esperanza
c| Dra.
e| autora
700 1 _ a| Yang, Xiaomei
e| autora
700 1 _ a| Zhang, Shaoliang
e| autor
700 1 _ a| Ma, Xiaoyi
e| autora
700 1 _ a| Ritsema, Coen J.
e| autor
700 1 _ a| Geissen Geissen, Violette
e| autora
773 0 _
t| Environmental Chemistry
g| Vol. 16, no. 1 (January 2019), p. 31-40
x| 1448-2517
856 4 1 u| http://edepot.wur.nl/469989
z| Artículo electrónico
901 _ _ a| Artículo con arbitraje
902 _ _ a| GOG / MM
904 _ _ a| Abril 2019
905 _ _ a| Artecosur
905 _ _ a| Biblioelectrónica
LNG eng
Cerrar
Leaching of microplastics by preferential flow in earthworm (Lumbricus terrestris) burrows
Yu, Miao (autor)
van der Ploeg, Martine (autora)
Huerta Lwanga, Esperanza (autora)
Yang, Xiaomei (autora)
Zhang, Shaoliang (autor)
Ma, Xiaoyi (autora)
Ritsema, Coen J. (autor)
Geissen Geissen, Violette (autora)
Nota: Disponible en línea
Acceso en línea sin restricciones
Contenido en: Environmental Chemistry. Vol. 16, no. 1 (January 2019), p. 31-40. ISSN: 1448-2517
No. de sistema: 26603
Tipo: - Artículo con arbitraje
PDF
  • Consulta (1)




Inglés

"In the current study, we examine how the activities of earthworms (Lumbricus terrestris) affect microplastic (MP) distribution and concentration in soil, with a focus on low density polyethylene (LDPE). We also want to determine if MPs can be flushed out with water. We used a laboratory sandy soil column (polyvinyl chloride tube) experimental set-up and tested five different treatments: (1) treatment with just soil (control) to check if the saturated conductivity (Ksat) could be impacted by MP, (2) treatment with MP, (3) treatment with MP and litter, (4) treatment with earthworms and litter as a second control for treatment 5 and (5) treatment with MPs, earthworms and litter. Each treatment consisted of eight replicates. For the treatments with MP, the concentration of MP added at the start of the experiment was 7 % by weight (3.97 g, polyethylene, 50 % 1 mm–250 µm, 30 % 250 µm–150 µm and 20 % <150 µm) based on 52.78 g of dry litter from Populus nigra. In the treatments using earthworms, two adult earthworms, with an initial average weight of (7.14 ± 0.26) g, were placed in each column. Results showed that LDPE particles could be introduced into the soil by the earthworms."

"MP particles were detected in each soil sample and within different soil layers for the earthworm treatments. Earthworms showed a tendency to transport the smaller MP particles and that the amount of MPs in size class <250 μm increased in soil samples with increasing soil depth in comparison to the other size classes. After leaching, MPs were only detected in the leachate from the treatments with the earthworms, and the MP had similar size distributions as the soil samples in the 40–50 cm layer of the treatment with MP, earthworms and litter. The results of this study clearly show that biogenic activities can mobilise MP transport from the surface into the soil and even be leached into drainage. It is highly likely that biogenic activities constitute a potential pathway for MPs to be transported into soil and groundwater."


  • Adobe Acrobat profesional 6.0 o superior