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@article{1835457,
author = {Schell, Theresa and Hurley, Rachel and Buenaventura, Nina T. and Mauri, Pedro V. and Nizzetto, Luca and Rico, Andreu and Vighi, Marco},
article_location = {OXFORD, OXON, ENGLAND},
article_number = {January 2022},
doi = {http://dx.doi.org/10.1016/j.envpol.2021.118520},
keywords = {Microplastic; Sewage sludge; Agroecosystems; Water runoff; Exposure assessment},
language = {eng},
issn = {0269-7491},
journal = {Environmental Pollution},
title = {Fate of microplastics in agricultural soils amended with sewage sludge: Is surface water runoff a relevant environmental pathway?*},
url = {https://www.sciencedirect.com/science/article/pii/S0269749121021023?via%3Dihub},
volume = {293},
year = {2022}
}
TY - JOUR
ID - 1835457
AU - Schell, Theresa - Hurley, Rachel - Buenaventura, Nina T. - Mauri, Pedro V. - Nizzetto, Luca - Rico, Andreu - Vighi, Marco
PY - 2022
TI - Fate of microplastics in agricultural soils amended with sewage sludge: Is surface water runoff a relevant environmental pathway?*
JF - Environmental Pollution
VL - 293
IS - January 2022
SP - 1-8
EP - 1-8
PB - ELSEVIER SCI LTD
SN - 02697491
KW - Microplastic
KW - Sewage sludge
KW - Agroecosystems
KW - Water runoff
KW - Exposure assessment
UR - https://www.sciencedirect.com/science/article/pii/S0269749121021023?via%3Dihub
N2 - Sewage sludge used as agricultural fertilizer has been identified as an important source of microplastics (MPs) to the environment. However, the fate of MPs added to agricultural soils is largely unknown. This study investigated the fate of MPs in agricultural soils amended with sewage sludge and the role of surface water runoff as a mechanism driving their transfer to aquatic ecosystems. This was assessed using three experimental plots located in a semi-arid area of Central Spain, which were planted with barley. The experimental plots received the following treatments: (1) control or no sludge application; (2) historical sludge application, five years prior to the experiment; and (3) sludge application at the beginning of the experiment. MPs were analyzed in surface water runoff and in different soil layers to investigate transport and infiltration for one year. The sewage sludge used in our experiment contained 5972-7771 MPs/kg dw. Based on this, we estimated that about 16,000 MPs were added to the agricultural plot amended with sludge. As expected, the sludge application significantly increased the MP concentration in soils. The control plot contained low MP concentrations (31-120 MPs kg-1 dw), potentially originating from atmospheric deposition. The plot treated five years prior to the experiment con-tained 226-412 and 177-235 MPs kg-1 dw at the start and end of the experiment, respectively; while the recently treated plot contained 182-231 and 138-288 MPs kg-1 dw. Our study shows that MP concentrations remain relatively constant in agricultural soils and that the MP infiltration capacity is very low. Surface water runoff had a negligible influence on the export of MPs from agricultural soils, mobilizing only 0.2-0.4% of the MPs added with sludge. We conclude that, in semi-arid regions, agricultural soils can be considered as long-term accumulators of MPs.
ER -
SCHELL, Theresa, Rachel HURLEY, Nina T. BUENAVENTURA, Pedro V. MAURI, Luca NIZZETTO, Andreu RICO a Marco VIGHI. Fate of microplastics in agricultural soils amended with sewage sludge: Is surface water runoff a relevant environmental pathway?*. \textit{Environmental Pollution}. OXFORD, OXON, ENGLAND: ELSEVIER SCI LTD, 2022, roč.~293, January 2022, s.~1-8. ISSN~0269-7491. Dostupné z: https://dx.doi.org/10.1016/j.envpol.2021.118520.
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