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Microplastic pollution in rice-fish co-culture system: A report of three farmland stations in Shanghai, China

Lv, Weiwei, Zhou, Wenzong, Lu, Shibo, Huang, Weiwei, Yuan, Quan, Tian, Minglu, Lv, Weiguang, He, Defu·2019·Science of The Total Environment

Abstract

Microplastics are emerging contaminants of increasing concern. Despite the occurrence of microplastics in farmland soils, the knowledge on microplastics in rice-fish co-culture ecosystems is limited. In this study, we investigated the distribution of microplastics in three rice-fish culture stations in Shanghai. During non-rice and rice-planting periods, microplastics in water, soils and aquatic animals (eel, loach and crayfish) were systematically assayed using methods of NaCl density extraction, H2O2 digestion and micro-fourier transform infrared spectroscopy. Results showed that average microplastic abundances were 0.4 ± 0.1 items L-1, 10.3 ± 2.2 items kg-1, 1.7 ± 0.5 items individual-1 in water, soils and aquatic animal samples, respectively. We found an increasing trend in microplastic abundances in water, soil and animal samples from non-rice period to rice-planting period. Almost all of microplastics were found in digestive tracts of animals. Major microplastics were small (<1 mm) polyethylene and polypropylene fibers, with color of white and translucent. Size, shape, color and polymer type distributions of microplastics were similarly found in environmental and animal samples. Moreover, microplastic abundances in aquatic animals correlated to abundance in farmland soils. This study, for the first time, reveals the occurrence and characteristics of microplastic pollution in rice-fish culture ecosystem which suggests the potential ecological risks of microplastics in the agroecosystem.

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Metadata

Authors
Lv, W., Zhou, W., Lu, S., Huang, W., Yuan, Q., Tian, M., Lv, W., & He, D.
Venue
Science of The Total Environment
Publisher
Elsevier BV
Published
2019-02
Volume
652
Pages
1209-1218
ISSN
0048-9697 (ISSN-L)
OpenAlex
W2898472576
Cited by
384
References
2
FWCI
10.37
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Microplastic pollution in rice-fish co-culture system: A report of three farmland stations in Shanghai, China. https://app.cochat.ai/papers/10.1016/j.scitotenv.2018.10.321
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Lv, W., Zhou, W., Lu, S., Huang, W., Yuan, Q., Tian, M., Lv, W., & He, D. (2019). Microplastic pollution in rice-fish co-culture system: A report of three farmland stations in Shanghai, China. Science of The Total Environment. https://doi.org/10.1016/j.scitotenv.2018.10.321

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