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Are microplastics in livestock and poultry manure an emerging threat to agricultural soil safety?

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Abstract

Microplastics (MPs) have attracted much attention in recent years, due to the difficulty of degradation and threats to ecological systems and humans. Based on the analysis of 1429 articles on MPs in soil, we found that we know little about the behavior and fate of manure-born MPs from the livestock and poultry production systems to agriculture soils. This review summarizes the analytical methods for sampling, separation, and identification and the occurrence of MPs in livestock and poultry manure, mainly based on 7 surveys related to manure-born MPs. Then, the sources, fate, and environmental risks of MPs in livestock and poultry manure are discussed. MPs, heavy metals, pathogens, antibiotic resistance genes, and persistent organic pollutants are common pollutants in livestock and poultry manure. Worse, manure-born MPs will become smaller, rougher, and more numerous and could easily form more toxic compound pollution after complicated processes of manure treatment, which seriously threatens agricultural soil safety. Finally, an outlook is offered for future research. We hope this article to attract attention to the risks of MPs in livestock and poultry manure and provide a reference for future research.

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Funding

This research was partially supported by the National Natural Science Foundation of China (52209048, 52109083, and 52079010); the Scientific Research Fund of Hunan Provincial Education Department, China (22A0206).

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Authors

Contributions

YL: conceptualization, methodology, writing—original draft, writing—review and editing, and resources. YZ: investigation, formal analysis, writing—original draft, and writing—review and editing. ZZ: investigation and methodology. RL: investigation. ZQ: investigation. YQ: investigation. JL: investigation. WW: investigation. XL: investigation. LY: conceptualization, methodology, supervision, resources, and writing—review and editing. XW: conceptualization, methodology, supervision, resources, and writing—review and editing.

Corresponding author

Correspondence to Xiaofeng Wen.

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This study did not involve human or animal subjects.

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Written informed consent for publication of this paper was obtained from all authors.

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The authors declare no competing interests.

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Responsible Editor: Kitae Baek

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Long, Y., Zhang, Y., Zhou, Z. et al. Are microplastics in livestock and poultry manure an emerging threat to agricultural soil safety?. Environ Sci Pollut Res 31, 11543–11558 (2024). https://doi.org/10.1007/s11356-024-31857-6

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  • DOI: https://doi.org/10.1007/s11356-024-31857-6

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