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The impacts of polypropylene microplastics on carbon and nitrogen cycling in coastal wetlands: Field evidence

Journal of Hazardous Materials 2025 Score: 38 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Xinqing Zou Yongcheng Ding, Yongcheng Ding, Teng Wang, Yongcheng Ding, Yongcheng Ding, Teng Wang, Teng Wang, Yongcheng Ding, Teng Wang, Teng Wang, Teng Wang, Teng Wang, Teng Wang, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yuan Feng, Hongyu Chen, Hongyu Chen, Teng Wang, Yongcheng Ding, Xinqing Zou Xinqing Zou Xinqing Zou Xinqing Zou Xinqing Zou Xinqing Zou Xinqing Zou Jianguo Tao, Yue Xue, Yongcheng Ding, Xinqing Zou Xinqing Zou Yue Xue, Yongcheng Ding, Teng Wang, Teng Wang, Teng Wang, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Teng Wang, Teng Wang, Teng Wang, Teng Wang, Teng Wang, Teng Wang, Hongyu Chen, Hongyu Chen, Zhuoyue Zhang, Jianguo Tao, Qihang Liao, Xinqing Zou Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Zhuoyue Zhang, Qihang Liao, Jianguo Tao, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Qihang Liao, Yongcheng Ding, Qihang Liao, Xinqing Zou Xinqing Zou Yongcheng Ding, Hongyu Chen, Yongcheng Ding, Yongcheng Ding, Teng Wang, Yongcheng Ding, Yongcheng Ding, Teng Wang, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Teng Wang, Yongcheng Ding, Yongcheng Ding, Hongyu Chen, Jianguo Tao, Jianguo Tao, Qihang Liao, Jianguo Tao, Jianguo Tao, Jianguo Tao, Yuyang Song, Qihang Liao, Qihang Liao, Qihang Liao, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Guanghe Fu, Yongcheng Ding, Xinqing Zou Teng Wang, Teng Wang, Guanghe Fu, Yongcheng Ding, Yue Xue, Yongcheng Ding, Teng Wang, Hongyu Chen, Teng Wang, Yue Xue, Yongcheng Ding, Yue Xue, Teng Wang, Yue Xue, Jianguo Tao, Qihang Liao, Guanghe Fu, Qihang Liao, Hongyu Chen, Guanghe Fu, Guanghe Fu, Guanghe Fu, Hongyu Chen, Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Teng Wang, Haiyan Lin, Xinqing Zou Yongcheng Ding, Yongcheng Ding, Yongcheng Ding, Guanghe Fu, Guanghe Fu, Guanghe Fu, Guanghe Fu, Guanghe Fu, Ming Lü, Guanghe Fu, Guanghe Fu, Guanghe Fu, Guanghe Fu, Guanghe Fu, Guanghe Fu, Guanghe Fu, Guanghe Fu, Guanghe Fu, Yongcheng Ding, Xinqing Zou Xinqing Zou Xinqing Zou Penghua Qiu, Guanghe Fu, Yongcheng Ding, Teng Wang, Guanghe Fu, Guanghe Fu, Xinqing Zou Guanghe Fu, Guanghe Fu, Xinqing Zou Teng Wang, Xinqing Zou Xinqing Zou Teng Wang, Rongcun Yang, Guanghe Fu, Guanghe Fu, Penghua Qiu, Xinqing Zou

Summary

Researchers conducted a three-month in-situ field investigation of polypropylene microplastic effects on sediment carbon and nitrogen cycling in both intertidal and supratidal zones of a coastal wetland. They found that high concentrations (2% w/w) of polypropylene microplastics significantly stimulated carbon-degrading enzyme activity, while the effects on total organic carbon and nitrogen cycling showed concentration-dependent variation across wetland zones.

Polymers

Study Type Environmental

Coastal wetlands are hotspots for carbon and nitrogen cycling and serve as sinks for microplastics (MPs). Although MP effects on these biogeochemical cycles have been investigated under laboratory experiments, field-based evidence is lacking. This study presents the first field investigation of MP impacts, specifically polypropylene (PP), on sediment carbon and nitrogen cycling in intertidal and supratidal zones of a coastal wetland, employing in-situ culture over three months. Regarding carbon cycling, PP MPs exerted similar effects across zones and showed distinct concentration-dependent variations. 0.2 % (w/w) PP MPs had no significant effect on carbon cycling in either zone, whereas 2 % (w/w) PP MPs significantly stimulated carbon-degrading enzyme activity but did not affect total organic carbon content. For nitrogen cycling, the impact of PP MPs exhibited pronounced spatial heterogeneity. In the intertidal zone, both concentrations had no effect on ammonium and nitrate, whereas in the supratidal zone, they significantly altered inorganic nitrogen levels, with ammonium responses varying by MP concentration. Compared to existing laboratory findings, our field study suggests MP impacts on carbon and nitrogen cycling in coastal wetlands, particularly in the intertidal zone, are less pronounced. These findings provide a more practical understanding of the ecological impacts of MPs in coastal wetlands.

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