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Distribution characteristics and mechanism of microplastics mediated by soil physicochemical properties

The Science of The Total Environment 2020 177 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Yuanyuan Luo, Xuetao Guo Yibo Xu, Xuetao Guo Yibo Xu, Xuetao Guo Yuanyuan Luo, Xuetao Guo Yibo Xu, Yangyang Zhang, Yibo Xu, Yibo Xu, Yangyang Zhang, Yuanyuan Luo, Yuanyuan Luo, Yuanyuan Luo, Xuetao Guo Yibo Xu, Xuetao Guo Xuetao Guo Xuetao Guo Yibo Xu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Yangyang Zhang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Yibo Xu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Yangyang Zhang, Yangyang Zhang, Yibo Xu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Lingyan Zhu, Xuetao Guo Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Lingyan Zhu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Lingyan Zhu, Lingyan Zhu, Xuetao Guo Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Lingyan Zhu, Xuetao Guo Lingyan Zhu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Lingyan Zhu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Lingyan Zhu, Xuetao Guo Xuetao Guo

Summary

Five Chinese soils varied considerably in their capacity to adsorb polystyrene microplastics, with soil organic carbon content showing the strongest positive correlation and clay content showing a negative correlation. The results help predict how soil composition will determine the fate and mobility of microplastics in different agricultural and natural landscapes.

Polymers

Interaction between microplastics and soil is essential for the environmental fate of plastic particles. In this study, polystyrene microplastic particles (PSMPs) with a size of 0.047 μm were selected as the representative of microplastics. Five soil samples from different provinces in China were selected (named Harbin S1, Huainan S2, Jiangxi S3, Shaanxi S4 and Hainan S5, respectively) and their interaction characteristics and mechanism with PSMPs were investigated, which provided new insights into the environmental behavior of microplastics. The experimental data showed that the pseudo-first-order model well fit for the sorption kinetics data, and the microplastic sorption ability of the soil accorded with the following sequence: S3 > S2 > S1 > S4 > S5. The sorption isotherm data of PSMPs on soils fit a linear model well (R = 0.998). The sorption of MPs on soils was affected by pH, and the sorption ability weakened as the pH increased. Soil physicochemical properties play important roles in sorption of PSMPs, especially the content of soil organic carbon. The sorption capacity was positively correlated with soil organic carbon (R = 0.999) and FeO content (R = 0.967), while the sorption of clay showed opposite trend (R = 0.952). The sorption mechanisms of PSMPs on soils included surface sorption, electrostatic and hydrophobic interactions. Results of this study could be useful to better study the role of soil in the fate and transportation of plastic particles.

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