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The competition of heavy metals between hyporheic sediments and microplastics of driving factors in the Beiluo River Basin

Journal of Hazardous Materials 2024 19 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 50 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Mingchang Guan, Bingjie Li, Zeyu Chen, Bingjie Li, Yuting Zhang Bingjie Li, Mingchang Guan, Bingjie Li, Bingjie Li, Jinxi Song, Ruichen Mao, Yuting Zhang Mingchang Guan, Ruichen Mao, Zeyu Chen, Jinxi Song, Mingchang Guan, Bingjie Li, Yuting Zhang Jinxi Song, Jinxi Song, Jinxi Song, Mingchang Guan, Mingchang Guan, Yuting Zhang Yuting Zhang Yuting Zhang Zeyu Chen, Zeyu Chen, Mingchang Guan, Mingchang Guan, Yuting Zhang Bin Tang, Bingjie Li, Zeyu Chen, Jiayuan Feng, Jinxi Song, Ruichen Mao, Jiayuan Feng, Jinxi Song, Mingchang Guan, Yuting Zhang Mingchang Guan, Ruichen Mao, Jinxi Song, Jinxi Song, Jinxi Song, Bin Tang, Bin Tang, Ruichen Mao, Ruichen Mao, Nan Li, Nan Li, Bin Tang, Bin Tang, Bin Tang, Jinxi Song, Jiayuan Feng, Ruichen Mao, Ruichen Mao, Jiayuan Feng, Ruichen Mao, Ruichen Mao, Mingchang Guan, Jiayuan Feng, Jiayuan Feng, Mingchang Guan, Jiayuan Feng, Jiayuan Feng, Mingchang Guan, Mingchang Guan, Yuting Zhang

Summary

Researchers studied the competitive enrichment of heavy metals between river sediments and microplastics in the Beiluo River Basin. They found that while sediments generally had higher heavy metal concentrations overall, microplastics selectively accumulated certain metals at higher rates depending on environmental conditions. The study highlights that microplastics in river systems can act as carriers that redistribute heavy metal contamination in complex ways.

Study Type Environmental

Both sediments and microplastics (MPs) are medias of heavy metals (HMs) in river ecosystems. This study investigated HMs (Mn, Cr, V, As, Cu, Co, Cd, Pb, and Ni) concentration and driving factors for competitive enrichment between hyporheic sediments versus MPs. The medias basic characteristics indicated that the sediments were mostly sand and rich in FeO; three polymer types were identified, with blue, fragment, less than 500 µm being the main types of MPs. The results have shown that the average content of extracted HMs in MPs was much higher than that of the same metals accumulated in sediments. HMs in sediments and MPs reached heavily polluted at some points, among which As and Cd were ecological risks. Electrostatic adsorption and surface complexation, and biofilm-mediated and organic matter complexation were the interaction mechanism of HMs with sediments and MPs. Further, the driving factors affecting the distribution of HMs in the two carriers were analyzed by multivariate statistical analysis. The results demonstrated that carrier characteristics, hydrochemical factors, and the inherent metal load of MPs were the main causes of the high HMs content. These findings improved our understanding of HMs fate and environmental risks across multiple medias.

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