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Influences of coexisting aged polystyrene microplastics on the ecological and health risks of cadmium in soils: A leachability and oral bioaccessibility based study

Journal of Hazardous Materials 2024 23 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 65 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Xiaochen Chen, Xiaochen Chen, Xianhua Liu Xiaochen Chen, Ao Wang, Xianhua Liu Zeng-Di Zhang, Zeng-Di Zhang, Xianhua Liu Xiaochen Chen, Xianhua Liu Xiaochen Chen, Xianhua Liu Ao Wang, Xianhua Liu Xianhua Liu Junjie Wang, Xiaochen Chen, Xianhua Liu Xianhua Liu Zeng-Di Zhang, Zeng-Di Zhang, Xiaochen Chen, Xianhua Liu Xiaochen Chen, Jianying Yu, Jianying Yu, Xianhua Liu Xianhua Liu Xianhua Liu Xianhua Liu Jianying Yu, Jianying Yu, Xianhua Liu Jianying Yu, Jianying Yu, Xianhua Liu Xianhua Liu Xianhua Liu Xianhua Liu Xiaochen Chen, Ying-Jie Yan, Ying-Jie Yan, Jianyu Zhang, Xianhua Liu Xianhua Liu Xianhua Liu Xianhua Liu Xiaochen Chen, Xiaochen Chen, Xianhua Liu Xianhua Liu Xianhua Liu Jia Niu, Jia Niu, Xiaochen Chen, Xianhua Liu Xianhua Liu Jia Niu, Jia Niu, Xianhua Liu Xianhua Liu Xianhua Liu Xianhua Liu Xiaochen Chen, Xianhua Liu Xianhua Liu Xianhua Liu Xiaoyu Cui, Xiaoyu Cui, Xianhua Liu Xianhua Liu Xianhua Liu Jianyu Zhang, Xianhua Liu Xiaoyu Cui, Xiaoyu Cui, Xianhua Liu Xianhua Liu Xianhua Liu Xianhua Liu Xianhua Liu Xianhua Liu Xianhua Liu Xianhua Liu

Summary

This study tested whether the presence of aged microplastics in soil changes how easily the toxic heavy metal cadmium can enter the human body through accidental soil ingestion. The results showed that aged polystyrene microplastics actually reduced cadmium absorption in the stomach phase, though the effect varied by soil type. This suggests that the interaction between microplastics and other pollutants in soil creates a complicated picture for assessing human health risks.

Polymers

Body Systems

Digestive

Study Type In vitro

Whether coexisting microplastics (MPs) affect the ecological and health risks of cadmium (Cd) in soils is a cutting-edge scientific issue. In this study, four typical Chinese soils were prepared as artificially Cd-contaminated soils with/without aged polystyrene (PS). TCLP and in vitro PBET model were used to determine the leachability (ecological risk) and oral bioaccessibility (human health risk) of soil Cd. The mechanisms by which MPs influence soil Cd were discussed from direct and indirect perspectives. Results showed that there was no significant difference in the leachability of soil Cd with/without aged PS. Additionally, aged PS led to a significant decrease in the bioaccessibility of soil Cd in gastric phase, but not in small intestinal phase. The increase in surface roughness and the new characteristic peaks (e.g., Si-O-Si) of aged PS directly accounted for the change in Cd bioaccessibility. The change in organic matter content indirectly accounted for the exceptional increase in Cd bioaccessibility of black soil with aged PS in small intestinal phase. Furthermore, the changes in cation exchange capacity and Cd mobility factor caused by aged PS explained the change in Cd leachability. These results contribute to a deeper understanding about environmental and public health in complicated emerging scenarios.

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