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Co-effects of biofouling and inorganic matters increased the density of environmental microplastics in the sediments of Bohai Bay coast

The Science of The Total Environment 2019 76 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 40 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Nan Wu Nan Wu Nan Wu Nan Wu Nan Wu Nan Wu Nan Wu Nan Wu Nan Wu Nan Wu Nan Wu Nan Wu Ying Zhang, Nan Wu Nan Wu Xiaohan Zhang, Xiaohan Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Yongzheng Ma, Yongzheng Ma, Nan Wu Zhiguang Niu, Zhiguang Niu, Jiafu Li, Ying Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Nan Wu Yongzheng Ma, Ying Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Yongzheng Ma, Wenjie Li, Ying Zhang, Nan Wu Yongzheng Ma, Zhiguang Niu, Zhiguang Niu, Zhiguang Niu, Ying Zhang, Junyi Wang, Ying Zhang, Ying Zhang, Zhiguang Niu, Jiahui He, Ying Zhang, Xiaohan Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Ying Zhang, Zhiguang Niu, Yongzheng Ma, Ying Zhang, Jiahui He, Ying Zhang, Nan Wu Nan Wu Yongzheng Ma, Yongzheng Ma, Zhiguang Niu, Jiafu Li, Jiafu Li, Yongzheng Ma, Ying Zhang, Ying Zhang, Zhiguang Niu, Ying Zhang, Ying Zhang, Zhiguang Niu, Yongzheng Ma, Yongzheng Ma, Jiafu Li, Zhiguang Niu, Yongzheng Ma, Yongzheng Ma, Zhiguang Niu, Ying Zhang, Zhiguang Niu, Ying Zhang, Yongzheng Ma, Ying Zhang, Zhiguang Niu, Zhiguang Niu, Ying Zhang, Ying Zhang, Yongzheng Ma, Ying Zhang, Nan Wu Nan Wu Nan Wu Nan Wu

Summary

Researchers investigated microplastic characteristics and density changes in coastal sediments of Bohai Bay, finding that biofouling and inorganic matter accumulation significantly increased the density of low-density polyethylene and polypropylene particles, altering their environmental fate and sedimentation behavior.

Study Type Environmental

Size, shape and color are the basic parameters of environmental microplastic (MPs). However, the density of microplastics which is an important parameter to influence the fate of MPs in the environment has not been measured. Meanwhile, the MPs characteristics from coastal sediments of Bohai Bay remain unclear. In this study, the concentrations, distribution and composition (shapes and sizes) of MPs were investigated. The average concentration of MPs in the coastal sediments of Bohai Bay was 192.3 ± 138.9 items/kg dw, which was at a moderate pollution level. The MPs with fiber shape (54.5%), small size (52.0%) and low density (PE and PP) were dominant. In addition, flotation experiment showed that most of PE and PP had the higher density compared with seawater. Digestion experiments suggested that the density change of MPs was caused by the co-contribution of biofouling and inorganic minerals. The density increasing rates of PE and PP were 7.4%-12.6% and 12.1%-17.5%, respectively. Finally, we also estimated that the total number of MPs in the sediments of Bohai Sea was 534 trillion, which were significantly higher than that in global ocean surface, suggesting that the coastal sediments could be the sink of MPs.

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