Influence of eco-friendly float replacement on microplastic pollution and their metal adsorption behavior in Sanggou Bay, China.

IF 3.2 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Marine environmental research Pub Date : 2025-10-04 DOI:10.1016/j.marenvres.2025.107590

Qi Sui, Hao Wang, Guoshun Liu, Xiaoli Chen, Xuemei Sun, Lin Zhu, Manman Wei, Zhihua Feng, Bin Xia

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引用次数: 0

Abstract

Mariculture regions represent significant hotspots for microplastic (MP) pollution. While eco-friendly floats are increasingly replacing conventional counterparts, the efficacy of this intervention in mitigating MP pollution and its implications for metal adsorption behavior in the marine environment remain poorly characterized. This study investigated the influence of eco-friendly float replacement on MP pollution and their metal adsorption behavior in Sanggou Bay, China. The results showed that the average abundance of MPs was 4.50 ± 0.57 items/L in surface seawater and 1872.86 ± 138.68 items/kg in sediments, respectively. MPs smaller than 0.5 mm and fibers in shape were dominated in both surface seawater and sediments. Transparent MPs were most prevalent, with polyethylene (PE), polypropylene (PP), and polystyrene (PS) as the dominant polymers. Following the replacement of conventional floats with eco-friendly floats, MP abundance in surface seawater decreased by 77.57 %. Notably, MP toxicity equivalent values in both seawater and sediment were significantly declined, indicating that eco-friendly floats effectively alleviate MP pollution. Analysis of metal adsorption onto MPs in surface seawater indicated that Mn, Cr, and Cu accounted for >84 % of total adsorption. Adsorption behavior was influenced by MP size, polymer type, and ambient metal concentrations. These findings highlight eco-friendly floats as an effective mitigation strategy to reduce MP pollution and advance understanding of the fate and risk of MPs in mariculture ecosystem.

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生态浮子置换对桑沟湾微塑料污染的影响及其金属吸附行为

海水养殖区是微塑料污染的重要热点。虽然生态友好型漂浮物越来越多地取代传统的漂浮物，但这种干预措施在减轻MP污染方面的效果及其对海洋环境中金属吸附行为的影响仍不清楚。研究了生态浮子置换对桑沟湾环境污染的影响及其对金属的吸附行为。结果表明，表层海水中MPs的平均丰度为4.50±0.57项/L，沉积物中MPs的平均丰度为1872.86±138.68项/kg。表层海水和沉积物中均以粒径小于0.5 mm的微微粒和纤维状微微粒为主。透明MPs最为普遍，以聚乙烯（PE）、聚丙烯（PP）和聚苯乙烯（PS）为主要聚合物。将传统浮子替换为环保浮子后，表层海水中MP丰度下降了77.57%。值得注意的是，海水和沉积物中的MP毒性当量均显著下降，表明生态友好型漂浮物有效缓解了MP污染。表面海水中MPs对金属的吸附分析表明，Mn、Cr和Cu占总吸附量的84%。吸附行为受MP粒径、聚合物类型和环境金属浓度的影响。这些研究结果强调了生态友好型浮体是一种有效的缓解策略，可以减少海洋养殖生态系统中浮游生物的污染，并促进对浮游生物命运和风险的了解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Marine environmental research 环境科学-毒理学

CiteScore

5.90

自引率

3.00%

发文量

217

审稿时长

46 days

期刊介绍： Marine Environmental Research publishes original research papers on chemical, physical, and biological interactions in the oceans and coastal waters. The journal serves as a forum for new information on biology, chemistry, and toxicology and syntheses that advance understanding of marine environmental processes. Submission of multidisciplinary studies is encouraged. Studies that utilize experimental approaches to clarify the roles of anthropogenic and natural causes of changes in marine ecosystems are especially welcome, as are those studies that represent new developments of a theoretical or conceptual aspect of marine science. All papers published in this journal are reviewed by qualified peers prior to acceptance and publication. Examples of topics considered to be appropriate for the journal include, but are not limited to, the following: – The extent, persistence, and consequences of change and the recovery from such change in natural marine systems – The biochemical, physiological, and ecological consequences of contaminants to marine organisms and ecosystems – The biogeochemistry of naturally occurring and anthropogenic substances – Models that describe and predict the above processes – Monitoring studies, to the extent that their results provide new information on functional processes – Methodological papers describing improved quantitative techniques for the marine sciences.