表面水和来自印度洋东部的 nekton 中的微和中塑性污染:时空变化,相关性和风险评估
Chao Fang1, Shigang Liu2, Fulong Gao1
1Key Laboratory of Marine Ecological Conservation and Restoration, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361005, China.
Environmental research
|November 16, 2024
概括
印度洋东部的微型和中型塑料 (MMP) 污染在2021年至2022年间在中显著增加,但在地表水中没有. 尼克顿是MMP污染的更好的指标,而不是地表水,强调需要监测.
科学领域:
- 海洋生物学 海洋生物学
- 环境科学 环境科学
- 海洋学 海洋学 海洋学
背景情况:
- 印度洋东部 (EIO) 的微型和中等塑料 (MMP) 污染情况尚不清楚.
- 塑料污染对海洋生态系统和人类健康构成重大威胁.
研究的目的:
- 评估EIO中MMP污染的时空变化.
- 为了比较MMP在 nekton和地表水中的丰度.
- 确定在EIO中导致MMP污染的来源和危险聚合物.
主要方法:
- 在2021年和2022年从EIO收集的 nekton和地表水样本.
- 量化了MMP的丰富度,分析了聚合物组成,颜色和形状.
- 对地表水和 nekton 的计算风险指数.
主要成果:
- 从2021年到2022年, nekton中的MMP丰度显著增加,而地表水的丰度没有显著变化.
- 尼克顿,特别是阴影漂流鱼,比之前观察到的MMP摄入量更高.
- 聚烯, rayon 和聚是 nekton 中的主要聚合物,这表明面膜和织品的污染.
- 与表面水不同的是,Nekton在MMP污染中表现出空间变化,这表明它们作为污染指标的实用性.
- 表面水中的MMP污染和尼克顿之间没有发现显著的相关性,这表明摄入途径不同.
- 在全球范围内,MMP污染的风险指数达到中等至高水平.
- 环氧树脂,和聚烯+烯被确定为最危险的聚合物.
结论:
- 在EIO中MMP污染是一个越来越令人担忧的问题,特别是在 nekton社区内.
- 尼克顿作为监测MMP污染动态的有效生物指标.
- 需要有效的策略来减轻塑料污染,重点关注危险的聚合物类型和各种摄入途径.
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