孟加拉国苏尔玛河中的微塑料的表征和空间分布:评估水和沉积物的动态
Saif Izlal1, Fahim Mahafuz Ruhad1, Tariqul Islam1
1Department of Agricultural Construction and Environmental Engineering, Sylhet Agricultural University, Sylhet, Bangladesh.
概括
孟加拉国苏尔玛河的微塑料 (MP) 污染非常严重,水中的微塑料含量为12.33个/L,沉积物中的微塑料含量为522.67个/kg. 较小的MPs由于潜在的摄入和污染物运输而构成更大的生态威胁.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 海洋生物学 海洋生物学
背景情况:
- 微塑料 (MP) 是一个普遍存在的全球环境问题,特别是在水生生态系统中.
- 孟加拉国的苏尔玛河面临着人类活动可能造成的PM污染.
研究的目的:
- 在苏尔玛河的沉积物和地表水中调查MP的丰度,分布和特征.
- 评估与MP污染相关的生态风险,在这个重要的河流系统.
主要方法:
- 从苏尔玛河沿线的15个地点采集样本.
- 使用分析,湿过氧化氧化,密度分离和过来隔离MP.
- 通过立体显微镜分析对MP的表征.
主要成果:
- 在水中,MP的丰度为818物/L (平均12.33 ± 2.98),在沉积物中为3601120物/kg (平均522.67 ± 197.84).
- 主导MP特征:1-2毫米大小,沉积物中的碎片,水中的纤维,沉积物中的黑色,水中的透明.
- 在两个矩阵中,较小的MP的普及率更高,增加了生态风险.
结论:
- 苏尔玛河受到微塑料的严重污染,特别是较小的颗粒.
- MP的特征表明多种来源和气候变化过程.
- 迫切需要长期监测,生态影响研究和缓解策略,以制定有效的政策.
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