在一个亚热带农村休湖揭示微塑料污染:一个新的洞察力
Abu Reza Md Towfiqul Islam1, Mehedi Hasan2, Moriom Rahman Sadia2
1Department of Disaster Management, Begum Rokeya University, Rangpur 5400, Bangladesh; Department of Development Studies, Daffodil International University, Dhaka, 1216, Bangladesh.
Environmental research
|February 28, 2024
概括
微塑料 (MP) 污染在孟加拉国普遍存在.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 分析化学 分析化学
背景情况:
- 全球关注城市湖泊中的微塑料 (MP) 污染,却忽视了农村地区.
- 像孟加拉国尼克利湖这样的农村娱乐湖是研究不足的生态系统.
- 了解这些环境中的MP污染对生态系统健康至关重要.
研究的目的:
- 调查尼克利湖的国会议员的规模,组成,数量和分布.
- 为了确定导致农村休湖中的MP污染的因素.
- 建立对孟加拉国淡水生态系统中MP污染的基本理解.
主要方法:
- 从尼克利湖的十个地点收集了30个水和30个沉积物样本.
- 使用密度分离提取的MP.
- 使用立体显微镜,富里埃变换红外光谱 (FTIR) 和场辐射扫描电子显微镜 (FE-SEM) 进行了MP的特征化.
主要成果:
- 在所有样本中发现了显著的MP流行率 (沉积物:109.67 ± 10.89个/kg dw;水:98.17 ± 12.85个/m3).
- 小MP (<0.5毫米),碎片和透明颗粒占主导地位.
- 聚烯 (PP) 和聚乙烯 (PE) 是主要的聚合物;MP水平与外流相关,与入流和深度负相关.
结论:
- 尼克利湖受到微塑料的严重污染,受到污水排放和农业下水等当地活动的影响.
- 污染指数证实了MP的存在,表明存在潜在风险.
- 这项研究为孟加拉国农村地区的PM污染提供了基础数据库,突出了生态毒理学和立法研究的需要.
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