在卡拉尔卡哈尔湖的不同环境组件中对微塑料的评估和处理 - - 一个案例研究
Amtul Bari Tabinda1, Azka Maqsood2, Javairia Ansar2
1Sustainable Development Study Center, Government College University, Lahore, Pakistan. amtulbaritabinda@gcu.edu.pk.
Environmental monitoring and assessment
|February 11, 2025
概括
这项研究量化了巴基斯坦卡拉尔卡哈尔湖的微塑料 (MP) 污染,在水,沉积物和鱼类中发现了显著的MP水平. 新的磁化和凝固处理有效地从水中去除了80%以上的微塑料.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 生态毒理学 生态毒理学
背景情况:
- 微塑料 (MP) 污染是一个日益严重的全球性问题,对生态产生重大影响.
- 关于巴基斯坦淡水生态系统中MP污染的数据有限.
- 巴基斯坦旁遮普省的卡拉尔卡哈尔湖被选中,以解决这一知识缺口.
研究的目的:
- 量化,描述和确定MP在卡拉尔卡哈尔湖水,沉积物和鱼类中的分布.
- 为了评估两种MP去除处理过程的有效性:磁化和凝结+花.
- 为未来的淡水MP污染研究在该地区建立基线数据.
主要方法:
- 采用抓取样本来收集水,沉积物和鱼样.
- 使用立体显微镜和里埃变换红外光谱 (ATR-FTIR) 量化和表征了微塑料.
- 使用铁矿石磁化和化学凝结/花块化技术评估了MP去除效率.
主要成果:
- 平均MP丰度:49.6MP/500mL (水),143MP/100g (沉积物) 和79个项目 (鱼类).
- 主要的MP颜色是蓝色,透明色和绿色;识别的聚合物包括PPS,PIB,PLF,PET,PE,PP和天然乳.
- 磁化处理实现了80%的MP去除率,而凝固达到高达85%的去除率.
结论:
- 该研究提供了关键的巴基斯坦淡水湖中的微塑料污染的关键基线数据.
- 磁化和凝固 + flokulation 两种方法都显示出有效地从地表水中去除 MP 的高潜力.
- 这些发现表明,一种新的,整合性的方法来缓解MP污染,具有商业应用前景.
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