微塑料和重金属污染沿着在喜马拉雅山河流域的土地使用梯度:流行和控制因素
Sunil Kumar1, Diptimayee Behera1, Kumar Ajay1
1Indian Institute of Science Education and Research Mohali, 140306, Punjab, India.
Journal of contaminant hydrology
|August 17, 2024
概括
微塑料 (MP) 和重金属在马尔坎达河上共存,MP在水和沉积物中广泛存在. 虽然金属相互关联,但它们与MP的联系很弱,造成生态风险.
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:
- 微塑料 (MP) 和重金属污染是水生系统中的重大环境问题.
- 淡水生态系统中MPs和重金属之间的关系尚不清楚.
- 这项研究调查了印度西北部马尔坎达河的MP流行和分布.
研究的目的:
- 评估马尔坎达河水和沉积物中的微塑料的分布和丰度.
- 为了确定影响微塑料分布的因素.
- 分析重金属度及其与微塑料水平的相关性.
主要方法:
- 从水和沉积物样本中提取了微塑料,使用密度分离.
- 微塑料的识别和分类使用光显微镜和拉曼光谱进行.
- 在水中使用ICP-MS进行重金属分析,在MP上使用SEM-EDX进行表面元素表征.
主要成果:
- 微塑料污染很普遍,其度在地表水中为10-530颗L-1粒子,在沉积物中为1330-4330颗kg-1dw粒子.
- 颗粒和碎片是主要的MP类型,主要是聚乙烯和聚烯.
- 下游发现含量升高,受人类活动的影响,大多数重金属和MP之间的相关性很弱,除了.
结论:
- 受到重金属污染的微塑料对淡水生态系统安全构成潜在威胁.
- 工业附近和人类居住等因素影响了MP的丰富性.
- 减少塑料污染的管理策略对于全球环境健康至关重要.
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