喜马拉雅山脉上部的甘河中的微塑料:发生情况,季节动态和生态风险
Manish Chaudhary1, Suman Rawat1, Surindra Suthar1
1School of Environment & Natural Resources, Doon University, Dehradun 248001, India.
The Science of the total environment
|February 14, 2025
概括
微塑料污染对甘河的严重威胁.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 河流生态 河流生态
背景情况:
- 支持5亿多人的甘河面临着由于有毒污染物的生态健康问题.
- 微塑料 (MP) 污染是全球主要河流系统的一个新兴问题.
- 了解MP的特征和分布对于评估河流生态系统健康至关重要.
研究的目的:
- 为了量化甘河在喜马拉雅山脉上游的微塑料污染.
- 分析与微塑料相关的特征,季节性变化和环境风险.
- 为了确定河水和沉积物中占主导地位的聚合物类型和粒子形态.
主要方法:
- 在6个月 (季风前和季风后) 期间,在高加河 (Devprayag,Rishikesh,Haridwar) 的19个地点进行了采样.
- 在水 (颗粒/L) 和沉积物 (颗粒/kg) 中微塑料颗粒的量化.
- 用于聚合物识别的微里叶变换红外光谱学 (μATR-FTIR);进行颗粒大小和类型分析.
主要成果:
- 平均微塑料度在水中的100-1550颗粒/L和沉积物中的50-1300颗粒/kg之间.
- 微塑料流量随着人口密度的增加而下游增加 (I区
- 纤维是主要的颗粒类型;聚乙烯,聚胺和聚烯是主要的聚合物.
结论:
- 在研究的甘河段中,微塑料污染水平表明污染水平极端,构成重大生态风险.
- 危险分类 (区域I和II:分类1;区域III:分类2) 突出了不同污染强度.
- 迫切需要塑料废物管理策略,考虑到旅游业和开放式垃圾处理等人类活动的影响.
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