从尼泊尔运输到喜马拉雅南部的酸盐:分布,来源分析和环境风险
Yifan Chen1, Yiyao Pan1, Chengzheng Ouyang1
1State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Environmental pollution (Barking, Essex : 1987)
|February 18, 2026
概括
酸盐 (PAE) 污染了尼泊尔的环境.
科学领域:
- 环境化学环境化学
- 大气科学 大气科学
- 污染物运输 污染物运输
背景情况:
- 西藏高原 (TP) 对于研究由于高海拔凝结而造成的污染物运输至关重要.
- 尼泊尔位于风向下,通过山谷连接,对监测大气运输至关重要.
- 酸盐 (PAE) 是一种常见的塑化剂,具有潜在的生态影响.
研究的目的:
- 调查尼泊尔的甲酸盐 (PAE) 主要来源和运输机制.
- 描述PAE在表面土壤中的分布和运输行为.
- 评估局部活动和区域大气过程对PAE污染的影响.
主要方法:
- 收集和分析了57个表面土壤样本以检测PAE度.
- 检查了与土地使用 (农业,森林,草地) 和海拔高度相关的PAE分布模式.
- 利用空间分析来确定PAE来源和分散模式.
主要成果:
- PAE度从37.7到1337 ng/g dw不等,其中2-乙基) 甲酸盐 (DEHP) 主导.
- 农业土壤的PAE平均水平最高,与塑料和灌有关.
- 随着高度的增加,PAE度下降,高KOA的同源体显示出长距离的运输潜力到TP.
结论:
- 加德满都被确定为尼泊尔的PAE重要来源,区域分散.
- 局部的人类活动和区域大气运输显著影响PAE污染模式.
- 持续使用塑料对PAE和其他塑化剂的TP造成了生态风险.
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