使用累积分布函数对地下水中新出现的有机污染物的污染源划分
Lufuno Ligavha-Mbelengwa1,2, Modreck Gomo3, Dan J Lapworth4
1Council for Geoscience, 280 Pretoria Street, Silverton, Pretoria, 0184, South Africa. lligavhambelengwa@geoscience.org.za.
Environmental monitoring and assessment
|August 12, 2025
概括
本研究引入了一种使用累积分布函数 (CDF) 的统计方法,以设定地下水中新出现的有机污染物 (EOC) 的局部值. 这种方法有助于识别来自家庭和工业活动的污染源.
科学领域:
- 水文地质学 水文地质学
- 环境化学环境化学
- 水资源管理 水资源管理
背景情况:
- 累积分布函数 (CDF) 是用于划定地下水污染源的统计工具.
- 在地下水研究中对新出现的有机污染物 (EOC) 应用CDF仍未得到充分研究.
- 了解EOC来源对于有效地评估和管理地下水质量至关重要.
研究的目的:
- 应用CDF方法来确定地下水中的特定EOCs的当地值.
- 为了将这些新的EOC值与传统的标记物 (Cl,NO3,Cl/Br比率) 进行比较,用于源区分.
- 根据EOC度和追踪器数据评估人类对地下水质量的影响.
主要方法:
- 利用基于累积分布函数 (CDF) 的统计方法来确定当地EOC值.
- 将已确定的EOC值与传统的水地化学标记物进行比较,包括化物 (Cl),酸盐 (NO3) 和Cl/Br比率.
- 根据Cl与NO3的关系将地下水样本分类为类型,以推断污染来源.
主要成果:
- 对于阿特拉辛 (0.0032μg/L),双A (0.033μg/L),卡巴马西平 (0.0054μg/L) 和咖啡因 (0.01μg/L) 的已确定的当地EOC值.
- 连接的EOC值超越到具有人为影响的地点,包括住宅区,矿山尾矿和工业区.
- 确定了与不同污染源相关的不同的地下水类型 (类型1和类型2),例如家庭/农业排水和工业/矿业排放.
结论:
- CDF方法有效地建立了评估地下水中人为污染的当地EOC值.
- 环境污染物值为污染源提供了有价值的见解,补充了传统的追踪剂.
- 这种方法可以扩展到开发改善水资源管理的区域值.
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