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表面和地下水中的新兴有机化合物反映了撒哈拉以南城市的城市动态

B Djieugoue¹, B Nlend², S Ngo Boum-Nkot²

¹Université de Douala, Faculté des Sciences, Douala, P.O. BOX 24157, Cameroon; National Engineering School of Sfax, Laboratory of Radio-Analyses and Environment, BP1173, 3038 Sfax, Tunisia.

The Science of the total environment

|October 29, 2024

概括

新兴的有机污染物 (EOC) 由于快速城市化,污染了撒哈拉以南非洲的水资源. 这些EOC对水生生物构成重大环境风险,凸显了可持续水资源管理的迫切需要.

科学领域:

环境化学环境化学
生态毒理学生态毒理学
评估水质水质的评估.

背景情况:

撒哈拉以南非洲地区的快速城市化增加了合成化学品的使用,导致新兴有机污染物 (EOC) 污染水域.
该地区的收入有限往往导致在消费之前对水资源和渔业资源的控制不足.
EOCs被用作水资源质量恶化的指标,并评估对水生生物的潜在风险.

研究的目的:

在喀麦隆杜阿拉市的水资源中调查EOC的存在和水平.
为了分类检测到的EOC,并确定它们的来源和贡献土地使用模式.
通过使用风险系数 (RQ) 来评估EOC对水生生物构成的环境风险.

主要方法:

在22个地点检测和量化120个目标EOC,包括河流和地下水.
检测到的EOC被分类为药品/个人护理产品,生活方式和工业化合物.
风险系数 (RQ) 的计算,以评估已识别的EOCs的生态风险.

主要成果:

检测到66种EOC,其中药品和个人护理产品是最普遍的.
地表水的EOC度 (高达61,273 ng/L) 比地下水 (高达16,677 ng/L) 更高.
污染水平与土地使用相关,家庭,医院和酒厂的废水,垃圾填埋场和坑洞所被确定为主要来源.

结论:

这项研究揭示了中非前所未有的高水平的EOC污染,对水生生物构成严重威胁.
物理化学性质和消费模式影响地下水中的EOC发生.
紧急实施可持续的水资源管理战略对于该地区的城市地区至关重要.

关键词:

经济合作社 (EOC) 是一个经济合作社.环境风险环境风险地下水资源地下水资源土地使用情况土地使用情况表面的水是表面的水.城市化的城市化.

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