尼日利亚饮用水源中二氧的分布和毒性
Oluwaferanmi B Otitoju1,2, Moses O Alfred1,2, Chidinma G Olorunnisola1
1African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University PMB 230 Ede Osun State Nigeria unuabonahe@run.edu.ng alfredm@run.edu.ng +234 805 317 5971 +234 903 878 7959.
这项研究揭示了尼日利亚饮用水中的甲基醇 (CAT) 和基 (HQ) 污染,雨季期间的CAT含量较高. 这些污染物对婴儿和水生生物构成风险,需要进行水处理和监测.
科学领域:
- 环境化学环境化学
- 公共卫生 公共卫生
- 生态毒理学 生态毒理学
背景情况:
- 非洲的饮用水源正受到人类活动的越来越大的压力.
- 关于非洲供水中特定污染物的分布和毒性,如甲基醇 (CAT) 和基 (HQ) 的数据有限.
研究的目的:
- 确定尼日利亚西南部饮用水源中CAT和HQ的分布和季节性变化.
- 评估CAT和HQ对人类 (婴儿,幼儿) 和水生生物 (Daphnia) 构成的潜在风险.
- 调查水中CAT和HQ污染的来源.
主要方法:
- 在尼日利亚三个州,在12个月内收集了水样 (地下水和地表水).
- 使用分析方法量化了CAT和HQ的度.
- 使用多变量分析 (主要成分分析) 来推断污染源.
- 对人类健康和水生生物进行了毒性评估.
主要成果:
- 比HQ更频繁地检测到CAT,在雨季地下水中的平均度更高.
- 地下水中CAT的平均度为430微克L-1 (雨季) 和175微克L-1 (干季).
- 对CAT和HQ的人类源被确定为不同的来源.
- 婴儿和幼儿被确定为最脆弱的人口群体.
- 在CAT度下,对达芬尼亚菌有显著的急性和慢性风险.
结论:
- 尼日利亚饮用水源中CAT和HQ的存在和季节性变化突显出严重的环境和公共卫生问题.
- 对脆弱群体和水生生态系统的确定的风险强调了需要有效的水资源管理战略.
- 在水处理过程中定期监测和实施去除技术对于减轻与这些二基相关的风险至关重要.
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