制药活性化合物在南非开普敦沿海水域的发生和潜在危险
Brent Kenneth Newman1, Anisha Velayudan2, Mira Petrović3
1Coastal Systems and Earth Observation Research Group, Council for Scientific and Industrial Research (CSIR), Postnet Suite 367, Private Bag X10, Musgrave Road, Durban 4062, South Africa.; Nelson Mandela University, P.O. Box 77000, Port Elizabeth 6031, South Africa.
在开普敦检测到药用活性化合物 (PhACs).
科学领域:
- 环境化学环境化学
- 评估水质水质的评估.
- 生态毒理学 生态毒理学
背景情况:
- 在水生环境中药用活性化合物 (PhAC) 的广泛存在是全球日益关注的问题.
- 了解南非地表水中的PhAC污染对于评估生态风险至关重要.
研究的目的:
- 调查开普敦沿海和河流地表水中33种PhAC的存在和度.
- 通过使用预测无效度 (PNEC) 来评估被检测到的PhAC所带来的潜在生态危害.
主要方法:
- 在冬季和夏季,在28个沿海和5个河流地区采样地表水.
- 通过使用既有分析技术,对33个选定的PhAC进行分析.
- 计算危险系数 (HQs) 以评估生态毒理风险.
主要成果:
- 在两个季节的所有调查地点检测到PhAC,发现了25-27种化合物.
- 酸是最广泛的PhAC;度从41ng/L到18.9μg/L不等.
- 许多PhAC,包括阿齐思罗米和布洛芬,呈现危险系数>1,表明潜在的生态风险.
结论:
- 开普敦的地表水被各种PhAC污染,造成潜在的生态危害.
- 污水处理厂的排放是PhAC污染的重要来源.
- 高度的PhAC可能会导致抗生素耐药性,并对水生生物构成风险.
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