[抗生素在中国地表水中的发生和环境风险]
概括
抗生素污染在中国普遍存在.
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:
- 表面水中的抗生素存在抗生素耐药性基因 (ARG) 的风险.
- 关于中国地表水域的抗生素污染和生态风险的数据有限.
- 像抗生素这样的新兴污染物需要全面的风险评估.
研究的目的:
- 建立一个关于中国地表水 (2018-2022) 中抗生素污染的综合数据集.
- 分析抗生素的发生,分布和生态风险.
- 为监测和风险管理确定优先的抗生素.
主要方法:
- 从124篇文章中汇总了数据,包括128种抗生素的3,368个度值.
- 分析了抗生素度,季节性变化和空间分布.
- 应用水生生态风险评估模型和加权频率分析.
主要成果:
- 抗生素度从ng/L到μg/L不等,硫胺和诺经常被检测到高水平.
- 污染水平没有显著的年度变化,但在夏季较低.
- 在中国各地观察到明显的抗生素污染的空间模式.
- 确定优先的抗生素:清素,红素,硫甲醇,奥洛素和氧环素.
结论:
- 在中国的地表水域存在严重的抗生素污染,造成生态风险.
- 目前的研究在评估发生和生态影响方面存在缺陷.
- 建议提供了对优先抗生素的查策略和监测.
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