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| 长江南京段新兴污染物污染特征及风险评估 |
| Occurrence and Ecological Risk Assessment of Emerging Pollutants in Surface Water at Nanjing Section in the Yangtze River |
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| DOI： |
| 中文关键词: 新兴污染物 污染特征 生态风险评估 长江南京段 |
| 英文关键词: Emerging pollutants Pollution characteristics Ecological risk assessment Nanjing section of Yangtze River |
| 基金项目:国家自然科学基金资助项目(51279061)；江苏高校品牌专业建设工程基金资助项目 |
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| 中文摘要: |
| 在长江南京段上游至下游依次布设6个采样点采集水样，使用固相萃取和LC-MS/MS相结合的方法对5种选定药物的质量浓度进行测定，并采用风险熵模型评估其生态风险。结果表明，6个采样点均检测到药物存在。其中，四环素、红霉素、罗红霉素和氯霉素的检出率为100%，最高检出值为10.29 ng/L（氯霉素）。与国内外其他地表水相比，长江南京段水中的药物质量浓度较低。生态风险评估结果表明,长江南京段水中5种药物的风险熵值均低于1，对水生生物不存在高风险。 |
| 英文摘要: |
| In the Yangtze River Nanjing section, water was collected at six sampling points. Five selected pharmaceutical compounds were determined by solid phase extraction and liquid chromatography tandem mass spectrometry (LC MS/MS), and their ecological risks were assessed using risk quotient model. The results showed that the pharmaceutical compounds were detected in all the six sampling sites. The detection rates of tetracycline, erythromycin, roxithromycine and chloramphenicol were 100%, and the highest concentration was 10.29 ng/L for chloramphenicol. Compared to domestic and overseas surface water, the mass concentrations of pharmaceutical compounds are relatively low in this study. The results of ecological risk assessment showed that the risk entropy of the five drugs in the Yangtze River Nanjing section were all less than 1, indicating that the detected drugs are not at high risk for aquatic organisms. |
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