| 北京市地下水中典型抗生素分布特征与潜在风险 |
| 摘要点击 4227 全文点击 1354 投稿时间：2017-04-28 修订日期：2017-06-21 |
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| 中文关键词 抗生素 地下水 污灌区 分布 健康风险 |
| 英文关键词 antibiotic groundwater sewage area distribution health risk |
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| 中文摘要 |
| 应用气相色谱与质谱联用仪分析了北京市地下水内磺胺类（SAs）、氟喹诺酮类（FQs）、四环素类（TCs）、β-内酰胺类和大环内酯类等5大类抗生素.结果表明，北京地下水抗生素以SAs、FQs和TCs等3类为主，检出率分别为78.9%、100%和47.3%，其中甲氧苄氨嘧啶（TMP）、环丙沙星（CIP）和诺氟沙星（NOR）检出率均在70%以上.污灌区地下水样点抗生素浓度显著高于水源地和南水回灌区样点，磺胺二甲嘧啶（SDD）和磺胺嘧啶（SDZ）在污灌区检出峰值达到236 ng·L-1和96.8 ng·L-1.生态风险评价结果表明，研究区地下水抗生素污染风险较小，但在污灌区显示中等或高等风险等级.CIP应作为研究区地下水抗生素监测中的重点监测对象. |
| 英文摘要 |
| Based on the GC-MS technique, we conducted a survey to investigate the concentration, distributions, and emission sources of sulfonamides (SAs), fluoroquinolones (FQs), tetracycline (TCs), β-lactam, and macrolides in groundwater in Beijing. Results indicated that SAs, FQs, and TCs were the main types of antibiotic in groundwater, and the detection ratios of trimethoprim, ciprofloxacin, and norfloxacin were above 70%. Concentration of antibiotics in sites from sewage irrigation areas were significantly higher than those from the drinking source area or the south-to-north water recharge areas. The highest concentration of sulfadimidine (236 ng·L-1) and sulfadiazine (96.8 ng·L-1) in groundwater were both found in the sewage irrigation area. An ecological risk analysis showed a low risk for antibiotic in groundwater at drinking source sites, while groundwater at sewage irrigation sites fell into the high risk group. It is important to strengthen the ciprofloxacin monitoring and ensure underground water safety. |
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