| 典型抗生素在中国西南地区某污水处理厂中的行为和归趋 |
| 摘要点击 4627 全文点击 1909 投稿时间：2013-09-06 修订日期：2013-11-06 |
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| 中文关键词 污水处理厂 抗生素 污泥吸附 质量平衡分析 去除率 |
| 英文关键词 wastewater treatment plant antibiotics sludge sorption mass balance analysis removal efficiency |
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| 中文摘要 |
| 采用固相萃取-高效液相色谱-串联质谱（SPE-HPLC-MS/MS）法调查研究了10种典型抗生素药物在中国西南地区某污水处理厂中的含量水平、去除特点及其行为特征. 结果表明，10种目标抗生素均能在污水中检出，其浓度水平在ng·L-1~μg·L-1之间；在脱水污泥样中同样能检测出目标抗生素的残留，含量范围在（0.92±0.18）~（466.76±77.46）ng·g-1之间，浓度最高的是阿奇霉素（以干重计，466.76 ng·g-1）. 目标抗生素在进水和出水中的总质量负荷分别为1.94 mg·（d·person）-1和807.17 μg·（d·person）-1. 质量平衡分析结果表明，生物转化或降解是其主要去除机制，对于喹诺酮类抗生素和阿奇霉素，污泥吸附也是相关的去除途径之一（污泥吸附占进水负荷的9.35%~26.96%）. |
| 英文摘要 |
| The occurrence and fate of ten antibiotics were investigated in a municipal wastewater treatment plant in Southwest China. Antibiotics were identified and quantified using high performance liquid chromatography/tandem mass spectrometry after solid-phase extraction. The results showed that 10 antibiotics were present in wastewater, in concentrations ranging from ng·L-1 to μg·L-1. All of the target antibiotics were also detected in sludge with concentrations ranging from (0.92±0.18) to (466.76±77.46) ng·g-1, with azithromycin having the highest concentration (466.76 ng·g-1 dry weight). Mass balance analysis showed that biotransformation/biodegradation was the main removal mechanism for the selected antibiotics, and sorption onto sludge was a relevant removal pathway for quinolone antibiotics, and azithromycin, which accounted for 9.35% to 26.96% of the initial loadings. |
