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Sources, Environmental Fate, and Ecological Risks of Antibiotics in Sediments of Asia’s Longest River: A Whole-Basin Investigation
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2022-09-28 , DOI: 10.1021/acs.est.2c03413 Yulin Chen 1 , Chunxia Jiang 2 , Yile Wang 1 , Ranran Song 1 , Yang Tan 1 , Yuyi Yang 2 , Zulin Zhang 1, 3
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2022-09-28 , DOI: 10.1021/acs.est.2c03413 Yulin Chen 1 , Chunxia Jiang 2 , Yile Wang 1 , Ranran Song 1 , Yang Tan 1 , Yuyi Yang 2 , Zulin Zhang 1, 3
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This study conducted the first extensive and comprehensive investigation of the whole-scale sedimentary antibiotic concentration, possible drivers, environmental fate, and potential ecological risks in the Yangtze River. Totally, 20 antibiotics were detected in the sediments. Results revealed that the order of antibiotic abundance in sediment was fluoroquinolones > tetracyclines > macrolides > sulfonamides > amphenicols. The total antibiotic concentrations were 0.10–134.4 ng/g (mean: 11.88 ng/g). Of these, fluoroquinolones and tetracyclines were the two dominant antibiotic categories. The dominant occurrence of fluoroquinolones and tetracyclines in sediments suggested that the distribution coefficient (Kd) was one of the important factors to determine their fate. Correlation analysis demonstrated that antibiotic contamination was largely influenced by the local scale of animal husbandry, and the positive correlation between antibiotics and heavy metals was likely driven by their common source of contamination and the complexation. Environmental risk assessment showed that tetracycline and chlortetracycline exhibited potential risks from medium to high in the Yangtze River, although most of the compounds posed minimal and low risks. This work provided a valuable large-scale data set across the whole Yangtze River and revealed the contamination profile of antibiotics. Mitigation and management measures to reduce antibiotic inputs are needed for the Yangtze River basin.
中文翻译：
亚洲最长河流沉积物中抗生素的来源、环境归宿和生态风险：全流域调查
本研究首次对长江全尺度沉积物抗生素浓度、可能的驱动因素、环境归宿和潜在生态风险进行了广泛而全面的调查。在沉积物中总共检测到20种抗生素。结果表明，沉积物中抗生素的丰度顺序为氟喹诺酮类 > 四环素类 > 大环内酯类 > 磺胺类 > 苯酚类。抗生素总浓度为 0.10–134.4 ng/g（平均值：11.88 ng/g）。其中，氟喹诺酮类和四环素类是两个主要的抗生素类别。沉积物中氟喹诺酮类和四环素类的主要存在表明分布系数（K d) 是决定他们命运的重要因素之一。相关性分析表明，抗生素污染在很大程度上受当地畜牧业规模的影响，抗生素与重金属之间的正相关可能是由它们共同的污染源和络合驱动的。环境风险评估显示，四环素和金霉素在长江中的潜在风险为中到高，但大多数化合物的风险为低风险和低风险。这项工作为整个长江提供了宝贵的大规模数据集，并揭示了抗生素的污染概况。长江流域需要采取缓解和管理措施来减少抗生素投入。
更新日期：2022-09-28
中文翻译：
亚洲最长河流沉积物中抗生素的来源、环境归宿和生态风险：全流域调查
本研究首次对长江全尺度沉积物抗生素浓度、可能的驱动因素、环境归宿和潜在生态风险进行了广泛而全面的调查。在沉积物中总共检测到20种抗生素。结果表明，沉积物中抗生素的丰度顺序为氟喹诺酮类 > 四环素类 > 大环内酯类 > 磺胺类 > 苯酚类。抗生素总浓度为 0.10–134.4 ng/g（平均值：11.88 ng/g）。其中，氟喹诺酮类和四环素类是两个主要的抗生素类别。沉积物中氟喹诺酮类和四环素类的主要存在表明分布系数（K d) 是决定他们命运的重要因素之一。相关性分析表明，抗生素污染在很大程度上受当地畜牧业规模的影响，抗生素与重金属之间的正相关可能是由它们共同的污染源和络合驱动的。环境风险评估显示，四环素和金霉素在长江中的潜在风险为中到高，但大多数化合物的风险为低风险和低风险。这项工作为整个长江提供了宝贵的大规模数据集，并揭示了抗生素的污染概况。长江流域需要采取缓解和管理措施来减少抗生素投入。
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