Comprehensive insight into the occurrence characteristics, influencing factors and risk assessments of antibiotics in the Chaohu Basin

IF 6.1 2区 环境科学与生态学 Q2 ENGINEERING, ENVIRONMENTAL
Shuanggang Hu, Hongzhi Zhang, Yongjie Yang, Kangping Cui, Junjie Ao, Xuneng Tong, Mengchen Shi, Yi Wang, Xing Chen, Chenxuan Li, Yihan Chen
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Abstract

The pollution of antibiotics in aquatic environments has received extensive attention. Yet, research on antibiotic contamination in river-lake systems, a significant form of modern aquatic environments, still needs to be explored. This study focuses on the Chaohu Basin (China) investigating the occurrence characteristics, influencing factors, and risk assessments of antibiotics in the river-lake system. The total antibiotic concentrations in the water phase and sediment phase were 3.14–1887.49 ng/L and 0.92–1553.75 ng/g, respectively. Clindamycin was the predominant antibiotic in the water phase, whereas tetracycline prevailed in the sediment phase. Notable differences in concentration and structural composition of antibiotics between the tributaries (river system) and Chaohu Lake were observed, indicating the involvement of various geochemical processes in the attenuation of antibiotics during transport to the receiving lake. Spatial analysis suggested that the western river is the primary source of antibiotics in Chaohu Lake. Controlling nutrient influx in heavily polluted areas is crucial to addressing the escalating issue of antibiotic pollution in the river-lake system. The widespread occurrence of clindamycin in the waters is likely due to wastewater treatment plant discharges, and high-intensity human activities continue to exacerbate antibiotic contamination. Risk assessment indicated that sulfamethoxazole, tetracycline, lincomycin, and clindamycin ranked in the top four with the highest risks to the most sensitive aquatic organisms. Nonetheless, the antibiotics presented no risk to consumer health. This study provides valuable insights for controlling antibiotic pollution in riverlake systems.

Abstract Image

全面了解巢湖流域抗生素的发生特征、影响因素和风险评估
水生环境中的抗生素污染已受到广泛关注。然而,作为现代水生环境的一种重要形式,河湖系统的抗生素污染研究仍有待探索。本研究以中国巢湖流域为研究对象,探讨河湖系统中抗生素的发生特征、影响因素和风险评估。水相和沉积物中的抗生素总浓度分别为 3.14-1887.49 纳克/升和 0.92-1553.75 纳克/克。水相中的抗生素主要是克林霉素,而沉积相中则以四环素为主。支流(河系)与巢湖之间抗生素的浓度和结构组成存在显著差异,表明抗生素在向受纳湖泊迁移的过程中参与了各种地球化学过程的衰减。空间分析表明,西部河流是巢湖抗生素的主要来源。控制重污染区的营养物质流入对于解决河湖系统中日益严重的抗生素污染问题至关重要。克林霉素在水域中的广泛存在很可能是由于污水处理厂的排放造成的,而高强度的人类活动继续加剧了抗生素污染。风险评估表明,磺胺甲噁唑、四环素、林可霉素和克林霉素是对最敏感的水生生物风险最高的前四种抗生素。不过,这些抗生素对消费者的健康没有风险。这项研究为控制河湖系统中的抗生素污染提供了宝贵的见解。
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来源期刊
Frontiers of Environmental Science & Engineering
Frontiers of Environmental Science & Engineering ENGINEERING, ENVIRONMENTAL-ENVIRONMENTAL SCIENCES
CiteScore
10.90
自引率
12.50%
发文量
988
审稿时长
6.1 months
期刊介绍: Frontiers of Environmental Science & Engineering (FESE) is an international journal for researchers interested in a wide range of environmental disciplines. The journal''s aim is to advance and disseminate knowledge in all main branches of environmental science & engineering. The journal emphasizes papers in developing fields, as well as papers showing the interaction between environmental disciplines and other disciplines. FESE is a bi-monthly journal. Its peer-reviewed contents consist of a broad blend of reviews, research papers, policy analyses, short communications, and opinions. Nonscheduled “special issue” and "hot topic", including a review article followed by a couple of related research articles, are organized to publish novel contributions and breaking results on all aspects of environmental field.
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