摘要
抗生素因其高效性而被大量使用,排放进入环境后成为新污染物,其健康风险日益引起广泛关注。目前在多种环境介质中均检测到抗生素的存在,而海南省尚缺乏有关饮用水源地抗生素污染的数据。本研究选取海南省5个典型饮用水源地采集水样和底泥沉积物样品,分析了5类抗生素(磺胺类、喹诺酮类、四环素类、大环内酯类和其他类)的污染水平,并评估水体中抗生素的生态和健康风险。结果表明,在水体中共检出9种抗生素,总浓度范围为2.48~112.87 ng∙L^(-1),主要污染物为磺胺甲恶唑、氟罗沙星和强力霉素。沉积物中共检出12种抗生素,总浓度范围为3.46~28.92 ng∙g^(-1),主要污染物为氟罗沙星。生态风险评估结果表明,水体中检出的抗生素风险商(RQ)值均<1,未发现单一抗生素在各水源地存在高风险。人体健康风险评估结果表明,各水源地中检出的抗生素健康风险商(RQ_(H))值均远<0.01,对成人和儿童健康造成的损害可忽略。
Antibiotics are widely used owing to their high efficiency.However,the discharge of antibiotics into the ambient environment resulting in them as a category of emerging contaminants,causing potential human health risks which are attracting increasingly attention in recent years.To date,antibiotics have been detected in a variety of environmental matrices,whereas there is still a lack of data on antibiotic contamination in drinking water sources in Hainan Province.In this study,water and sediment samples were collected from five typical drinking water sources in Hainan Province,the pollution levels of five classes of antibiotics,including sulfonamides,quinolones,tetracyclines,macrolides and others,were analyzed,and the potential health risks were assessed.The results indicated that nine antibiotics were frequently detected in the water,with total concentrations ranging from 2.48 to 112.87 ng·L^(-1).The main pollutants were sulfamethoxazole,fleroxacin and doxycycline.Twelve antibiotics were detected in the sediments,with concentrations ranging from 3.46 to 28.92 ng·g^(-1).The major pollutant was fleroxacin.The ecological risk assessment results of antibiotics in water showed that the risk quotient(RQ)value is less than 1in all water samples,and no antibiotic is found to have high risk in each water source.The results of human health risk assessment showed that the health risk quotient(RQ H)value of antibiotics detected in each water source is far less than 0.01,and the damage to adults and children can be neglected.
作者
姚丽君
莫凌
庄僖
秦瑞欣
蔡凤珊
唐斌
王俊丽
郑晶
Yao Lijun;Mo Ling;Zhuang Xi;Qin Ruixin;Cai Fengshan;Tang Bin;Wang Junli;Zheng Jing(School of Public Health,The Key Laboratory of Environmental Pollution Monitoring and Disease Control,Ministry of Education,Guizhou Medical University,Guiyang 550025,China;State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment,South China Institute of Environmental Sciences,Ministry of Ecology and Environment,Guangzhou 510655,China;Hainan Academy of Environmental Sciences,Haikou 571126,China)
出处
《生态毒理学报》
CAS
CSCD
北大核心
2022年第5期349-361,共13页
Asian Journal of Ecotoxicology
基金
海南省典型水源地药物与个人护理品污染分布特征及风险评估研究项目(QCXM201914)
海南省科协青年科技英才学术创新计划项目。
关键词
抗生素
饮用水源地
水体
沉积物
生态风险
人体健康风险
antibiotics
drinking water sources
water
sediments
ecological risks
human health risks
作者简介
第一作者:姚丽君(1996—),女,硕士研究生,研究方向为环境与健康,E-mail:736871454@qq.com;通讯作者:郑晶,E-mail:zhengjing@scies.org。
