School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Nanjing Center, China Geological Survey, Nanjing 210016, China.
Int J Environ Res Public Health. 2021 Jul 30;18(15):8112. doi: 10.3390/ijerph18158112.
The widespread usage of antibiotics in human and animal medication has brought global concerns over environmental contamination of antibiotic residues. In this study, 16 kinds of antibiotics in different environmental media of water, sediments, and soils in Anqing city, Anhui province were determined by ultra-performance liquid chromatography tandem mass spectrometry. A total of fourteen kinds of antibiotics were detected in surface water, with a total concentration up to 479 ng·L, while six kinds of antibiotics were detected in sediment and soil with concentrations ranging from 15.1 to 108 μg·kg. Ciprofloxacin (12.8-99.5 ng·L) and tetracycline (17.2-225 μg·kg) antibiotics exhibited the highest concentration in water and soil, respectively. In spatial distribution, the total concentration of antibiotics in surface water from the highest to the lowest followed the order of urban area, mainstream of Wan River, suburbs, tributaries of Wan River, indicating that the level of antibiotic concentration in surface water is positively associated with the frequency of human activities. In addition, the antibiotic mass fraction in agriculture land and fishpond were found higher than that in other sampling sites. Moreover, the environmental risk assessment results showed that ciprofloxacin, erythromycin, ofloxacin, enrofloxacin and tetracycline might pose medium to high risks to algae and bacteria in aquatic ecosystem.
抗生素在人类和动物医疗中的广泛应用引起了人们对环境中抗生素残留污染的全球关注。本研究采用超高效液相色谱-串联质谱法测定了安徽省安庆市水、沉积物和土壤等不同环境介质中的 16 种抗生素。共检测到地表水中的 14 种抗生素，总浓度高达 479ng·L，而沉积物和土壤中则检测到 6 种抗生素，浓度范围为 15.1-108μg·kg。环丙沙星（12.8-99.5ng·L）和四环素（17.2-225μg·kg）在水中和土壤中的浓度最高。在空间分布上，地表水中抗生素的总浓度从高到低依次为城区、皖河干流、郊区、皖河支流，表明地表水中抗生素浓度与人类活动的频率呈正相关。此外，在农田和鱼塘中发现的抗生素质量分数高于其他采样点。此外，环境风险评估结果表明，环丙沙星、红霉素、氧氟沙星、恩诺沙星和四环素可能对水生态系统中的藻类和细菌构成中到高风险。
