【摘 要】
：
Antibiotics are widely used in humans and animals,but their transformation from surface water to groundwater and the impact of land uses on them remain unclear.In this study,14 antibiotics were systematically surveyed in a complex agricultural area in Cen
【机 构】
：
Key Laboratory for Environment and Disaster Monitoring and Evaluation of Hubei,Innovation Academy fo
论文部分内容阅读
Antibiotics are widely used in humans and animals,but their transformation from surface water to groundwater and the impact of land uses on them remain unclear.In this study,14 antibiotics were systematically surveyed in a complex agricultural area in Central China.Re-sults indicated that the selected antibiotic concentrations in surface waters were higher in winter(average:32.7 ng/L)than in summer(average:17.9 ng/L),while the seasonal variation in groundwaters showed an opposite trend(2.2 ng/L in dry winter vs.8.0 ng/L in summer).Macrolides were the predominant antibiotics in this area,with a detected frequency of over 90％.A significant correlation between surface water and groundwater antibiotics was only observed in winter(R2=0.58).This study further confirmed the impact of land uses on these contaminants,with optimal buffer radii of 2500 m in winter and 500 m in summer.Risk assessment indicated that clarithromycin posed high risks in this area.Overall,this study identified the spatiotemporal variability of antibiotics in a typical agricultural area in Central China and revealed the impact of land uses on antibiotic pollution in aquatic environments.
其他文献
Emission intensity and climate change control the transport flux and fate of persistent or-ganic pollutants(POPs)in multiple environmental compartments.This study applied a mul-timedia model(BETR model)to explore alternations in the spatio-temporal trends
Stringent quarantine measures during the Coronavirus Disease 2019(COVID-19)lockdown period(January 23,2020 to March 15,2020)have resulted in a distinct decrease in anthro-pogenic source emissions in North China Plain compared to the paralleled period of 2
Microcosmic experiments were performed under a simulated marine environment to in-vestigate the natural attenuation of C9 aromatics using nine components(propylbenzene,isopropylbenzene,2-ethyltoluene,3-ethyltoluene,4-ethyltoluene,1,2,3-trimethylbenzene,1,
Ten nitrated polycyclic aromatic hydrocarbons(nPAHs)and 4 oxygenated polycyclic aro-matic hydrocarbons(oPAHs)in fine particulate matter(PM2.5)samples from Mount Tai were analyzed during summer(June to August),2015.During the observation campaign,the mean
Streptomycin(STR)plays an essential role in bacterial infection treatments.Selectivity and sensitivity of photoelectrochemical(PEC)sensors are the two most important parameters,which can be measured using the photosensitivity of its active material.We pre
Modified clay(MC),an effective material used for the emergency elimination of algal blooms,can rapidly reduce the biomass of harmful algal blooms(HABs)via flocculation.After that,MC can still control bloom population through indirect effects such as oxida
In this study,the thermal stability of a ferric oxide catalyst for mercury oxidation was found to be considerably promoted by doping with La2O3.The catalysts doped with La2O3 main-tained a higher surface area when subjected to high-temperature calcination
Filamentous fungi can enter drinking water supply systems in various ways,and exist in suspended or sessile states which threatens the health of individuals by posing a high risk of invasive infections.In this study,the biofilms formation kinetics of the
The Key Laboratory of Drinking Water Science and Technology (DWST),a key branch of the Laboratory of Environmental Aquatic Chemistry,has been staying on the cutting edge in the field of drinking water since its establishment in 2014.The main goal of this
Improving our understanding of air pollutant emissions from the asphalt industry is critical for the development and implementation of pollution control policies.In this study,the spatial distribution of potential maximum emissions of volatile organic com