文献类型：期刊文献

英文题名：A picture of pharmaceutical pollution in landfill leachates: Occurrence, regional differences and influencing factors

作者：Yu, Xia[1,2];Lyu, Shuguang[2,4];Zhao, Wentao[3];Guo, Changsheng[1];Xu, Jian[1];Sui, Qian[2,4]

机构：[1]Chinese Res Inst Environm Sci, State Environm Protect Key Lab Ecol Effect & Risk, Beijing 100012, Peoples R China;[2]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[3]Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China;[4]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2024

卷号：184

起止页码：20

外文期刊名：WASTE MANAGEMENT

收录：;EI(收录号：20242116138198);WOS:【SCI-EXPANDED(收录号:WOS:001246077900001)】；

基金： This research was supported by the Open Research Fund of State Environmental Protection Key Laboratory of Ecological Effect and Risk Assessment of Chemicals (2022KFYB03) , the Postdoctoral Innovation Talents Support Program (BX20230123) , the China Postdoctoral Science Foundation (2023M741171) , the Science and Technology Commission of Shanghai Municipality's Yangfan Special Project (23YF1408400) , the National Natural Science Foundation of China (21777042, 22076045), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Emerging contaminants; Pharmaceuticals; Landfill leachates; Regional difference; Influencing factors

摘要：Municipal solid waste (MSW) landfill sites have been identified as a significant source of pharmaceuticals in the environment because unused or expired pharmaceuticals are discarded into MSW, which eventually percolate into leachates. However, the contamination of pharmaceuticals in landfill leachate in China is not comprehensively understood. Previous research into factors influencing pharmaceutical concentrations focused on a limited number and type of target pollutants or restricted study area. In the present study, 66 pharmaceuticals were analyzed (including 45 antibiotic and 21 non-antibiotic pharmaceuticals, also categorized as 59 prescription and 7 non-prescription pharmaceuticals) in leachate samples from landfill sites with various characteristics in different regions of China. The results indicated that non-antibiotic pollutants were present at significantly higher concentrations than antibiotic pollutants, with median concentrations of 1.74 mu g/L and 527 ng/L, respectively. Non-antibiotic pollutants also presented a higher environmental risk than antibiotic pollutants, by 2 to 4 orders of magnitude, highlighting that non-antibiotic pharmaceuticals should not be overlooked during the assessment of landfill leachate. Pharmaceutical concentrations in landfill leachate samples exhibited regional differences; the population size served by the landfills was the dominant factor contributing to the observed differences. In addition, landfill characteristics such as the solid waste composition and MSW loading can also affect pharmaceutical concentrations in landfill leachate. Despite the implementation of the classification and disposal policy of MSW in Shanghai, China since July 2019, specifying that unused or expired pharmaceuticals should be discarded as hazardous waste, high levels of pharmaceutical contaminations were detected in leachate from the main components of classified MSW (i.e., residual and food waste). These findings emphasize the importance of pharmaceutical management in solid waste systems.