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• W3000682071 endingPage "122110" @default.
• W3000682071 startingPage "122110" @default.
• W3000682071 abstract "• Occurrence of 14 antibiotics and four ARGs were analyzed in the urban rivers of Chongqing city. • Thirteen antibiotics and four ARGs were detected and exhibited spatiotemporal variation. • Environmental risk assessment indicated four antibiotics posed high risk to sensitive species. • Many environmental factors except the heavy metal could affect their distribution. • Human feces were the potential source of some antibiotics and ARGs. In this study, the occurrence of 14 antibiotics, four corresponding antibiotic resistance genes (ARGs) and two microbial source tracker (MST) indicators were analyzed in two rivers of Chongqing city, southwest China. The results showed that 13 antibiotics were detected in all 12 sites and their detection frequencies were much higher in September, but concentrations were lower than that in March. Of them, erythromycin (ETM) and ofloxacin (OFL) were the predominant antibiotics in both seasons. The remarkably higher concentration of antibiotics in sediments of these rivers than those in other rivers were found. Environmental risk assessment found that four antibiotics posed high risk toward some sensitive algae. For ARGs, their relative abundances were higher in waters than those in sediments, higher in March than in September. Correlation analysis showed that antibiotics were not the exclusive selective pressure of ARGs; many environmental factors like dry matter contents on a mass basis, organic matter, total organic carbon, dissolved organic carbon, temperature, oxidation reduction potential and nitrite could affect the occurrence of ARGs. MST indicators analysis demonstrated that this river basin was largely polluted by human and pig feces, and human feces might be one main source of the four ARGs and five antibiotics." @default.
• W3000682071 created "2020-01-23" @default.
• W3000682071 creator A5043061451 @default.
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• W3000682071 creator A5074651297 @default.
• W3000682071 date "2020-05-01" @default.
• W3000682071 modified "2023-10-08" @default.
• W3000682071 title "Occurrence, distribution, and source track of antibiotics and antibiotic resistance genes in the main rivers of Chongqing city, southwest China" @default.
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• W3000682071 doi "https://doi.org/10.1016/j.jhazmat.2020.122110" @default.
• W3000682071 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31978820" @default.
• W3000682071 hasPublicationYear "2020" @default.
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