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- W3201415189 endingPage "150439" @default.
- W3201415189 startingPage "150439" @default.
- W3201415189 abstract "The widespread use of antibiotics has raised global concerns, but scarce information on antibiotics in the subtropical marine environment is available. In the present study, seawater and sediment samples were collected to investigate the occurrence, spatial distribution, source, and ecological risks of 22 antibiotics in the Beibu Gulf. The total concentrations of target antibiotics (∑antibiotics) were in the range of 1.74 ng/L to 23.83 ng/L for seawater and 1.33 ng/g to 8.55 ng/g dry weight (dw) for sediment. Spatially, a decreasing trend of antibiotic levels from coast to offshore area was observed, with relatively high levels at the sites close to the Qinzhou Bay and Qiongzhou Strait. Sulfamethoxazole (SMX), trimethoprim (TMP), and norfloxacin (NOX) were predominant in seawater, while NOX, enoxacin (ENX), and enrofloxacin (ENR) were the most abundant antibiotics in sediment. In general, the sediment-water partitioning coefficients (Kd) were positively correlated with log molecular weight (MW). Salinity, particle size, and pH of water were predicted to be vital factors influencing the partition of sulfadiazine (SDZ), CIX, and ENR (p < 0.05). Livestock and aquaculture were identified as dominant sources of antibiotics in the Beibu Gulf based on PCA-MLR and Unmix model. Risk assessment revealed that SMX, CIX could pose medium risks to algae in the Beibu Gulf. Overall, our results provided paramount insights into understanding the fate and transport behaviors of antibiotics in the subtropical marine environment." @default.
- W3201415189 created "2021-09-27" @default.
- W3201415189 creator A5025772761 @default.
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- W3201415189 creator A5079220261 @default.
- W3201415189 creator A5087006239 @default.
- W3201415189 date "2022-02-01" @default.
- W3201415189 modified "2023-10-05" @default.
- W3201415189 title "Occurrence, source apportionment and risk assessment of antibiotics in water and sediment from the subtropical Beibu Gulf, South China" @default.
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- W3201415189 doi "https://doi.org/10.1016/j.scitotenv.2021.150439" @default.
- W3201415189 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34597968" @default.
- W3201415189 hasPublicationYear "2022" @default.
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