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| Pollution Characteristics of the Sulfonamides, Quinolones and Macrolides in the Samples Collected from Livestock and Poultry Feedlots |
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| KeyWord:livestock and poultry feedlots；antibiotics; sulfonamides; quinolones; macrolides |
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| Abstract: |
| Five kinds of samples, including animal feces, manures, arable soils, ditch sediments and surface soils of constructed wetlands, were collected from three livestock and poultry feedlots in Fujian Province. Eight antibiotics in these samples were investigated using liquid chromatography-electrospray ionization tandem mass spectrometry（HPLC-MS/MS）. The concentrations of all antibiotics in manure and animal feces were totally higher than those in other three kinds of samples. The concentration of quinolones（∑QNs） and sulfonamides（∑SAs） in manure were higher than those in animal feces, whereas the results for macrolides（∑MLs） were opposite. The concentrations of quinolones were observed higher than those of sulfonamides and macrolides in all the samples, with a range of |
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