Li Y.-W.,Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institute |
Li Y.-W.,Jinan University |
Wu X.-L.,Soil Toxic Pollutants Control and Bioremediation of Guangdong Higher Education Institute |
Wu X.-L.,Jinan University |
And 6 more authors.
Journal of Agricultural and Food Chemistry | Year: 2011
Thirteen antibiotics in soil from vegetable farmlands of the Pearl River Delta, southern China, were investigated. At least three antibiotics were detected in each sample. Six antibiotics including four quinolones, tetracycline, and sulfamethoxazole were detected in >94% of the samples. The total contents of three tetracyclines, eight sulfonamides, and four quinolones were not detected-242.6, 33.3-321.4, and 27.8-1537.4 μg/kg, respectively. The highest antibiotic concentrations were observed mainly in vegetable farmlands affiliated with livestock farms. Chlortetracycline, sulfameter, and quinolones in some samples exceed the ecotoxic effect trigger value (100 μg/kg) set by the Steering Committee of Veterinary International Committee on Harmonization. The composition and concentration of antibiotics in soil were correlated with vegetable species. This study has revealed an alarming condition of antibiotics in vegetable farmland soil. Further investigation including environmental fate, plant uptake, and human exposure to antibiotics by plant-derived food should be conducted. © 2011 American Chemical Society.