Therefore, 53 samples collected from 27 large-scale animal farms in 11 cities and counties of
Jiangsu Province in 2009, were monitored for 10 selected veterinary antibiotics using solid phase extraction
and high performance liquid chromatography/electrospray ionization-tandem mass spectrometry
(HPLC/ESI-MS/MS) techniques.
Ten veterinary antibiotics were found in animal wastewaters, eight antibiotics
were detected in pond waters, and animal farm-effluents and river water samples were contaminated
by nine antibiotics