Simultaneous determination of sulfonamides and metabolites in manure samples by one-step ultrasound/microwave-assisted solid-liquid-solid dispersive extraction and liquid chromatography-mass spectrometry. - Wu, Hui-zhen; Qian, Ming-rong; Wang, Jian-mei; Zhang, Hu; Ma, Jun-wei; Li, Zu-guang; Lee, Maw-rong (Analytical & Bioanalytical Chemistry, 2015)