Insight into pyrrolizidine alkaloids degradation and the chemical structures of their degradation products using ultra high performance liquid chromatography and Q-Exactive Orbitrap mass spectrometry - Yuexing Yi; Yuting Lu; Hongxia Liu; Ziqi Wang; Shiqi Li; Xuchen Huang; Yunfeng Chai; Xiangchun Zhang; Zuguang Li; Hongping Chen (Journal of Hazardous Materials, 2024)