Reduced graphene oxide-zinc oxide nanocomposite as dispersive solid-phase extraction sorbent for simultaneous enrichment and purification of multiple mycotoxins in Coptidis rhizoma (Huanglian) and analysis by liquid chromatography tandem mass spectrometry

Zafar Iqbal Tanveer, Qingwen Huang, Li Liu, Keqiu Jiang, Dongxia Nie, Hongye Pan, Yong Chen, Xuesong Liu, Lianjun Luan, Zheng Han, Yongjiang Wu