Chinese Journal of Chromatography
Simultaneous determination of four azo dyes in paprika powder by high performance liquid chromatography using a porous aromatic framework as the solid-phase extraction sorbent
WEN Wei, ZHANG Wenfen, ZHANG Yanhao, ZHAO Wuduo, ZHANG Shusheng
Chinese Journal of Chromatography . 2019, (5): 491 -498 .  DOI: 10.3724/SP.J.1123.2018.11029