Cobalt ferrite based magnetic solid phase extraction coupled with HPLC for the determination of four kinds of synthetic colourants in fruit and vegetable juices
LI Xinghong, JIANG Jing, YANG Lina, LI Meiting, HE Yifan, ZHANG Hongyi, SHI Zhihong
Journal of Hebei University (Natural Science Edition) . 2019, (1): 41 -48 .  DOI: 10.3969/j.issn.1000-1565.2019.01.008