Determination of vitamin D in infant formula and rice flour by online SPE column and two-dimensional liquid chromatography
YE Jiaming, WANG Jing, YE Leihai, HE Bin, YANG Haiqing, WANG Qingqi, CHEN Qingjun
Food and Fermentation Industries . 2020, (7): 239 -243 .  DOI: 10.13995/j.cnki.11-1802/ts.022221