Girard reagent purification coupled with hollow-fiber-based stirring liquid microextraction followed by HPLC with diode array detection for determination of naphthoquinones in Qing Long Yi
作者: Xiaoli Wang ; Feng Niu ; Yuanyuan Zhou ; Chenggang Liu ; Haixue Kuang ; Bingyou Yang ; Yanqiu Jiang ; Yuxin Liu
Naphthoquinones all with carbonyl groups may react with the Girard reagent to form a water-soluble substance called hydrazone. These denatured naphthoquinones can recover lipid solubility transferred to the organic liquid layer.