The analysis adopted a fixed phase which was Apollo C18 column, a mobile phase which was V(methanol) : V(water) : V(acetic acid ) = 75:25:5 at a flow rate of 1.0 mL/min, and UV detection at 254 nm.

• 采用Apollo C18分析柱；流动相是V(甲醇):V(水):V(冰醋酸)=75:25:5；流速1.；0 mL/min；紫外检测波长254 nm；柱温为室温。