MS: electrospray ( ESI) with multi -ion monitoring(selected ion monitoring, SIM ) :positive ions,m/z 1203 for cyclosporine A and m/z 1217 for cyclosporine D(CsD,internal standard).

• 质谱:电喷雾电离源(ESI),选择性监测质荷比(m/z)为1203(环孢素A),1217(内标,环孢素D)带正电荷的分子离子峰。