The MS behaviors and dissociation laws of four alkaloids in Cinchona were studied by direct infusion into electrospray ion trap mass spectrometry (ESI-ITMS).

• 利用电喷雾离子阱质谱(ES-ITMS)技术进行了金鸡纳中4种喹啉类生物碱(奎宁、奎尼定、辛可宁和辛可尼定)的电喷雾质谱研究。