A liquid chromatography method for identifying an analyte of interest utilizing as retention index standards a homologous series of neutrally charged compounds having at least one functional group bearing a positive charge and at least one functional group bearing a negative charge. The method is especially useful for liquid chromatography-mass spectrometry (LC-MS) methods, more especially for LC-MS methods employing electrospray (ESI) or atmospheric pressure chemical ionization (APCI) ionization systems.
一种
液相色谱法,利用至少一个带正电荷的官能团和至少一个带负电荷的官能团的中性带电化合物的同源系列作为保留指数标准,来鉴定感兴趣的分析物。该方法特别适用于
液相色谱-质谱(LC-MS)方法,尤其适用于采用电喷雾(ESI)或常压
化学电离(APCI)电离系统的
液相色谱-质谱方法。