采用实时直接分析质谱法原位快速鉴别茶叶

In situ and rapid identification of tea by direct analysis in real time mass spectrometry

采用近年来发展迅速的常温常压离子化技术——实时直接分析质谱法,建立了对茶叶中主要成分如茶氨酸、咖啡碱等的快速测定方法,通过特征的质谱信号离子,实现了对不同茶叶的快速鉴别。实时直接分析质谱法在大气压下进行,无需对茶叶进行任何的样品处理,大大缩短了分析时间,实现了原位、快速、准确且高通量的检测。

By applying an ambient mass spectrometric method-direct analysis in real time mass spectrometry（DART MS）,a method was developed for rapid identification of the principal constituents in different kinds of tea.The identification of different kinds of tea was also achieved by characteristic mass spectrometric signals.Under atmospheric pressure,DART MS method does not require any sample preparation,greatly reduces the analysis time,realizes the in situ,rapid,accurate,and high-throughput analysis.