申请人:DH Technologies Development Pte. Ltd.
公开号:US11085925B2
公开(公告)日:2021-08-10
Methods and systems for separating and/or quantifying compounds, using differential mobility spectrometry (DMS) are provided herein. In accordance with various aspects of the applicants' teachings, the methods and systems can provide for the quantification of one or more compounds, for example, using isomeric labels that can be less costly to produce relative to conventional tags that incorporate stable-isotope labels. The present teachings can quantify the relative amount of a compound based on the effect of using an easily charged functional group as well as a functional group positioned at a resonant or non-resonant position through a DMS. In some aspects, methods and systems in accordance with various aspects of the present teachings provide for the detection and/or quantification of the analytes labeled with isomeric tags that can be differentiated via a DMS upstream of a first stage mass analyzer and/or prior to fragmentation of the labeled analyte, for example.
本文提供了使用差示迁移率光谱法(DMS)分离和/或定量化合物的方法和系统。根据申请人教导的各个方面,这些方法和系统可以对一种或多种化合物进行定量,例如,使用异构体标签,相对于使用稳定同位素标签的传统标签,这种标签的生产成本较低。本教导可根据使用易带电官能团以及通过 DMS 定位在共振或非共振位置的官能团的效果来量化化合物的相对量。在某些方面,根据本教导各方面的方法和系统可检测和/或量化用异构体标签标记的分析物,这些异构体标签可通过第一级质量分析仪上游的DMS进行区分和/或在标记的分析物碎裂之前进行区分。