Droplet-based extraction mass spectrometry
2021
Zhang, Xinlian | Na, Na | Ouyang, Jin
Analytical methods based on microdroplet technology have made great progress in life science research. As a new method of sample separation and enrichment, single-drop extraction has been applied in the pretreatment of chromatographic samples. Recently, the combination of microdroplet technology and mass spectrometric detection technology has become a new direction. The microdroplet extraction mass spectrometry surface analysis technology utilizes a trace amount of solvent on a sample surface in the form of a single droplet that extracts the analyte and uses a chip nozzle to analyze the extract via nanoliter electrospray ionization mass spectrometry (MS). Microdroplet extraction single-cell mass spectrometry has facilitated an important research direction in single-cell mass spectrometry. In this review, we focus on the method of droplet extraction at tissue and cellular levels: liquid extraction surface analysis (LESA) was introduced at the tissue level; single-cell droplet microextraction technology was presented at the cell level.
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