title: Laser desorption dual spray post-ionization mass spectrometry for direct analysis of samples via two informative channels.
abstract: A laser desorption dual spray post-ionization mass spectrometry method is described, and its usefulness is demonstrated with the examples of selective detection of food components, manipulation of protein charge state distribution and investigation on the formation of magic number clusters. The method is carried out by adopting two spray emitters for post-ionization of analytes desorbed by a pulsed infrared laser. Various components in a complex sample or distinct behavior of an analyte in two different spray reagents can be rapidly probed by the method quasi-simultaneously, highlighting the potential applications of this method for protein characterization, reaction study and food analysis.
authors: Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China.
authors: Jia
authors: J
authors: Liu
authors: Chengsen
authors: C
authors: Zhang
authors: Jiamu
authors: J
authors: Sun
authors: Xinxin
authors: X
authors: Ren
authors: Hai
authors: H
authors: Luo