Method for preparing sample for MALDI mass spectrometry

摘要

The present invention relates to a method for preparing a sample for MALDI mass spectrometry, which comprises the steps of:
(a) mixing a liquid sample with a matrix and electrospraying the resulting mixture to form charged sample particles;
(b) focusing the charged particles locally with an electromagnetic field using an ion-optical instrument; and
(c) collecting the focused charged particles an a solid surface under atmospheric pressure.