The chemical composition of individual aerosol particle generated by Devilbiss 40# nebulizer was determi-ned by time-of-flight mass spectrometry(TOFMS)with laser desorption ionization(LDI).

• 基质辅助激光解吸附电离飞行时间质谱是近年来发展很快的一种新颖的质谱分析仪，尤其适用于生物大分子的分子星测定。