请各位大侠再帮小弟查两篇文章: 1 Carbohydrate and steroid analysis by desorption electrospray ionization mass spectrometry.Chem. Commun., 2008, 2674 - 2676, RSC数据库上面的。 2 Development of desorption electrospray ionization (DESI) mass spectrometry and its application to direct biological tissue analysis and molecular imaging by Wiseman, Justin Michael, Ph.D., Purdue University, 2006, 244 pages; AAT 3260004。 谢谢各位了!