SURFACE ANALYTIC METHOD

摘要

PROBLEM TO BE SOLVED: To provide a surface analytic method by a matrix aided laser desoprtion ionization time-of-flight mass spectrometer(MALDI-TOF-MS) capable of simplifying the pretreatment process of a sample and precisely providing the molecular weight and chemical structure information of a bleed substance or contaminant adhered to various surfaces. SOLUTION: A matrix solution of a volatile solvent is directly applied to the surface of a sample. After the solvent is evaporated, the matrix solution applied surface is ionized by irradiation with ultraviolet ray laser to provide a mass spectrum concerning a chemical substance on the surface of the sample.