质谱仪是利用稳定磁场使带电粒子按照质荷比大小的顺序分离开来,从而进行气态、液态和固态物质的同位素丰度测定和化学成份分析的近代分析仪器。所谓“质谱”,是按分子量大小的顺序排列起来的谱图。质谱法是根据分子离子峰给出物质的分子量。由分子离子峰和含重同位素的分子离子峰及碎片峰可以得出物质的元素组成及化学式。因此质谱法是有效 The mass spectrometer is a modern analytical instrument that uses stable magnetic fields to separate charged particles in order of mass-to-charge ratio in order to determine isotopic abundance and chemical composition of gaseous, liquid and solid matter. The so-called “mass spectrometry”, according to the size of the order of molecular weight spectrum. Mass spectrometry is based on the molecular ion peak gives the molecular weight of the material. From the molecular ion peak and heavy isotope-containing molecular ion peaks and debris peaks can be obtained from the elemental composition and chemical formula. So mass spectrometry is effective