负化学电离质谱法(negative chemical ionization mass spectrometry,NCI-MS)问世以来仅十年左右,由于它能提供气相负离子的反应动力学及热力学性质以及分子的电子亲和性等方面丰富的信息,特别是在分析化学方面显示出来的十分独特的灵敏度和选择性,已经引起理论化学家和实验化学家日益浓厚的兴趣。从质谱学的历史来看,对负离子的研究远不 Since the advent of negative chemical ionization mass spectrometry (NCI-MS), it has provided a wealth of information on the reaction kinetics and thermodynamic properties of gaseous negative ions as well as the electronic affinity of the molecules Is a very unique sensitivity and selectivity shown in analytical chemistry that has drawn the growing interest of both theoretical and experimental chemists. From the history of mass spectrometry, the study of negative ions is far from