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题名: Emission of M2X+ cluster ions in thermal ionization mass spectrometry inthe presence of graphite
作者: Xiao, YK ;  Wei, HZ ;  Liu, WG ;  Wang, QZ ;  Zhou, YM ;  Wang, YH ;  Lu, H
刊名: FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY
出版日期: 2001
卷号: 371, 期号:8, 页码:1098-1103
英文摘要: The emission of M2X+ cluster ions in thermal ionization mass spectrometry when graphite is loaded on the heating filaments was studied. The emission model of non-reductive thermal ionization of graphite was preliminarily discussed and factors influencing the thermal emission of M2X+ ions were investigated. The results show that the intensities of M2X+ cluster ions are related to ionic radius and crystal lattice energy, and possibly also to the solvation energies of ions. The intensities of M2Cl+ (M stands for K, Rb, and Cs) cluster ions, the M2Cl+/M+ ratios, and the Cl-37/Cl-35 ratios determined from M2Cl+ ion measurement usually increase with measurement time. The variation of the Cl-37/Cl-35 ratios determined from Cs2Cl+ ion measurement is lower than those based on K2Cl+ and Rb2Cl+ ion measurement, indicating the lowest isotopic fractionation. The emission of M2X+ cluster ions in thermal ionization mass spectrometry when graphite is loaded on the heating filaments was studied. The emission model of non-reductive thermal ionization of graphite was preliminarily discussed and factors influencing the thermal emission of M2X+ ions were investigated. The results show that the intensities of M2X+ cluster ions are related to ionic radius and crystal lattice energy, and possibly also to the solvation energies of ions. The intensities of M2Cl+ (M stands for K, Rb, and Cs) cluster ions, the M2Cl+/M+ ratios, and the Cl-37/Cl-35 ratios determined from M2Cl+ ion measurement usually increase with measurement time. The variation of the Cl-37/Cl-35 ratios determined from Cs2Cl+ ion measurement is lower than those based on K2Cl+ and Rb2Cl+ ion measurement, indicating the lowest isotopic fractionation.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/2327
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

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Recommended Citation:
Xiao, YK,Wei, HZ,Liu, WG,et al. Emission of M2X+ cluster ions in thermal ionization mass spectrometry inthe presence of graphite[J]. FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY,2001,371(8):1098-1103.
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