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Emission of M2X+ cluster ions in thermal ionization mass spectrometry inthe presence of graphite
Xiao, YK; Wei, HZ; Liu, WG; Wang, QZ; Zhou, YM; Wang, YH; Lu, H
2001
发表期刊FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY
ISSN0937-0633
卷号371期号:8页码:1098-1103
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
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/2327
专题青海盐湖研究所知识仓储
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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.
APA Xiao, YK.,Wei, HZ.,Liu, WG.,Wang, QZ.,Zhou, YM.,...&Lu, H.(2001).Emission of M2X+ cluster ions in thermal ionization mass spectrometry inthe presence of graphite.FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY,371(8),1098-1103.
MLA Xiao, YK,et al."Emission of M2X+ cluster ions in thermal ionization mass spectrometry inthe presence of graphite".FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY 371.8(2001):1098-1103.
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