Differentiation of olefin isomers by survivor-ion mass spectrometry

✍ Scribed by František Tureček; Ming Gu

• Book ID: 102905972
• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 788 KB
• Volume: 30
• Category: Article
• ISSN: 1076-5174
• DOI: 10.1002/jms.1190300122

✦ Synopsis

Survivor-ion mass spectrometry is a method that relies on the selective monitoring of non-dissociating ions that underwent collisional neutralization and reionization. These charge-permutation processes are found to modulate the relative intensities of precursor ions, both molecular ions and fragments, formed by electron impact t-om C6H,,,C,H,,,C,H,,O, and xylene isomers. The relative intensities of highly-unsaturated ions, such as CSH5+, C,H:', CJH3+, andC,H:', and enol ions are enhanced in the survivor-ion spectra in dependence on the neutralization gas. Isomer differentiation through survivor-ion spectra is achieved for conjugated hexadienes, 1,4hexadiene and cyclohexene, but not for hexenols and xylenes.