Determination of the isomeric composition of an ionic mixture using collision cross-sections
β Scribed by Bo Un Yoon; Myung Soo Kim
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 709 KB
- Volume
- 25
- Category
- Article
- ISSN
- 1076-5174
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β¦ Synopsis
A theory has been developed for the determination of the isomeric composition of an ionic mixture. The probability theory describing the collisionally activated decomposition (CAD) which was developed previously provided a general foundation for the present theory. Quantification was based on the cross-sections for the collisional production of daughter ions as observed in the mass-analysed ion kinetic energy spectrometry (MIKES). Experimental details for the implementation of the theory have also been developed. The method has been applied to the case of C2H,0+' generated from butane-l,Miol, which is known to be a mixture of more than one isomeric structure. The results seem to be far superior to those based on previous methods, as evidenced by the excellent internal consistency.
π SIMILAR VOLUMES
## Abstract A method was devised to determine the isomeric composition of an ionic mixture using collisionally activated decomposition mass spectrometry. Compared with the more rigorous approach based on collision crossβsections reported previously, the main advantage of the proposed method is its
1%~ use a giant-puke ruby laser and a cw dye laser in a unique inverse Raman spectrometer, and determined the absolu:e Rarnan cross section for the nitrobenzene line at 1345 cm-' to be (1.38 2 0.27) x 10" cm2 ST-'\_ 1\_ intraduc tion The determination of absolute l&man cross sections has long been a