✦ LIBER ✦

Fragment ion formation from n-alkanes and cycloalkanes by plasma desorption

✍ Scribed by R. L. Betts; M. A. Park; E. Lynn Shirey; E. A. Schweikert

Publisher: John Wiley and Sons
Year: 1994
Tongue: English
Weight: 515 KB
Volume: 29
Category: Article
ISSN: 1076-5174
DOI: 10.1002/oms.1210291117

No coin nor oath required. For personal study only.

✦ Synopsis

The plasma desorption of hydrogen loss fragment ions from frozen films of several classes of aliphatic volatile hydrocarbons was investigated with *'*Cf plasma desorption mass spectrometry. A time-of-flight instrument suitable for the reproducible sampling and analysis of volatile hydrocarbons in the solid state was designed for this study. Representative compounds from the n-alkanes and cycloalkanes were analyzed. For all the compounds studied, radical molecular ions, M +', and hydrogen loss fragment ions, [ Mm H 1 + with m varying from 1 to 10, were produced. The length of the alkane chain, the size of the alkane rings and the stability of the resulting H-loss ions affected the number and abundance of these ions. Smaller molecules underwent proportionally more hydrogen loss than larger molecules of the same class.

📜 SIMILAR VOLUMES

Ester formation from n-alkanes by fungi

Ester formation from n-alkanes by fungi isolated from aircraft fuel

✍ Prof. Dr. H. Iizuka; H. T. Lin; M. Iida 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 976 KB

Since 1956, we have isolated many strains of hydrocarbon-assimilating microorganisms from oil brine, natural gas, oil fields, natural gas fields, and from aircraft fuel and studied the met,abolism of hydrocarbons by Candida rugosa (IIZURA et al. 1964a, b, 1966, 1968, IIDA and IIZUKA 1969). On the ot

Plasma desorption mass spectrometry in s

Plasma desorption mass spectrometry in studies of formation and sputtering of fullerenes by MeV atomic ions

✍ I. Bitensky; G. Brinkmalm; P. Demirev; J. Eriksson; P. H»kansson; R. Papaléo; B. 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 847 KB

A plasma desorption mass spectrometry st

A plasma desorption mass spectrometry study of CHn+ and C2Hn+ ion formation from frozen organic surfaces

✍ R.L. Betts; E.F. da Silveira; E.A. Schweikert 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 950 KB

Cross-sections for formation of parent a

Cross-sections for formation of parent and fragment ions by electron impact from C2N2

✍ O.I. Smith 📂 Article 📅 1983 🏛 Elsevier Science 🌐 English ⚖ 246 KB

Characterization of synthetic N-acetylcy

Characterization of synthetic N-acetylcysteine conjugates by positive- and negative-ion 252Cf plasma desorption mass spectrometry

✍ Ernst Pittenauer; Anton Pachinger; Günter Allmaier; Erich R. Schmid 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 495 KB

Dedicated to Professor Dr G. SpiteUer on the occasion of his 60th birthday N-Acetylcysteine and nine N-acetylcysteine conjugates of synthetic origin were characterized by positive-and negative-ion plasma desorption mass spectrometry. For sample preparation the electrospray technique and the nitrocel

Methylcyclopropane ion formation by elim

Methylcyclopropane ion formation by elimination of water from n-butanol and 2-methylpropanol ions

✍ Mohammed S. Ahmed; Charles E. Hudson; C. S. Giam; David J. McAdoo 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 276 KB

C,H:' ions generated from ionized n-butanol (a) and from ionized Zmethylpropanol (b) were characterized by reaction of the daughter ions with ammonia in a Fourier transform mass spectrometer. Hydrogen transfers occur in a in the ratio five-membered ring:six-membered ring = 1:3.2. However, both hydro