Journal Article

FZJ-2014-04624

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Are Clusters Important in Understanding the Mechanisms in Atmospheric Pressure Ionization? Part 1: Reagent Ion Generation and Chemical Control of Ion Populations

Klee, S. (Corresponding Author) ; Derpmann, V. ; Wißdorf, W. ; Klopotowski, S. ; Kersten, H. ; Brockmann, K. J. ; Benter, T. ; Albrecht, S.FZJ* ; Bruins, A. P. ; Dousty, F. ; Kauppila, T. J. ; Kostiainen, R. ; O’Brien, R. ; Robb, D. B. ; Syage, J. A.

2014
Springer New York [u.a.]

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Please use a persistent id in citations: doi:10.1007/s13361-014-0891-2

Abstract: It is well documented since the early days of the development of atmospheric pressure ionization methods, which operate in the gas phase, that cluster ions are ubiquitous. This holds true for atmospheric pressure chemical ionization, as well as for more recent techniques, such as atmospheric pressure photoionization, direct analysis in real time, and many more. In fact, it is well established that cluster ions are the primary carriers of the net charge generated. Nevertheless, cluster ion chemistry has only been sporadically included in the numerous proposed ionization mechanisms leading to charged target analytes, which are often protonated molecules. This paper series, consisting of two parts, attempts to highlight the role of cluster ion chemistry with regard to the generation of analyte ions. In addition, the impact of the changing reaction matrix and the non-thermal collisions of ions en route from the atmospheric pressure ion source to the high vacuum analyzer region are discussed. This work addresses such issues as extent of protonation versus deuteration, the extent of analyte fragmentation, as well as highly variable ionization efficiencies, among others. In Part 1, the nature of the reagent ion generation is examined, as well as the extent of thermodynamic versus kinetic control of the resulting ion population entering the analyzer region.

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Contributing Institute(s):

1. Stratosphäre (IEK-7)
2. Troposphäre (IEK-8)

Research Program(s):

1. 234 - Composition and Dynamics of the Upper Troposphere and Stratosphere (POF2-234) (POF2-234)

Appears in the scientific report 2014

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Database coverage:
; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection ; Zoological Record

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