By Andrew M. Ellis
ISBN-10: 1118682882
ISBN-13: 9781118682883
ISBN-10: 1118684125
ISBN-13: 9781118684122
ISBN-10: 1405176687
ISBN-13: 9781405176682
Proton move response Mass Spectrometry (PTR-MS) is a quickly becoming analytical procedure for detecting and making a choice on very small amounts of chemical substances in air. It has visible common use in atmospheric tracking and nutrition technology and exhibits expanding promise in purposes similar to commercial method tracking, clinical technology and in crime and safeguard scenarios.
Written by way of prime researchers, this can be the 1st e-book dedicated to PTR-MS and it offers a complete account of the fundamental rules, the experimental strategy and numerous purposes, hence making this ebook crucial analyzing for researchers, technicians, postgraduate scholars and execs in industry.
The booklet includes 9 chapters and is split into elements. the 1st half describes the underlying ideas of the PTR-MS strategy, including
• the appropriate ion-molecule chemistry
• thermodynamics and response kinetics
• a dialogue of ion resources, go with the flow tubes and mass spectrometers
• practical features of PTR-MS, together with calibration.
The moment a part of the publication turns its awareness to a few of the numerous functions of PTR-MS, demonstrating the scope and merits, in addition to the restrictions, of the method. The chapters that make up the second one a part of the e-book construct upon the fabric provided within the first half and are primarily self-contained experiences targeting the next topics:
• environmental science
• nutrients science
• medicine
• fatherland safeguard, and
• purposes of PTR-MS in liquid analysis.
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Additional info for Proton transfer reaction mass spectrometry : principles and applications
Sample text
4. A more detailed account of the kinetic analysis procedure can be found elsewhere [11]. Once established, the FA technique was used to determine the kinetics of numerous ion–molecule reactions. It also has the potential to be used as a technique for quantitative analysis of gas Y, providing the rate coefficient for the X + + Y reaction is known. However, while a major step forward in the study of ion–molecule reactions, there are some weaknesses of this technique. On the experimental side, it requires a relatively large piece of apparatus.
12. Adams, N. , Smith, D. (1976) The selected ion flow tube (SIFT): a technique for studying ion-neutral reactions. Int. J. Mass Spectrom. Ion Phys. 21, 349. 13. , Lindinger, W. (1994) Applications of proton transfer reactions to gas analysis. Int. J. Mass Spectrom. Ion Processes 134, 55. 14. , Fehsenfeld, F. , Albritton, D. L. (1979) H + and D + ions in He: observations of a runaway mobility. J. Phys. B: Atom. Molec. Phys. 12, 4189. 15. , Holzinger, R. et al. (1995) Proton transfer reaction mass spectrometry: on-line trace gas analysis at the ppb level.
Mass Spectrom. Rev. 24, 661. 17. Milligan, D. , Francis, G. , Prince, B. , McEwan, M. J. (2007) Demonstration of selected ion flow tube MS detection in the parts per trillion range. Anal. Chem. 79, 2537. 1 Introduction Chemical ionization mass spectrometry (CI-MS) is a mature technique for chemical analysis that was first developed in the mid-1960s [1, 2]. Since the ionization process in PTR-MS is a form of CI, it is useful to first consider some general aspects of CI-MS before considering the thermodynamics and kinetics of proton transfer.
Proton transfer reaction mass spectrometry : principles and applications by Andrew M. Ellis
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