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Relevant bibliographies by topics / Chemical ionisation

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Academic literature on the topic 'Chemical ionisation'

Author: Grafiati

Published: 11 December 2022

Last updated: 31 July 2025

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Journal articles on the topic "Chemical ionisation"

1

He, Xu-Cheng, Jiali Shen, Siddharth Iyer, et al. "Characterisation of gaseous iodine species detection using the multi-scheme chemical ionisation inlet 2 with bromide and nitrate chemical ionisation methods." Atmospheric Measurement Techniques 16, no. 19 (2023): 4461–87. http://dx.doi.org/10.5194/amt-16-4461-2023.

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Abstract. The multi-scheme chemical ionisation inlet 1 (MION1) enables rapid switching between the measurement of atmospheric ions without chemical ionisation and neutral molecules using various atmospheric pressure chemical ionisation methods. In this study, we introduce the upgraded version, the multi-scheme chemical ionisation inlet 2 (MION2). The new design incorporates enhanced ion optics, resulting in increased reagent ion concentration, ensuring a robust operation, and enabling the use of multiple chemical ionisation methods with the same ionisation time. In order to simplify the regula

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2

Stehmann, A., R. J. W. Meesters, and Horst Fr Schröder. "Mass spectrometric analytical methods for the determination of endocrine disrupting chemicals (EDCs)." Water Science and Technology 50, no. 5 (2004): 165–71. http://dx.doi.org/10.2166/wst.2004.0324.

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This paper describes a method for the determination of endocrine disrupting chemicals (EDCs) in waste water. The method involves a SPE-C18 extraction followed by a SPE-silica gel column clean up and elution of the analytes with a mixture of acetone/pentane (2+1). Thereafter derivatisation of the analytes with heptafluorobutyric acid anhydride (HFBA) and analysis by gas chromatography/mass spectrometry (GC/MS) with positive electron impact ionisation (EI) or negative chemical ionisation (NCI) using methane as reactant gas was performed. The two different ionisation techniques were compared and

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3

Gates, Paul J. "Atmospheric pressure chemical ionisation mass spectrometry for the routine analysis of low molecular weight analytes." European Journal of Mass Spectrometry 27, no. 1 (2021): 13–28. http://dx.doi.org/10.1177/14690667211005055.

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The routine analysis of low molecular weight analytes by mass spectrometry is often complicated by the lability of the analyte’s functional groups and/or the lack of moieties that can be easily charged. If a molecule is too labile this precludes analysis by techniques such as electron ionisation or chemical ionisation as the analyte will undergo thermal decomposition prior to ionisation as well as spontaneous fragmentation during the ionisation process. If the analyte has a low propensity to form ions in electrospray ionisation (i.e., lacks acidic or basic sites) then often no analyte related

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McCullough, Bryan J., and Christopher Hopley. "Extractive atmospheric pressure chemical ionisation." Rapid Communications in Mass Spectrometry 25, no. 17 (2011): 2570–72. http://dx.doi.org/10.1002/rcm.5141.

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Zagorodskikh, S., M. Vapa, O. Vahtras, et al. "An experimental and theoretical study of core–valence double ionisation of acetaldehyde (ethanal)." Physical Chemistry Chemical Physics 18, no. 4 (2016): 2535–47. http://dx.doi.org/10.1039/c5cp05758b.

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Core–valence double ionisation spectra of acetaldehyde (ethanal) are presented at photon energies above the carbon and oxygen 1s ionisation edges, measured by a versatile multi-electron coincidence spectroscopy technique and analyzed by means of quantum chemical calculations of transition energies.

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Pérez, E., L. Cuesta, D. Axon, and A. Robinson. "Ionisation Structure of NGC 6543." Symposium - International Astronomical Union 180 (1997): 270. http://dx.doi.org/10.1017/s0074180900130888.

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We have obtained high spectral resolution, high signal-to-noise ratio longslit spectra of a sample of Planetary Nebulae with the purpose of studying their physical conditions, chemical composition and ionisation structure. In particular, we are interested in disentangling the effects of radiation and shock ionisation.

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Finkenzeller, Henning, Jyri Mikkilä, Cecilia Righi, et al. "Multiphysical description of atmospheric pressure interface chemical ionisation in MION2 and Eisele type inlets." Atmospheric Measurement Techniques 17, no. 20 (2024): 5989–6001. http://dx.doi.org/10.5194/amt-17-5989-2024.

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Abstract. Chemical ionisation inlets are fundamental instrument components in chemical ionisation mass spectrometry (CIMS). However, the sample gas and reagent ion trajectories are often understood only in a general and qualitative manner. Here, we evaluate two atmospheric pressure interface chemical ionisation inlets (MION2 and Eisele type inlet) with 3D computational fluid dynamics physicochemical models regarding the reagent ion and sample gas trajectories and estimate their efficiencies of reagent ion production, reagent ion delivery from the ion source volume into the ion–molecule mixing

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Ballantine, James A., Jonathan D. Barton, James F. Carter, and Brynley Fussell. "Production of [M+H]+ ions under electron ionisation conditions by self-induced chemical ionisation." Organic Mass Spectrometry 22, no. 8 (1987): 564–66. http://dx.doi.org/10.1002/oms.1210220819.

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K., P. MADHUSUDANAN, S. GARG H., and S. BHAKUNI D. "Low Pressure Negative Chemical Ionisation Mass Spectra of Friedelane Derivatives." Journal of Indian Chemical Society Vol. 62, Aug 1985 (1985): 613–15. https://doi.org/10.5281/zenodo.6321634.

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Medicinal Chemistry Division, Central Drug Research Institute, Lucknow-226 001 <em>Manuscript received 22 May 2985, accepted 30 August 1985</em> Low pressure negative chemical ionisation mass spectra of several C<sub>3</sub> and C<sub>7</sub> oxygenated friedelanes have been studied using sodium bicarbonate to generate the reagent ions. Ionisation and fragmentation are directed by the functional groups present. Intense (M — H)<sup>-</sup> ion and a few structurally diagnostic fragment ion peaks are observed. The presence of carbonyl function at C<sub>3</sub> or C<sub>7</sub> leads t

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Beck, Lisa J., Siegfried Schobesberger, Mikko Sipilä, Veli-Matti Kerminen, and Markku Kulmala. "Estimation of sulfuric acid concentration using ambient ion composition and concentration data obtained with atmospheric pressure interface time-of-flight ion mass spectrometer." Atmospheric Measurement Techniques 15, no. 6 (2022): 1957–65. http://dx.doi.org/10.5194/amt-15-1957-2022.

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Abstract. Sulfuric acid (H2SO4, SA) is the key compound in atmospheric new particle formation. Therefore, it is crucial to observe its concentration with sensitive instrumentation, such as chemical ionisation (CI) inlets coupled to atmospheric pressure interface time-of-flight (APi-TOF) mass spectrometers. However, there are environmental conditions for which and physical reasons why chemical ionisation cannot be used, for example in certain remote places or during flight measurements with limitations regarding chemicals. Here, we propose a theoretical method to estimate the SA concentration b

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Dissertations / Theses on the topic "Chemical ionisation"

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Williamson, Brian Leslie. "Structural studies using chemical ionisation ion trap mass spectrometry." Thesis, Nottingham Trent University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294164.

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Blake, Robert Stephen. "Monitoring tropospheric composition using time of flight chemical ionisation mass spectrometric techniques." Thesis, University of Leicester, 2005. http://hdl.handle.net/2381/30096.

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The use of proton transfer reactions (PTR) to quantify volatile organic compounds (VOCs) occurring in a variety of environments has increased in recent years. Here a 44.4 MBq 241Am source is used to ionise water vapour generating H3O+ protonated water molecules. This thesis describes how proton transfer reaction products fed into a time-of-flight mass spectrometer (TOF-MS), can produce simultaneous mass spectra for the entire mass range of reacting species in an experiment and produce a mass resolution m/Deltam greater than 1000.;The scope of application of the investigation has been expanded

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Bardwell, Max William. "Laboratory studies of peroxy radical reactions using turbulent flow chemical ionisation mass spectrometry." Thesis, Nottingham Trent University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.400114.

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Müller, David Benjamin [Verfasser]. "Development of a kinetically controlled plasma induced chemical ionisation source / David Benjamin Müller." Wuppertal : Universitätsbibliothek Wuppertal, 2019. http://d-nb.info/1206122234/34.

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Li, Yun [Verfasser]. "Atmospheric Trace Gas Measurements Using Chemical Ionisation Time-of-Flight Mass Spectrometry / Yun Li." Wuppertal : Universitätsbibliothek Wuppertal, 2021. http://d-nb.info/1234170744/34.

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Vaupré, Solenn. "Ionisation des nuages moléculaires par les rayons cosmiques." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAY049/document.

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Les rayons cosmiques (RC) ont un rôle fondamental sur la dynamique et l'évolution chimique des nuages moléculaires interstellaires, qui sont le lieu de formation stellaire et planétaire. Les RC sont probablement accélérés dans les enveloppes en expansion des rémanents de supernova (SNR), ainsi les nuages moléculaires situés à proximité peuvent être soumis à d'intenses flux de RC. Les protons relativistes ont principalement deux effets sur les nuages moléculaires : 1) en rencontrant le milieu dense, les protons de haute énergie (>280 MeV) induisent via la désintégration des pions l'émission

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Myatt, Christopher Paul. "The development of a matrix-assisted laser desorption/chemical ionisation time-of-flight mass spectrometer." Thesis, University of Warwick, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340903.

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Wilson, Robert. "The application of chemical ionisation mass spectrometry and linked scan techniques to the analysis of coal liquefaction products." Thesis, Heriot-Watt University, 1993. http://hdl.handle.net/10399/1412.

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Bacak, Asan Devrim. "Laboratory studies of peroxy radical reactions with NOx species using turbulent flow chemical ionisation mass spectroscopy." Thesis, Nottingham Trent University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403095.

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Moll, Victor. "Control and calibration of atmospheric pressure chemical ionisation processes in ion mobility spectrometry using piezoelectric dispensers." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/9132.

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If the analyses of trace components in complex organic samples are to be optimised, then these compounds must be isolated either physically or chemically from surrounding matrices. Ion mobility spectrometry (IMS) is an analytical technique used worldwide for the detection of on-site trace compounds. The technique can be optimised to isolate the target species from complex matrices through both physical separation, based on the mobility of the analyte ions at ambient pressure, and chemical discrimination through preferential ionisation of the target. Optimisation of the latter is commonly achie

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Books on the topic "Chemical ionisation"

1

Myatt, Christopher Paul. The development of a matrix-assisted laser desorption/chemical ionisation time-of-flight mass spectrometer. typescript, 1999.

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2

Gallis, M. A. The maximum entropy approach applied to energy exchange, chemical reactions and ionisation in the direct simulation Monte Carlo method for rarefied hypersonic flows. Imperial College of Science Technology and Medicine, 1993.

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3

Chemical ionization mass spectrometry. 2nd ed. CRC Press, 1992.

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4

Eland, John H. D., and Raimund Feifel. Core–core and core–valence double ionisation. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198788980.003.0008.

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Basic concepts of inner shell double ionisation phenomena are discussed and examples are presented. An empirical model to calculate single-site K-shell double ionisation energies is proposed and the enhanced chemical shifts in double L-shell ionisation are illustrated. Core–valence double ionisation spectra are shown to closely resemble photoelectron spectra from single ionisation in many cases. Core–valence double ionisation spectra of NH3, CO, CO2, OCS, CS2, CF4, Si(CH3)4, benzene, and C60 are presented with analysis. In the context of core ionisation it is customary to use the very economic

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Eland, John, and Raimund Feifel. Double Photoionisation Spectra of Molecules. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198788980.001.0001.

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This book contains spectra of the doubly charged positive ions (dications) of some 75 molecules, including the major constituents of terrestrial and planetary atmospheres and prototypes of major chemical groups. It is intended to be a new resource for research in all areas of molecular spectroscopy involving high energy environments, both terrestrial and extra-terrestrial. All the spectra have been produced by photoionisation using laboratory lamps or synchrotron radiation and have been measured using the magnetic bottle time-of-flight technique by coincidence detection of correlated electron

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Salman, Mahmood Shaker. Atomiser, source, inductively coupled plasmas in atomic fluorescence spectrometry (A.S.I.A.): A study of chemical and ionisation interference effects. 1989.

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7

Bowers, Michael T. Gas Phase Ion Chemistry: Volume 2. Elsevier Science & Technology Books, 2017.

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Bowers, Michael T. Gas Phase Ion Chemistry: Volume 1. Elsevier Science & Technology Books, 2016.

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Book chapters on the topic "Chemical ionisation"

1

Golecki, Philipp, Andreas Rothe, and Hubert Klar. "Multiple Ionisation of Atoms." In Current Developments in Atomic, Molecular, and Chemical Physics with Applications. Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0115-2_23.

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Southon, M. J., A. Harris, V. Kohler, and G. D. T. Spiller. "Some Aspects of Laser-Ionisation Mass-Analysis (LIMA) in Semiconductor Processing." In Springer Series in Chemical Physics. Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-82724-2_52.

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Bartlett, Philip L., and Andris T. Stelbovics. "Electron Impact Ionisation Cross-Sections of the Transition Metals." In Current Developments in Atomic, Molecular, and Chemical Physics with Applications. Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0115-2_22.

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Lange, H. R., J. F. Ripoche, A. A. Chiron, et al. "Temporal evolution of selfguided femtosecond laser pulses in the presence of Kerr-nonlinearity and ionisation." In Springer Series in Chemical Physics. Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-72289-9_35.

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Eyglunent, G., A. Leperson, G. Solignac, N. Marchand, and A. Monod. "Secondary Organic Aerosol Formation and Online Chemical Composition Analysis by Thermal Desorption Chemical Ionisation Aerosol Mass Spectrometer (TDCIAMS)." In Nucleation and Atmospheric Aerosols. Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6475-3_241.

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Weiner, J., W. Degraffenreid, and J. Ramirez-Serrano. "Polarization-Dependent Spectra in the Photoassociative Ionisation of Cold Atoms in a Bright Sodium Beam." In Current Developments in Atomic, Molecular, and Chemical Physics with Applications. Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0115-2_2.

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Schwenn, R. "Chemical Composition and Ionisation States of the Solar Wind Plasma as Characteristics of Solar Phenomena." In Reviews in Modern Astronomy. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-74188-3_8.

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8

Wyche, Kevin P., Christopher Whyte, Robert S. Blake, et al. "Atmospheric Monitoring With Chemical Ionisation Reaction Time-of-Flight Mass Spectrometry (CIR-TOF-MS) and Future Developments: Hadamard Transform Mass Spectrometry." In Advanced Environmental Monitoring. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6364-0_5.

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9

"Mass Analysis." In Gas Chromatography-Mass Spectrometry: How Do I Get the Best Results? The Royal Society of Chemistry, 2019. http://dx.doi.org/10.1039/9781782629283-00099.

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This chapter on mass spectrometry (MS) provides a compact overview of the area from the basic fundamentals to key applications selected to give the best understanding and indicate the proper use of GC-MS instrumentation. We start with a historical perspective on mass spectrometry, which is followed by a section on the foundations of atom theory which introduces important terminology and the laws of nature (the origin of atomic and molecular mass, natural distributions of isotopes, the mass defect and the monoisotopic as well as the nominal mass of a given ion etc.). Subsequently, the reader fi

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"Modifying an Existing SIFT-MS Method (Procedure 7)." In SIFT-MS. Royal Society of Chemistry, 2025. https://doi.org/10.1039/9781837677917-00295.

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SIFT-MS, with its chromatography-free, soft chemical ionisation approach to the analysis of volatile compounds requires different procedures for modifying validated test methods compared to GC. This chapter provides procedures for modifying SIFT-MS methods involving addition or removal of analytes, modification to product ion selections, a change of matrix, a shift of the analytical range, and the use of different instrument configurations and specifications. It provides the method developer with the basic, practical steps for efficient method modification.

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Conference papers on the topic "Chemical ionisation"

1

Kaminski, C., B. Löfstedt, R. Fritzon, and M. Aldén. "Two Photon Resonant Detection of N2 Using Polarization Spectroscopy and Laser Induced Fluorescence." In Laser Applications to Chemical and Environmental Analysis. Optica Publishing Group, 1996. http://dx.doi.org/10.1364/lacea.1996.lthd.4.

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Molecular nitrogen, N2, is one of the most important molecules in combustion and environmental diagnostics since it constitutes the major species of our atmosphere. For temperature and concentration measurements N2 CARS has been developed into a highly robust and accurate tool. There are environments where N2 concentrations are too low for CARS to be applicable. In this case excitation schemes can be used which have been developed to allow direct access to electronic resonances of N2 via multi-photon transitions [1]. Almost all detection schemes of these techniques employ further resonant mult

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Haisch, C., M. Clara, U. Panne, and R. Niessner. "Laser-Induced Plasma Spectroscopy (LIPS) for Environmental Applications." In Laser Applications to Chemical and Environmental Analysis. Optica Publishing Group, 1996. http://dx.doi.org/10.1364/lacea.1996.lwd.12.

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Laser-Induced Plasma Spectroscopy (LIPS) is a powerful instrument for quantitative elemental analysis of solid, liquid and gaseous matrices. For LIPS an intense, pulsed laser beam is focused on the sample of interest, resulting in the dissociation and partial ionisation of the sample in an expanding plasma cloud. Approximately 100 ns after the laser pulse recombination followed by relaxation of the atoms can be observed in the plasma cloud. The spectrally and temporally resolved detection of the atomic emission lines reveals analytical information about the elemental composition of a sample. T

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Mayhew, C. A., V. Ruzsanyi, P. Mochalski, H. Wiesenhofer, K. Unterkofler, and C. Ager. "OL.1 - Applications of Soft Chemical Ionisation Mass Spectrometric Instrumentation to Investigate the Human Volatilome for use in the Medical Sciences." In 17th International Meeting on Chemical Sensors - IMCS 2018. AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany, 2018. http://dx.doi.org/10.5162/imcs2018/ol.1.

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Baumert, T., R. Thalweiser, V. Weiss, E. Wiedenmann, and G. Gerber. "Femtosecond Dynamics of Nan and Hgn Metal-Cluster." In International Conference on Ultrafast Phenomena. Optica Publishing Group, 1994. http://dx.doi.org/10.1364/up.1994.thb.4.

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In recent years clusters and in particular metal clusters have been the fascinating subject of many experimental and theoretical studies. Cluster physics bridge the gap between molecular physics and solid state physics. Metal clusters exhibit distinct features ranging from molecular properties seen in small particles to solid state like behaviour of large aggregates. We report cluster size dependent studies of physical and chemical properties such as absorption resonances, lifetimes, decay channels and ionisation processes of the one- and two electron metal clusters Nan and Hgn. For these stud

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Xue, S., P. Proulx, M. I. Boulos, and T. Murphy. "A Thermal and Chemical Non-Equilibrium Model for Multi-Component Ar-H2 Plasma." In ITSC2005, edited by E. Lugscheider. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 2005. http://dx.doi.org/10.31399/asm.cp.itsc2005p0305.

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Abstract A thermal and chemical non-equilibrium model is developed for the modelling of multi-component supersonic induction Ar-H2 plasma flows. The species included in the modelling are electrons(e), hydrogen ion(H+), hydrogen atoms(H), hydrogen molecules(H2), Argon ions(Ar+) and Argon atoms(Ar). The negative hydrogen ions(H-), molecular hydrogen ions(H2+) and second order ionisation are neglected. The chemical reactions considered in the modelling are the H2 dissociations and the corresponding recombination, induced by Ar atom and H2, and the ionisations of the hydrogen and Argon and the cor

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Panasenkiene, Migle, Audrius Vaitkus, and Viktoras Masevičius. "The effect of bitumen ageing to fractional composition." In 6th International Conference on Road and Rail Infrastructure. University of Zagreb Faculty of Civil Engineering, 2021. http://dx.doi.org/10.5592/co/cetra.2020.1214.

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Bitumen is manufactured from different crude oil sources also by various refining technologies, therefore, the impact of ageing is different. Bitumen is a complex chemical mixture consisting of a large number and diversity of organic compounds, mostly hydrocarbons, and varying in molecular mass, polarity and aromaticity. Various polar and non-polar fragments in bitumen interacting in-between form the certain structures which changes bitumen behaviour. Since bitumen is assigned as a colloidal system, consisting of high molecular weight asphaltene micelles dispersed in a lower molecular weight m

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Dies, J., F. Tarrasa, L. Miralles, C. De las Cuevas, and J. J. Pueyo. "Heating-Irradiation Experiments to Assess the System Bentonite-Carbon Steel in a Radioactive Waste Underground Storage Facility." In ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1238.

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Abstract One of the principal components of the engineered barrier system of a deep radioactive waste disposal in granite is the buffer, made of compacted bentonite blocks. Since the beginning of the operation of the repository the buffer will be subjected to a gamma radiation and temperature fields. Also, in some tens of years bentonite will be fully saturated. Cylindrical samples of saturated and compacted bentonite (200 mm in length and 50 mm in diameter) with embedded carbon steel discs, have been exposed to heat and radiation to assess their potential alteration under repository condition

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