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Journal articles on the topic 'Chemical ionisation'

Author: Grafiati

Published: 11 December 2022

Last updated: 31 July 2025

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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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4

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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5

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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6

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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7

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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8

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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9

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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10

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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11

Bikova, Tatjana, Arnis Treimanis, Galina Rossinska, and Galina Telysheva. "On-line study of lignin behaviour in dilute alkaline solution by the SEC-UV method." Holzforschung 58, no. 5 (2004): 489–94. http://dx.doi.org/10.1515/hf.2004.074.

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Abstract The dynamic method for monitoring ionisation of the lignin functional groups in a 0.1 N NaOH solution at ambient temperature by means of the SEC technique with multiwave UV detection was performed. An increase in absorbance at 210, 278, 304, 320 and 350 nm was examined to reveal the ionisation dynamics in respect to functional groups’ acidity; that is, carboxyl groups, carbonyl- and double-bond conjugated phenol hydroxyls. A distinctive response of absorbance at 210 and 278 nm on the ionisation of carbonyl- and double-bond-conjugated phenols was found. Simultaneous characterisation of

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12

TABER, Keith S. "UNDERSTANDING IONISATION ENERGY: PHYSICAL, CHEMICAL AND ALTERNATIVE CONCEPTIONS." Chem. Educ. Res. Pract. 4, no. 2 (2003): 149–69. http://dx.doi.org/10.1039/b3rp90010j.

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13

Booth, A. Murray, Thomas J. Bannan, Med Benyezzar, et al. "Development of lithium attachment mass spectrometry – knudsen effusion and chemical ionisation mass spectrometry (KEMS, CIMS)." Analyst 142, no. 19 (2017): 3666–73. http://dx.doi.org/10.1039/c7an01161j.

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14

Dumlao, Morphy C., Laura E. Jeffress, J. Justin Gooding, and William A. Donald. "Solid-phase microextraction low temperature plasma mass spectrometry for the direct and rapid analysis of chemical warfare simulants in complex mixtures." Analyst 141, no. 12 (2016): 3714–21. http://dx.doi.org/10.1039/c6an00178e.

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15

Blake, Robert S., Saleh A. Ouheda, Corey J. Evans, and Paul S. Monks. "CF3+and CF2H+: new reagents for n-alkane determination in chemical ionisation reaction mass spectrometry." Analyst 141, no. 24 (2016): 6564–70. http://dx.doi.org/10.1039/c6an02118b.

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16

Reemtsma, Thorsten. "Flügel durch Elektrospray-Ionisation." Nachrichten aus der Chemie 52, no. 2 (2004): 217. http://dx.doi.org/10.1002/nadc.20040520250.

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17

Rauha, Jussi-Pekka, Jean-Luc Wolfender, Juha-Pekka Salminen, Kalevi Pihlaja, Kurt Hostettmann, and Heikki Vuorela. "Characterization of the Polyphenolic Composition of Purple Loosestrife (Lythrum salicaria)." Zeitschrift für Naturforschung C 56, no. 1-2 (2001): 13–20. http://dx.doi.org/10.1515/znc-2001-1-203.

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Phenolic compounds of purple loosestrife (Lythrum salicaria L.) w ere analysed by the use of liquid chromatography - mass spectrometry (LC/MS) equipped with atmospheric pressure chemical ionisation (APCI) and electrospray ionisation (ESI). The presence of vitexin and orientin as well as their isomers, isovitexin and isoorientin, were confirmed using ion trap multiple stage LC/MS3 analysis. Several phenolic acids and tannins were also detected. Ellagitannins, vescalagin and pedunculagin, are reported from the plant for the first time.

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18

Fordham, P., M. Deschasse, V. Haldys, J. Tortajada, and J. P. Morizur. "Gas-Phase Reactivity of Copper Cations with Ketones." European Journal of Mass Spectrometry 7, no. 4-5 (2001): 313–20. http://dx.doi.org/10.1255/ejms.441.

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Gas-phase ion–molecule reactions between copper ions and ketones were investigated. Organometallic adducts were prepared using a chemical ionisation/fast-atom bombardment source. Abundant pseudo-molecular ion adducts were observed in the Cu+-chemical ionisation mass spectra and their unimolecular decompositions were studied by tandem mass spectrometry. Mass-analysed ion kinetic energy spectroscopy revealed diagnostic fragmentation patterns. Losses of alkenes, losses of alkanes and dehydrogenation and dehydration reactions were observed, as well as eliminations of CuR (R = C nH2 n + 1). The ric

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19

Padovani, Marco, Shmuel Bialy, Daniele Galli, et al. "Cosmic rays in molecular clouds probed by H₂ rovibrational lines." Astronomy & Astrophysics 658 (February 2022): A189. http://dx.doi.org/10.1051/0004-6361/202142560.

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Context. Low-energy cosmic rays (<1 TeV) play a fundamental role in the chemical and dynamical evolution of molecular clouds, as they control the ionisation, dissociation, and excitation of H2. Their characterisation is therefore important both for the interpretation of observations and for the development of theoretical models. However, the methods used so far for estimating the cosmic-ray ionisation rate in molecular clouds have several limitations due to uncertainties in the adopted chemical networks. Aims. We refine and extend a previously proposed method to estimate the cosmic-ray ioni

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20

Bailac, Sandra, Dolores Barrón, Victoria Sanz-Nebot, and José Barbosa. "Determination of fluoroquinolones in chicken tissues by LC-coupled electrospray ionisation and atmospheric pressure chemical ionisation." Journal of Separation Science 29, no. 1 (2006): 131–37. http://dx.doi.org/10.1002/jssc.200500219.

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21

Yu, Huan, and Shan-Hu Lee. "Chemical ionisation mass spectrometry for the measurement of atmospheric amines." Environmental Chemistry 9, no. 3 (2012): 190. http://dx.doi.org/10.1071/en12020.

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Environmental contextAmines are of interest to atmospheric chemistry as they may be important gas-phase precursors for secondary aerosol formation. We describe a mass spectrometer for real-time in-situ measurements of gaseous alkyl amines in the atmosphere. This measurement technique will help to evaluate the contribution of amines to the formation of secondary aerosols, including secondary organic aerosol and new particle formation. AbstractWe describe a chemical ionisation mass spectrometer (CIMS) for the ambient measurement of amines, known as important gas-phase precursors for secondary ae

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22

Tihanyi, Karoly, Bela Noszal, Krisztina Takacs-Novak, and Katalin Deak. "Physico-Chemical Profiling of Antidepressive Sertraline: Solubility,Ionisation, Lipophilicity." Medicinal Chemistry 2, no. 4 (2006): 385–89. http://dx.doi.org/10.2174/157340606777723997.

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23

Addison, Joseph Bentil. "Application of pyrolysis-chemical ionisation mass spectrometry to lichenology." Analyst 110, no. 8 (1985): 933. http://dx.doi.org/10.1039/an9851000933.

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24

Boswell, S. M., R. E. Mather, and J. F. J. Todd. "Chemical ionisation in the ion trap: a comparative study." International Journal of Mass Spectrometry and Ion Processes 99, no. 1-2 (1990): 139–49. http://dx.doi.org/10.1016/0168-1176(90)85026-x.

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25

Helling, Ch, M. Worters, D. Samra, K. Molaverdikhani, and N. Iro. "Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b." Astronomy & Astrophysics 648 (April 2021): A80. http://dx.doi.org/10.1051/0004-6361/202039699.

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Context. Ultra-hot Jupiters are the hottest exoplanets that have been discovered so far. They present a unique possibility to explore hot and cold chemistry on one object. The tidally locked ultra-hot Jupiter HAT-P-7b has a day-to-night temperature difference of ≃2500 K, confining cloud formation to the nightside and efficient ionisation to the dayside. Both have distinct observational signatures. Aims. We analyse plasma and magnetic processes in the atmosphere of the ultra-hot Jupiter HAT-P-7b to investigate the formation of an ionosphere and the possibility of magnetically coupling the atmos

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26

Padovani, M., P. Hennebelle, and D. Galli. "Cosmic rays as regulators of molecular cloud properties." ASTRA Proceedings 1 (June 27, 2014): 23–27. http://dx.doi.org/10.5194/ap-1-23-2014.

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Abstract. Cosmic rays are the main agents in controlling the chemical evolution and setting the ambipolar diffusion time of a molecular cloud. We summarise the processes causing the energy degradation of cosmic rays due to their interaction with molecular hydrogen, focusing on the magnetic effects that influence their propagation. Making use of magnetic field configurations generated by numerical simulations, we show that the increase of the field line density in the collapse region results in a reduction of the cosmic-ray ionisation rate. As a consequence the ionisation fraction decreases, fa

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27

Bongiorno, David, Leopoldo Ceraulo, Lorenzo Camarda, et al. "Gas-Phase Ion Chemistry of Protonated Melatonin." European Journal of Mass Spectrometry 15, no. 2 (2009): 199–208. http://dx.doi.org/10.1255/ejms.968.

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The gas-phase ion chemistry of protonated melatonin has been investigated by mass spectrometric (MS) techniques involving chemical ionisation, fast atom bombardment and electrospray ionisation. Either naturally-occurring or collision-induced decomposition experiments have been carried out using side chain tetra-deuterium-labelled derivatives, as well as the corresponding N–D derivatives obtained by exchange with D2O. The analysis of experimental results allows definite pathways for the formation of the ion at m/z 174 to be assigned and sheds some more light on the overall fragmentation pathway

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28

Kaiser, D., E. Reusch, P. Hemberger, et al. "The ortho-benzyne cation is not planar." Physical Chemistry Chemical Physics 20, no. 6 (2018): 3988–96. http://dx.doi.org/10.1039/c7cp08055g.

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Mass-selected threshold photoelectron spectroscopy with synchrotron radiation and high-level quantum chemical computations revealed that the ground state of the ortho-benzyne cation exhibits a twisted geometry and that the ionisation energies have to be revised.

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29

Ellis, S. R., J. Soltwisch, M. R. L. Paine, K. Dreisewerd, and R. M. A. Heeren. "Laser post-ionisation combined with a high resolving power orbitrap mass spectrometer for enhanced MALDI-MS imaging of lipids." Chemical Communications 53, no. 53 (2017): 7246–49. http://dx.doi.org/10.1039/c7cc02325a.

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Coupling laser post-ionisation with a high resolving power MALDI Orbitrap mass spectrometer has realised an up to ∼100-fold increase in the sensitivity and enhanced the chemical coverage for MALDI-MS imaging of lipids relative to conventional MALDI.

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30

Moldovan, Zaharie. "Structural elucidation of organic contaminants by chemical ionisation mass spectrometry." Journal of Physics: Conference Series 182 (August 1, 2009): 012041. http://dx.doi.org/10.1088/1742-6596/182/1/012041.

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31

Domingues, Pedro, Mário M. Q. Simões, Ana M. Cardoso, et al. "Negative chemical ionisation and collision induced fragmentations of deprotonated hydroperoxides." Rapid Communications in Mass Spectrometry 13, no. 2 (1999): 93–96. http://dx.doi.org/10.1002/(sici)1097-0231(19990130)13:2<93::aid-rcm458>3.0.co;2-l.

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32

Gernátová, Matilda, Pavel Janderka, Andrea Marcinková, and Petr Ostřížek. "Use of Nafion as a Membrane Separator in Membrane Introduction Mass Spectrometry." European Journal of Mass Spectrometry 15, no. 5 (2009): 571–77. http://dx.doi.org/10.1255/ejms.1001.

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Nafion is a commercially available perfluorosulphonate cation exchange membrane commonly used as a perm-selective separator in chlor-alkali electrolysers and as the electrolyte in solid polymer fuel cells. In our experiments, a Nafion sheet membrane serves as the interface between the aqueous sample and the vacuum in membrane introduction to the mass spectrometer (MIMS). The penetration by volatile polar compounds (VOC—methanol, ethanol, 1-propanol), volatile non-polar compounds (VOC—benzene, toluene and p-xylene), semi-volatile low polar compounds (SVOC—fluorobenzene, chlorobenzene and bromob

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33

Rüger, Christopher P., Theo Schwemer, Martin Sklorz, Peter B. O’Connor, Mark P. Barrow, and Ralf Zimmermann. "Comprehensive chemical comparison of fuel composition and aerosol particles emitted from a ship diesel engine by gas chromatography atmospheric pressure chemical ionisation ultra-high resolution mass spectrometry with improved data processing routines." European Journal of Mass Spectrometry 23, no. 1 (2017): 28–39. http://dx.doi.org/10.1177/1469066717694286.

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The analysis of petrochemical materials and particulate matter originating from combustion sources remains a challenging task for instrumental analytical techniques. A detailed chemical characterisation is essential for addressing health and environmental effects. Sophisticated instrumentation, such as mass spectrometry coupled with chromatographic separation, is capable of a comprehensive characterisation, but needs advanced data processing methods. In this study, we present an improved data processing routine for the mass chromatogram obtained from gas chromatography hyphenated to atmospheri

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34

Praplan, A. P., S. Schobesberger, F. Bianchi та ін. "Elemental composition and clustering of α-pinene oxidation products for different oxidation conditions". Atmospheric Chemistry and Physics Discussions 14, № 22 (2014): 30799–833. http://dx.doi.org/10.5194/acpd-14-30799-2014.

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Abstract. This study presents the difference between oxidised organic compounds formed by α-pinene ozonolysis and hydroxyl radical (OH) oxidation in the CLOUD environmental chamber. The results from three Atmospheric Pressure interface Time-Of-Flight (APi-TOF) mass spectrometers measuring simultaneously the composition of naturally charged, as well as neutral species (via chemical ionisation with nitrate) are discussed. Natural chemical ionisation takes place in the CLOUD chamber and organic oxidised compounds form clusters with nitrate, bisulphate, bisulphate/sulphuric acid clusters, ammonium

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35

Le Breton, M., M. R. McGillen, J. B. A. Muller, et al. "Airborne observations of formic acid using a chemical ionisation mass spectrometer." Atmospheric Measurement Techniques Discussions 4, no. 5 (2011): 5807–35. http://dx.doi.org/10.5194/amtd-4-5807-2011.

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Abstract. The first airborne measurements of formic acid mixing ratios over the United Kingdom were measured on the FAAM BAe-146 research aircraft on the 16 March 2010 with a chemical ionisation mass spectrometer using I− reagent ions. The I− ionisation scheme was able to measure formic acid mixing ratios at 1 Hz in the lower boundary layer. In-flight standard addition calibrations from a formic acid source were used to determine the instrument sensitivity of 35±6 ion counts pptv−1 s−1 and a limit of detection of 25 pptv. Routine measurements were made through a scrubbed inlet to determine the

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36

Pfeifer, Thomas, Uwe Klaus, Ralf Hoffmann, and Michael Spiteller. "Characterisation of humic substances using atmospheric pressure chemical ionisation and electrospray ionisation mass spectrometry combined with size-exclusion chromatography." Journal of Chromatography A 926, no. 1 (2001): 151–59. http://dx.doi.org/10.1016/s0021-9673(01)00805-6.

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37

Eitner, P., M. Bergemann, C. J. Hansen, et al. "Observational constraints on the origin of the elements." Astronomy & Astrophysics 635 (March 2020): A38. http://dx.doi.org/10.1051/0004-6361/201936603.

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The abundance ratios of manganese to iron in late-type stars across a wide metallicity range place tight constraints on the astrophysical production sites of Fe-group elements. In this work, we investigate the chemical evolution of Mn in the Milky Way galaxy using high-resolution spectroscopic observations of stars in the Galactic disc and halo stars, as well as a sample of globular clusters. Our analysis shows that local thermodynamic equilibrium (LTE) leads to a strong imbalance in the ionisation equilibrium of Mn I and Mn II lines. Mn I produces systematically (up to 0.6 dex) lower abundanc

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38

Mahla, Sapna, and Bobby Antony. "Positron scattering from structurally related biomolecules." RSC Advances 14, no. 2 (2024): 1397–406. http://dx.doi.org/10.1039/d3ra06227a.

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Charnley, S. B., and W. G. Roberge. "Chemical Effects of Shear Alfvén Waves in Molecular Clouds." Symposium - International Astronomical Union 150 (1992): 155–56. http://dx.doi.org/10.1017/s0074180900089907.

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We consider the propagation of low-amplitude MHD waves in partially-ionised plasmas. Ion-neutral drift (ambipolar diffusion) can lead to significant variations in the deuterium fractionation ratios of several molecules (e.g. HCO+ and N2H+) on spatial scales of between a few hundredths and a few tenths of a parsec, depending upon the fractional ionisation of the plasma. It is possible that interstellar Alfvén waves could be detected by molecular spectroscopy and that these waves may produce other small-scale abundance gradients in molecular clouds.

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40

Mele, Andrea, Walter Panzeri, Antonio Selva та Pierluigi Mauri. "Letter: Fast Atom Bombardment, Electrospray, Ionspray and Tandem Mass Spectrometry of 1:1 β-Cyclodextrin/5-Methoxytryptamine Hydrochloride Host—Guest Complex: Host Protonation and Fragmentation Due to Guest Deamination". European Journal of Mass Spectrometry 6, № 2 (2000): 169–74. http://dx.doi.org/10.1255/ejms.319.

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The 1:1 inclusion complex of β-cyclodextrin (βCD) with 5-methoxytryptamine (5MTA) hydrochloride was studied by mass spectrometry (MS) and tandem-MS with fast atom bombardment (FAB), electrospray (ES) and ionspray (IS) ionisation and triple quadrupole or ion trap analysers. A protonated 1:1 βCD/MTA gaseous association was always observed; the protonated species of deaminated 5MTA and of some typical βCD fragments were obtained, in addition to the expected protonated 5MTA, as tandem-MS dissociation products. A reaction pattern starting from the deamination of protonated 5MTA, as a recently descr

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41

Cercola, Rosaria, Natalie G. K. Wong, Chris Rhodes, et al. "A “one pot” mass spectrometry technique for characterizing solution- and gas-phase photochemical reactions by electrospray mass spectrometry." RSC Advances 11, no. 32 (2021): 19500–19507. http://dx.doi.org/10.1039/d1ra02581c.

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42

Poustka, J., J. Hajšlová, K. Holadová, and K. Nováková. "Potential of liquid chromatography–atmospheric pressure chemical ionisation tandem mass spectrometry for determination of fosetyl-aluminium residues in dried hops." Czech Journal of Food Sciences 22, No. 1 (2011): 24–28. http://dx.doi.org/10.17221/3403-cjfs.

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New analytical procedure for the determination of fosetyl-aluminium in hop cones (also called &ldquo;hops&rdquo;) was developed. Liquid chromatography&ndash;atmospheric pressure chemical ionisation tandem mass spectrometry (LC&ndash;APCI-MS/MS) allowed a highly selective determination of this fungicide which facilitated the sample preparation. The sufficiently low detection limit (1 mg/kg of dried hops) with the acceptable method performance characteristics (RSD 9%, recovery 76% &ndash; at the level of 10 mg/kg) complies with the need to inspect the observance of maximal re

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Jagošová, Klára, Martin Moník, Jaroslav Kapusta, et al. "Secret Recipe Revealed: Chemical Evaluation of Raw Colouring Mixtures from Early 19th Century Moravia." Molecules 27, no. 16 (2022): 5205. http://dx.doi.org/10.3390/molecules27165205.

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An archaeological excavation in Prostějov (Czech Republic) revealed a workshop of a local potter with colourless, pink, and blue powders presumably used to produce faience/surface decoration. A comprehensive analytical study, which combined elemental and molecular analysis techniques, was performed to shed light on the chemical composition of these unique findings. Scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM EDX), inductively coupled-plasma mass spectrometry (ICP MS), flow injection analysis (FIA) with electrospray ionisation mass spectrometry (ESI MS), laser de

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Ercolano, B., M. J. Barlow, and P. J. Storey. "Three-Dimensional Ionisation, Dust RT and Chemical Modelling of Planetary Nebulae." Proceedings of the International Astronomical Union 2, S234 (2006): 391. http://dx.doi.org/10.1017/s1743921306003395.

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Michalczuk, Bartosz, Ladislav Moravský, Peter Papp, Pavel Mach, Martin Sabo, and Štefan Matejčík. "Isomer and conformer selective atmospheric pressure chemical ionisation of dimethyl phthalate." Physical Chemistry Chemical Physics 21, no. 25 (2019): 13679–85. http://dx.doi.org/10.1039/c9cp02069a.

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The ionization mechanism of Atmospheric Pressure Chemical Ionization (APCI) for dimethyl phthalate isomers using an Ion Mobility Spectrometry (IMS) experiment combined with Density Functional Theory (DFT) calculations.

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46

Schlütter, J., R. Schott, M. Olzmann, and K. Kleinermanns. "State Selective Investigation of Chemical Reactions by Laser Fluorescence and -Ionisation." Zeitschrift für Physikalische Chemie 188, Part_1_2 (1995): 143–58. http://dx.doi.org/10.1524/zpch.1995.188.part_1_2.143.

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Favretto, Donata, Pietro Traldi, and Adriano Marcelli. "High performance liquid chromatography/ electrospray ionisation and atmospheric pressure chemical ionisation mass spectrometry for the analysis of butylated amino resins." European Journal of Mass Spectrometry 4, no. 1 (1998): 371. http://dx.doi.org/10.1255/ejms.235.

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48

Kaese, Peter, Andreas Bruchmann, and Rüdiger Kohl. "Flüssigkeiten als Reaktandgas in der Chemischen Ionisation." Nachrichten aus der Chemie 53, no. 9 (2005): 913–16. http://dx.doi.org/10.1002/nadc.20050530920.

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Koch, K., and H. Schnöckel. "Strukur und Reaktivität von Al2Cp*+ in der Gasphase. Ein experimenteller Beitrag zur Problematik der Aluminium-Aluminium- Doppelbindung / Structure and Reactivity of Al2Cp*+ in the Gas Phase. Experiments on the Problematic Nature of the Aluminum-Aluminum-Multiple Bond." Zeitschrift für Naturforschung B 59, no. 11-12 (2004): 1512–18. http://dx.doi.org/10.1515/znb-2004-11-1222.

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The cation Al2Cp*+ descending from the tetrahedral Al4Cp*4 Cluster after using LDI as ionisation method in an FT-ICR mass spectrometer reacts with Cl2 in the gas phase. The investigation of this reaction together with quantum chemical calculations gives a new approach to the question of existence and stability of an aluminum-aluminum double bond.

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Lerch, Oliver, and Peter Zinn. "Derivatisation and gas chromatography–chemical ionisation mass spectrometry of selected synthetic and natural endocrine disruptive chemicals." Journal of Chromatography A 991, no. 1 (2003): 77–97. http://dx.doi.org/10.1016/s0021-9673(03)00175-4.

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