^*Indicates author to whom correspondence should be addressed

Simulation of the collisional cooling effect for binary and ternary buffer gas mixtures in a quadrupole ion trap mass spectrometer

Hui-Fen Wu,^* Li-Wei Chen, Jhen-Chen Wanga and Ya-Ping Lin
Department of Chemistry, Tamkang University, Tamsui, Taipei Hsien, 25137, Taiwan, ROC

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DOI: 10.1255/ejms.374

Rearrangement and fragmentation of isomeric C₄H₅O anions upon collision activation: a combined experimental and ab initio study

Suresh Dua, John H. Bowie and John M. Hevko
Department of Chemistry, The University of Adelaide, South Australia 5005, Australia

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DOI: 10.1255/ejms.373

Structural characterization of aromatic polyester resins by matrix-assisted laser desorption/ionization mass spectrometry

Olli Laine and Pirjo Vainiotalo^*
University of Joensuu, Department of Chemistry, PO Box 111, 80101 Joensuu, Finland. E-mail: Pirjo.Vainiotalo@joensuu.fi
Heidi Österholm
Fortum Oil and Gas, Technology Centre, PO Box 310, 06101 Porvoo, Finland
Hannele Järvinen
Neste Chemicals, Polyester Europe North, PO Box 320, 06101 Porvoo, Finland

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DOI: 10.1255/ejms.372

Identification of morphine and morphine-6-glucuronide in the adrenal medullary chromaffin PC-12 cell line by nano-electrospray ionization double quadrupole orthogonal-acceleration time-of-flight mass spectrometry

Wei Zhu, Yannick Goumon and George B. Stefano^*
Neuroscience Research Institute, State University of New York, College at Old Westbury, Old Westbury, NY 11568, USA E-mail: gstefano@li.net
Geert Baggerman
Zoological Institute, Catholic University of Leuven, 3000 Leuven, Belgium
Meinhart H. Zenk
Biozentrum Pharmazie, Universität Halle, Weinbergweg 22, 06120 Halle/Saale, Germany

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DOI: 10.1255/ejms.384

A practical protocol for the reduction of disulfide bonds in proteins prior to analysis by mass spectrometry

Michaela Scigelova, Philip S. Green, Anastassios E. Giannakopulos,^* Alison Rodger, David H.G. Crout and Peter J. Derrick
Department of Chemistry and Institute of Mass Spectrometry, University of Warwick, Coventry CV4 7AL, UK E-mail: msrhf@dredd.csv.warwick.ac.uk

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DOI: 10.1255/ejms.385

Letter: Calibration of electrospray mass spectrometers with rccc-2,8,14,20-tetra-n-octyl-5,11,17,23-tetrahydroxyresorc[4]arene in the high mass range up to m/z 6000

Matthias C. Letzel, Ceno Agena and Jochen Mattay^*
Organische Chemie I, Fakultät für Chemie der Universität Bielefeld, Germany

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DOI: 10.1255/ejms.386

Isotopic deconvolution of matrix-assisted laser desorption/ionization mass spectra for substance-class specific analysis of complex samples

Marco Wehofsky and Ralf Hoffmann
Biologisch-Medizinisches Forschungszentrum, University of Düsseldorf, Germany
Martin Hubert
Institute of Inorganic and Analytical Chemistry, University of Giessen, Germany
Bernhard Spengler^*
Biologisch-Medizinisches Forschungszentrum, University of Düsseldorf and Institute of Inorganic and Analytical Chemistry, University of Giessen, Germany. E-mail: Bernhard.Spengler@anorg.Chemie.uni-giessen.de

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DOI: 10.1255/ejms.387

The formation of protonated dimethyl ether from the metastable molecular ions of 1-methoxy-2-propanol, CH₃OCH₂CH(OH)CH₃

Satoshi Nakajima, Tatsuki Asakawa, Osamu Sekiguchi and Susumu Tajima ^*
Chemistry and Materials Science, Gunma National College of Technology, Maebashi, Gunma 371-8530, Japan
Nico M.M. Nibbering ^*
Physical Chemistry, Laser Center, Division Chemistry, Faculty of Exact Sciences, Free University, De Boelellan 1083, 1081 HV Amsterdam, The Netherlands

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DOI: 10.1255/ejms.389

Electron impact ionization of dicyclopentadienyl-manganese and cyclopentadienyl-manganese-tricarbonyl compared with dimanganese- decacarbonyl: appearance energies, bond energies and enthalpies of formation

Joachim Opitz
Universität Stuttgart, Institut für Organische Chemie, Pfaffenwaldring 55, D-70569 Stuttgart, Germany

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DOI: 10.1255/ejms.390

Specific electron ionization-induced fragmentation of secondary alcohol methoxyacetates

Vladimir G. Zaikin, Roman S. Borisov and Vladislav V. Luzhnov
Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninskii pr. 29, 117912 Moscow, Russia. E-mail: zaikin@ips.ac.ru

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DOI: 10.1255/ejms.391

Evaluating the role of the ligand in the fragmentation reactions of platinum(II) complexes of aliphatic dipeptides. Electrospray ionization tandem mass spectrometry of [Pt(L₃)M]²⁺ and [Pt(L₃)M – H]⁺ ions [L₃ = (H₃N)₃, diethylenetriamine and terpyridine; M = gly-gly, ala-gly and gly-ala]

Michelle L. Styles, Richard A.J. O’Hair^* and W. David McFadyen
School of Chemistry, University of Melbourne, Victoria 3010, Australia. E-mail: rohair@unimelb.edu.au

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DOI: 10.1255/ejms.392

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