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![]() International Journal of Analytical Mass Spectrometry and Chromatography, 2013, 1, 1-4 http://dx.doi.org/10.4236/ijamsc.2013.11001 Published Online September 2013 (http://www.scirp.org/journal/ijamsc) Editorial: The Newly Launched International Journal of Analytical Mass Spectrometry and Chromatography Ilia Brondz1,2 1Department of Biosciences, University of Oslo, Oslo, Norway 2R&D Department of Jupiter Ltd., Ski, Norway Email: ilia.brond[email protected], ilia[email protected] Received July 1, 2013; revised August 4, 2013; accepted September 1, 2013 Copyright © 2013 Ilia Brondz. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. We are now launching the first issue of the first volume of the International Journal of Analytical Mass Spec- trometry and Chromatography (IJAMSC). This newly launched journal is an open access journal, whose pri- mary aim is to provide a platform for researchers and practitioners, worldwide, to promote, share, and discuss various new issues and developments in all areas of Mass Spectrometry and Chromatography, as well as theoretical developments in all areas related to this dynamic and developing field of the sciences. We hope to become an example to other open access journals in Scientific Re- search Publishing, Inc., and to journals beyond the boundaries of our parent corporation. We aim to set an example as a progressive organization that helps authors to share their interests, results, and opinions with other researchers and with readers from the general public, industry, and government authorities. We also intend to cooperate with universities, research institutes, industry, and government authorities to promote progressive ideas and information, and to curb plagiarism, falsifications, and disinformation, such as the cases disclosed in [1]. We will resurrect important institutions of journalistic practice, such as a “Letters to the Editor” the section, which has been done away with by many publishers, such as those that follow the example of Elsevier; in the attempts to conceal mistakes and the disability of editors. The reason for the decision by one Elsevier journal to abolish its “Letters to the Editor” section is described in [1] on p. 184 as follows: “The chief editor of Journal of Pharmaceutical and Biomedical Analysis (JPBA) Mr. Bezhan Chankvetadze when confronted with the “Letters to the Editor” regarding cases of plagiarism and inap- propriate performance in review and editorial work, went so far as to abolish the “Letter to the Editor” sec- tion in the journal, thus removing this forum…”. The suggestion of direct corruption, in terms of “The close relationship the publisher, Elsevier, has with phar- maceutical companies”, is highlighted in the article “El- sevier published 6 fake journals”, which is posted on- line by Bob Grant: http://www.the-scientist.com/blog /display/55679/#ixzz0mmsPoMlS. In the article, the wri- ter states: “Scientific publishing giant Elsevier put out a total of six publications between 2000 and 2005 that were sponsored by unnamed pharmaceutical companies and looked like peer reviewed medical journals, but did not disclose sponsorship, the company has admitted...”. Elsevier did not deny colluding with the pharmaceutical industry. For more detail about cases of inappropriate editorials and publications, see [1]. The above examples show that readers are not pro- tected from disinformation by well-established publishers or high impact factor journals. We will do our best to present in our publications the truth, the whole truth, and nothing but the truth. It is our slogan. However, we will not prevent discussion or the expression of new ideas, facts, and contradictions, as only through discu ssion and ar gument can scien tific facts be born and tested. IJAMSC welcomes papers relevant to the development and practice of sample preparation and specific derivati- zation for mass spectrometry (MS) and chromatography, and the connection of mass spectrometers to other ana- lytical instrumentation for providing high accuracy meas- urements, such as in Gas Chromatography-Mass Spec- trometry (GC-MS), Gas Chromatography-Mass Spectro- metry with Supersonic Molecular Beams (GC-MS with SMB), High-Speed Gas Chromatography-Mass Spectro- metry (HSGC-MS), Supercritical Fluid Chromatography- Mass Spectrometry (SFC-MS), and Liquid Chromatog- raphy-Mass Spectrometry (LC-MS). We also welcome research using such instrumentation for molecular struc- ture elucidation in organic and inorganic molecules. The use of MS equipment as a universal detector in multi- detection systems for enhanced recording and elucidation of the detailed composition of natural substances is de- manding; hence, both natural and synthetic samples will be of interest. This technique is described in the paper C opyright © 2013 SciRes. IJAMSC ![]() I. BRONDZ 2 “Supercritical fluid chromatography of secondary me- tabolites and multi-analysis by mass spectrometry-ultra- violet and corona charged aerosol detection” [2,3]. Mass Spectrometry Mass spectrometry is widely discussed in the literature as a detection tool and in relation to analytical methods of separation, such as GC, SCF, high performance liquid chromatography (HPLC), capillary electrophoresis (CE), thin layer chromatography (TLC) and as an analytical tool for the determination of molecular structures. MS is a powerful tool for structural analysis. Alone, MS is not enantiospecific, but in combination with HPLC, SFC, GC, CE, or even TLC, it can adequately demonstrate the presence of isomers and enantiomers. The recording by MS of enantiomers in a mixture is possible only by using chromatography w ith chiral co lumns or if chir al selectors are used in the resolution process. MS is an excellen t tool for the evaluation of the constitutional, cis- or trans-, geometric, or other isomers, alone or in conjunction with chromatography. By using fastseparation techniques in conjunction with MS, it is possible to monitor syntheses or the dynamics of reactions. Improvements in the construction of MS apparatuses are of significant importance, together with the develop- ment and improvement of software and the analytic methodology. From its original primitive form, MS instrumentation has been developed, step by step, into the super-modern, complex, multitasking equipment of today. The first mass spectrometers were of the single-focus type, in which the positive ions were deflected through 180˚ sec- tor in a magnetic field, H. The focused ion beams were recorded on a photographic plate. The first mass spectrometer was developed by Arthur J. Dempster and Francis W. Aston in 1918/19 [4]. Their invention was actually a mass spectrograph. Arthur Dempster was born in Canada in 1886, and studied in Canada, Germany, and the USA. He conducted his re- search at the University of Chicago from 1916 until his death in 1950. Besides the development of MS, he is known for the discovery of the uranium isotope 235U. He was also a member of the Manhattan Project. Francis Aston was born in Birmingham in 1877, and in 1893 enrolled at the University of Birmingham, where he studied physics under John Henry Poynting and chemis- try under Frankland and Tilden. However, the history of MS actually begins with a discovery made by a German scientist, Eugen Goldstein (1850-1930) . In 1886, he observed r ays in gas discharges under low pressure. He discovered that tubes with a per- forated cathode emitted a glow at the cathode end. The rays propagated from the anode and thro ugh the channe ls in the perforated cathode, in a direction opposite to that taken by charged cathode rays. He called these rays “Kanalstrahlen” or “canal rays”. In 1899, the German physicist Wilhelm Wien (Wilhelm Carl Werner Otto Fritz Franz Wien, 1864-192 8) found that electric or mag- netic fields could deflect the canal rays, and he con- structed a device that separated the positive rays accord- ing to their charge-to-mass ratio. The rays were posi- tively charged particles-later found to be ions. The be- havior of ions in a homogeneous, linear, static magnetic field obeys the Lorentz force law, and this holds true in a sector instrument. The Lorentz equation, given below, is fundamental to all MS techniques: F qE vB , where E is the strength of the electric field, B is the in- duction of the magnetic field, q is the particle’s electric charge, and v is the particle’s velocity. An ion with a charge e accelerated through a voltage V will acquire a translational (kinetic) energy equal to eV. Therefore, the kinetic energy of an ion is independent of its mass. Because ½mv2 = eV, where m is the mass of the ion and v is the magnitude of its velocity after its accel- eration in an electric field; more massive ions will travel more slowly. Ions will be accelerated under the influ ence of a magnetic field of magnitude B. The magnitude of the acceleration is v2/r, and it is directed perpendicular to the particle’s movement, which implies that the particle will describe a circular trajectory with radius r. From New- ton’s second law of motion and the Lorentz force law, it follows that 2 BeVmv r. Combining this equation with½mv2 = eV results in 222me BrV. From this equation, it follows that for a given magnetic field strength and accelerating voltage, ions with a given m/e ratio will follow a distinct path of rad ius r, wher e r is determined by m/e. It is possible to sweep the ions of various m/e ratios past the exit slit, either by varying B while holding V constant, o r by vary ing V while holding B constant. The first technique is called “magnetic scan- ning”, and the second technique is called “electric scan- ning” or “voltage scanning”. It is not necessary t o have an angle of defle ction of 180˚. A 90˚ sector field instrument is less expensive and easier to produce. It also has the advantage that the ion source and collector are more accessible than in the 180˚ sector version of the instrument. A 90˚ sector field instrument should be seen as a mod- ern version of the original instrument developed by Dempster. The general problem with these instruments is that the resolving power is limited b y the initial spread of the translational energies of the ions on leaving the source. Copyright © 2013 SciRes. IJAMSC ![]() I. BRONDZ 3 The initial spread of the translation al energies depends on the Boltzmann distribution and the nonhomogeneous field in the source. These problems were overcome in the ap- paratus constructed by Mattauch and Herzog [5] by passing the ions through an electric field before their passage through the magnetic field. In Mattauch and Herzog’s instrument, the electrostatic analyzer had a sector of 31˚82’ and the magnetic analyzer had a sector of 90˚. The r1 was the minimum focal radius and the r2 was the maximum focal radius. In this instrument, photo- graphic plates were used to record the ions. The photo- graphic plates were placed at 45˚ relative to the r2. This method of analysis is called “mass spectroscopy”. In modern instruments, electronic devices are used for pr ower and rela tive pre cision of a sp eci in MS instrument to produce high qu in spects of M S an REFERENCES [1] I. Brondz, “Hromatography and nd and J. Lefler, “Supercritical Fluid Differentia- hod of Positive Ray Analy- ecise and sensitive detection; these instruments are called “mass spectrometers” and the method is “mass spectrometry”. Later, in 1953, Johnson and Nier published an article describing another configuration of sectors in a MS instrument [6]. Accounts that give more detail on the sectors in MS instruments are available in the literature [7,8]. In the instrument of Johnson and Nier, the electro- static analyzer field is 90˚ and the magnetic analyzer field is 60˚. There are several other types of MS instruments, such as the Hinterberger-Konig mass spectrometer, with a 42˚3’ electric sector and a 130˚ magnetic sector. Mass spectrometers can have also a Takeshita geometry, with a 54˚43’ electric sector and a 180˚ magnetic sector, a Ma- tsuda geometry, with an 85˚ electric sector and a 72˚50’ magnetic sector; or a Bainbridge-Jordan geometry, with a 127˚30’ electric sector and a 60˚ magnetic sector, with a resolving power of 600 and a relative precision of one part in 10,000 [9,10]. The reso lving pfic strument are very important characteristics when re- cording ions with low m/e ratios. For verification of the isomeric differences between primaquine and its con- taminating agen t, quinocide, an instru ment with high pre- cision and high resolving power was used to record the m/e 44 ions [11]. The ability of a ality, formative spectra also depends on the way in which th e sample is introduced into the instrument. Direct introd uc- tion is preferable, but it is not always possible. In some analyses of complex mixtures, the compounds must be separated prior to the MS analysis. A combination of HPLC or SFC with MS creates conditions similar to those of chemical ionization, because of the excess of other substances, such as water, alcohol or CO2. Water and alcohol are introduced into a MS instrument from the HPLC mobile phase, or CO2 is introduced from the SFC mobile phase. An excess of mobile phase from chroma- tographic devices quenches ion production and can also create adduct ions. GC-MS spectra giv e m ore i nfor m ation about the structure of a molecule than do HPLC-MS or SFC-MS spectra. To ensure that an ion of a given mass produces a discernible peak in the spectrum, the best combination to use is GC-MS with SMB, because of short analysis times, low temperatures in the injector, trans- ference line, and detection device, and, especially, “cold EI” and a “fly-through ion source” [12,13]. This journal welcom es di scussions of al l a d Chromatography instrumentation, theory, practices, and appl ications, in di fferent fiel ds of science and i ndustry as well as advice for improving the journal itself. istorical Overview of Ch Related Techniques in Analysis of Antimalarial Drug Primaquine,” Nova Science Publishers, Inc., New York, 2011, pp. 183-187. [2] I. Brondz, K. Høila Chromatography of Secondary Metabolites and Multi- Analysis by Mass Spectrometry-Ultraviolet and Corona Charged Aerosol Detection,” 12th Norwegian MS-Winter Meeting, Hafjell, 21-24 January 2007, p. 63. [3] I. Brondz and K. Høiland, “Chemotaxonomic tion between Cortinarius infractus and Cortinarius sub- tortus by Supercritical Fluid Chromatography Connected to a Multi-Detection System,” Trends in Chromatogra- phy, Vol. 4, 2008, pp. 79-87. [4] A. J. Dempster, “A New Met sis,” Physical Review, Vol. 11, No. 4, 1918, pp. 316-325. doi:10.1103/PhysRev.11.316 [5] J. Mattauch and R. F. K. Herzog, “Mass Spectrograph,” Zeitschrift für Physik, Vol. 89, 1934, pp. 786-795. doi:10.1007/BF01341392 [6] E. G. Johnson and A. O. Nier, “Angular Aberrations in Sector-Shaped Electromagnetic Lenses for Focusing Beams of Charged Particles,” Physical Review, Vol. 91, No. 1, 1953, pp. 10-17. doi:10.1103/PhysRev.91.10 [7] J. De Laeter and M. D. Kurz, “Alfred Nier and the Sector Field Mass Spectrometer,” Journal of Mass Spectrometry, Vol. 41, No. 7, 2006, pp. 847-854. doi:10.1002/jms.1057 [8] IUPAC, “IUPAC Compendium of Chemical Terminol- d Energy,” ogy,” Blackwell Science Inc., Oxford, 1997. [9] K. T. Bainbridge, “The Equivale nce of Mass an Physical Review, Vol. 44, No. 2, 1933, p. 123. doi:10.1103/PhysRev.44.123.2 [10] G. Audi, “The History of Nuclidicmasses and of Their . Mantzilas, E. Hvat- A. Amirav, “Analysis of raphy-Mass Spectrometry with Supersonic Molecular Evaluation,” International Journal of Mass Spectrometry, Vol. 251, No. 2-3, 2006, pp. 85-94. [11] I. Brondz, U. Klein, D. Ekeberg, D tum, H. Schultz and F. S. Mikhailitsyn, “Nature of the Main Contaminant in the Drug Primaquine Diphosphate: GC-MS Analysis,” Asian Journal of Chemistry, Vol. 17 No. 3, 2005, pp. 1678-1688. [12] I. Brondz, A. B. Fialkov and Quinocide in Unprocessed Primaquine Diphosphate and Primaquine Diphosphate Tablets Using Gas Chromatog- Copyright © 2013 SciRes. IJAMSC ![]() I. BRONDZ Copyright © 2013 SciRes. IJAMSC 4 Beams,” Journal of Chromatography A, Vol. 1216, 2009 pp. 824-829. doi:10.1016/j.chroma.2008.11.043 [13] A. Amirav, “What Can Be Improved in GC-MS: When Multi Benefits Are Transformed into a GC-MS Revolu- tion,” International Journal of Analytical Mass Spec- trometry and Chromatography (IJAMSC), Vol. 1, No. 1, 2013, pp. 31-47. |





