first_page settings Order Article Reprints Font Type: Arial Georgia Verdana Font Size: Aa Aa Aa Line Spacing: Column Width: Background: Open AccessCommentary Comments on “E. Pungor, The New Theory of Ion Selective Electrodes. Sensors 2001, 1, 1-12” by K. L. Cheng Department of Physics, University of Missouri-Kansas City, Kansas City, Missouri 64110, USA Sensors 2004, 4(1), 14-15; https://doi.org/10.3390/s40100014 Received: 15 March 2004 / Accepted: 23 March 2004 / Published: 30 March 2004 Download Download PDF Download PDF with Cover Download XML Download Epub Versions Notes The techniques and information described in this paper [1] are nothing new. For instance, memory effect, x-ray photoelectron spectroscopy, no ion penetration from the membrane surface to the inside membrane, the K+ adsorption at the valinomycin, etc. are well known [2]. In particular, the author did not cite many references for the information. For instance, the K+ and membrane graph (Fig. 1) was already reported in the literature, the author just copied it without citation or having permission from the publisher (Ref. 3, Fig. 3a). Without references, it gives the readers an impression that the information came from the author's original work. This violates the international code of ethics conduct.The importance of the “new theory” and “how is the electrode potential produced” is emphasized in the paper [1]. However, the author only stated in about 10 lines at the end of paper to conclude with a Gibbs–Duham thermodynamic equation, –ΔG = nFE. He stated the ion adsorption and avoided its basis as being the capacitor theory. His simple statement indicated that an electrode potential is caused by charge separation at the surface of the electrode and that the interpretation is connected with the chemisorption of ion from the solution without any detailed discussions and logic supports. Obviously, he tried on purpose to avoid the key word capacitor because we proposed the capacitor theory. Not only is the ion adsorption by the electrode surface well known [2], the thermodynamics has nothing to do with the mechanism. Ion adsorption and charge density are closely associated with a capacitor. The mechanism should be emphasized in any new theory. The author has been unfamiliar with the difference between thermodynamics and mechanism; he mixed them up in his previous paper [4]. The new theory or mechanism in this paper is just a replica of the one reported before [4]. One should read my paper to understand the difference between thermodynamics and mechanism and their applications in ion selective electrode potential development [5]. We may have the same ΔG but different mechanisms. A scientific paper should be carefully prepared to benefit the readers, not playing magic tricks to mislead them. I have recently emphasized the importance of an author's careful attitude in writing chemical publications [6]. ReferencesPungor, E. The New Theory of Ion Selective Electrodes. Sensors 2001, 1, 1–12. [Google Scholar]Cheng, K. L. Capacitor theory for nonfaradaic potentiometry. Microchem. J. 1990, 42, 524. [Google Scholar]Cheng, K. L. A capacitor model for membrane electrodes. Proceedings, 31st IUPAC Congress Anal. Chem. Div., Sofia, Bulgaria; 1987; pp. 173–187. [Google Scholar]Cheng, K. L. Recent development of non-faradaic potentiometry. Microchem. J. 2002, 72, 269. [Google Scholar]Buck, R.P.; Lindner, E. Studies of potential generation across membrane sensors at interfaces and through back. Acc. Chem. Rev. 1998, 31, 257–266. [Google Scholar]Pungor, E. How to understand the response mechanism of ion-selective electrodes. Talanta 1997, 44, 1505–1508. [Google Scholar]Cheng, K.L. Explanation of misleading Nernst slope by Boltzmann equation. Microchem. J. 1998, 59, 457–461. [Google Scholar]Cheng, K. L. Comments on chemical publications. Paper presented in the 38th ACS Midwest Regional Meeting, University of Missouri-Columbia, November 2003. © 2004 by MDPI ( http://www.mdpi.org). Reproduction is permitted for noncommercial purposes. Share and Cite MDPI and ACS Style Cheng, K.L. Comments on “E. Pungor, The New Theory of Ion Selective Electrodes. Sensors 2001, 1, 1-12”. Sensors 2004, 4, 14-15. https://doi.org/10.3390/s40100014 AMA Style Cheng KL. Comments on “E. Pungor, The New Theory of Ion Selective Electrodes. Sensors 2001, 1, 1-12”. Sensors. 2004; 4(1):14-15. https://doi.org/10.3390/s40100014 Chicago/Turabian Style Cheng, K. L. 2004. "Comments on “E. Pungor, The New Theory of Ion Selective Electrodes. Sensors 2001, 1, 1-12”" Sensors 4, no. 1: 14-15. https://doi.org/10.3390/s40100014 Find Other Styles Article Metrics No No Article Access Statistics For more information on the journal statistics, click here. Multiple requests from the same IP address are counted as one view.