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Inflection Points on Some S-Shaped Curves

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DOI: 10.4236/jasmi.2014.41004    3,670 Downloads   5,573 Views   Citations

ABSTRACT

This paper refers to inflection point—the fundamental property of S-shaped curves. In this paper, the inflection points are related to pH titration curve pH = pH(V), and to the curve s = s(pH) involved with surface tension, s.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Michałowska-Kaczmarczyk, A. , Michałowski, T. and Asuero, A. (2014) Inflection Points on Some S-Shaped Curves. Journal of Analytical Sciences, Methods and Instrumentation, 4, 27-30. doi: 10.4236/jasmi.2014.41004.

References

[1] Sigmoid Function. http://en.wikipedia.org/wiki/Sigmoid_function
[2] Greschonig, H. and Glatter, O. (1986) Determination of Equivalence Points of Sigmoidal Potentiometric Titration Curves. Microchimica Acta, 89, 401-409. http://link.springer.com/article/10.1007%2FBF01207332
[3] Asuero, A.G. and Michaowski, T. (2011) Comprehensive Formulation of Titration Curves for Complex Acid-Base Systems and Its Analytical Implications. Critical Reviews in Analytical Chemistry, 41, 151-187.
[4] Michalowski, T. (1981) Some Remarks on Acid-Base Titration Curves. Chemia Analityczna, 26, 799-813.
[5] Michalowski, T. and Stepak, R. (1985) Evaluation of the Equivalence Point in Potentiometric Titrations with Application to Traces of Chloride. Analytica Chimica Acta, 172, 207-214. http://dx.doi.org/10.1016/S0003-2670(00)82608-2
[6] von Szyszkowski, B. (1908) Experimentelle Studien über kapillare Eigenschaften der wasserigen Losungen von Fettsauren. (Experimental studies of the capillary properties of aqueous solutions of fatty acids), Zeitschrift für Physikalische Chemie, 64, 385-414.

  
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