Abstract
It is shown that with a formal linear dependence of absorbance on concentration А = f(C) and coefficient of correlation r ≈ 0.99 or more for weak electrolytes, a strong deviation from the Bouguer–Lambert–Beer law of experimentally determined coefficient of molar absorption εobs can be detected, depending on the concentration of electrolyte solution. Experimental and calculated data illustrating the reasons for the variability of coefficient of molar absorption εobs ≠ const in the solutions with concentrations of less than 10−3 mol/L. It is shown that when making precision spectrophotometric measurements, dependence εobs = f(C) is more informative than A = f(C). A theoretical model that reliably describes dependences εobs = f(C) for electrolytes of different strengths is proposed for the first time. The model will allow study and analysis equilibria in electrolyte solutions using the new technology of concentration spectrophotometry.
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1134%2FS0036024424020237/MediaObjects/11504_2024_5463_Fig1_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1134%2FS0036024424020237/MediaObjects/11504_2024_5463_Fig2_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1134%2FS0036024424020237/MediaObjects/11504_2024_5463_Fig3_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1134%2FS0036024424020237/MediaObjects/11504_2024_5463_Fig4_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1134%2FS0036024424020237/MediaObjects/11504_2024_5463_Fig5_HTML.png)
Similar content being viewed by others
REFERENCES
Th. G. Mayerhöfer, S. Pahlow, and J. Popp, ChemPhysChem. 21, 2029 (2020). https://doi.org/10.1002/cphc.202000464
Th. G. Mayerhöfer, A. V. Pipa, and Dr. J. Popp, ChemPhysChem. 20, 2748 (2019). https://doi.org/10.1002/cphc.201900787
H.-H. Perkampus, in UV-VIS Spectroscopy and Its Applications, Springer Lab Manuals (Springer, Berlin, 1992), p. 26. https://doi.org/10.1007/978-3-642-77477-5_4
R. Delgado, R. Soc. Chem. 9, 1 (2022). https://doi.org/10.1098/rsos.211103
Huang Gang, He Junxi, Zhang Xia, et al., Constr. Build. Mater. 273, 1 (2021). https://doi.org/10.1016/j.conbuildmat.2020.121582
M. A. Proskurnin, V. R. Khabibullin, L. O. Usoltseva, et al., Phys. Usp. 65, 270 (2022). https://doi.org/10.3367/UFNe.2021.05.038976
F. R. Hartley, C. Burgess, and R. Alcock, Solution Equilibria (Horwood, Chichester, 1980), p. 361.
https://www.shimadzu.ru/sites/shimadzu.seg/files/ SMO/brochures/UV-2600i-2700i-Brochure-C101-E169-RUS-10.21.pdf
M. Mamouei, K. Budidha, N. Baishya, et al., Sci. Rep. 11, 13734 (2021). https://doi.org/10.1038/s41598-021-92850-4
A. Yu. Tolbin, V. E. Pushkarev, L. G. Tomilova, and N. S. Zefirov, Phys. Chem. Chem. Phys. 19, 12953 (2017). https://doi.org/10.1039/C7CP01514C
D. D. Perrin and B. Dempsey, Buffers for pH and Metal Ion Control (Wiley, New York, 1974). https://doi.org/10.1007/978-94-009-5874-6
I. M. Mutton, Chromatographia 47, 234 (1998). https://doi.org/10.1007/BF02466588
C. T. Veldkamp, C. A. Koplinski, et al., Methods Enzymol. 570, 539 (2016). https://doi.org/10.1016/bs.mie.2015.09.031
J. H. Berkhout and H. N. Ram Aswatha, Indian J. Pharm. Educ. Res. 53, 475 (2019). https://doi.org/10.5530/ijper.53.4s.141
D. Dohoda, K. Tsinman, O. Tsinman, et al., J. Pharm. Biomed. Anal. 114, 88 (2015). https://doi.org/10.1016/j.jpba.2015.05.009
S. Babić, A. J. M. Horvat, D. M. Pavlović, and M. Kaštelan-Macan, Trends Anal. Chem. 26, 1043 (2007). https://doi.org/10.1016/j.trac.2007.09.004
S. S. Lysova, T. A. Skripnikova, and Yu. E. Zevatskii, Russ. J. Phys. Chem. A 91, 2362 (2017). https://doi.org/10.1134/S0036024417110139
S. S. Lysova, T. A. Skripnikova, and Yu. E. Zevatskii, Russ. J. Phys. Chem. A 92, 922 (2018). https://doi.org/10.1134/S0036024418050229
T. A. Skripnikova, S. S. Lysova, and Yu. E. Zevatskii, J. Chem. Eng. Data 62, 2400 (2017). https://doi.org/10.1021/acs.jced.7b00308
T. A. Skripnikova, S. S. Lysova, Yu. E. Zevatskii, et al., J. Mol. Struct. 1154 (15), 59 (2018). https://doi.org/10.1016/j.molstruc.2017.10.004
A. V. Selitrenikov and Yu. E. Zevatskiy, Russ. J. Gen. Chem. 85, 7 (2015). https://doi.org/10.1134/S1070363215010028
Yu. E. Zevatskiy and A. V. Selitrenikov, Russ. J. Gen. Chem. 83, 884 (2013). https://doi.org/10.1134/S1070363213050022
Funding
This work was supported by ongoing institutional funding. No additional grants to carry out or direct this particular research were obtained.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
The authors declare that they have no conflict of interest.
Additional information
Translated by Sh. Galyaltdinov
Publisher’s Note.
Pleiades Publishing remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Zevatskii, Y.E., Lysova, S.S., Skripnikova, T.A. et al. Bouguer–Lambert–Beer Law of Absorption: Spectrophotometry in Electrolyte Solutions. Russ. J. Phys. Chem. (2024). https://doi.org/10.1134/S0036024424020237
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1134/S0036024424020237