OPTICAL PROPERTIES OF CARBAMIDE AQUEOUS SOLUTIONS
Subject of Research. The paper presents the results of measurements of refractometric properties (refractive index n, its temperature factor dn/dt) and the ultraviolet spectral absorption in carbonic acid diamide aqueous solutions (carbamide) depending on solid residue mass fraction md = 0-50 % and...
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Saint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University)
2016
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Online Access: | https://doi.org/10.17586/2226-1494-2016-16-2-271-276 https://doaj.org/article/595f76d1becb4ad5a757d2470e6265d3 |
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ftdoajarticles:oai:doaj.org/article:595f76d1becb4ad5a757d2470e6265d3 2023-05-15T15:52:30+02:00 OPTICAL PROPERTIES OF CARBAMIDE AQUEOUS SOLUTIONS E. V. Avramenko N. P. Belov P. V. Odnovorchenko A. S. Sherstobitova A. D. Yaskov 2016-03-01T00:00:00Z https://doi.org/10.17586/2226-1494-2016-16-2-271-276 https://doaj.org/article/595f76d1becb4ad5a757d2470e6265d3 EN RU eng rus Saint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University) http://ntv.ifmo.ru/file/article/15178.pdf https://doaj.org/toc/2226-1494 https://doaj.org/toc/2500-0373 doi:10.17586/2226-1494-2016-16-2-271-276 2226-1494 2500-0373 https://doaj.org/article/595f76d1becb4ad5a757d2470e6265d3 Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki, Vol 16, Iss 2, Pp 271-276 (2016) carbamide refractive index refractive index temperature factor fundamental electronic absorption industrial refractometry Optics. Light QC350-467 Electronic computers. Computer science QA75.5-76.95 article 2016 ftdoajarticles https://doi.org/10.17586/2226-1494-2016-16-2-271-276 2022-12-30T21:56:10Z Subject of Research. The paper presents the results of measurements of refractometric properties (refractive index n, its temperature factor dn/dt) and the ultraviolet spectral absorption in carbonic acid diamide aqueous solutions (carbamide) depending on solid residue mass fraction md = 0-50 % and on temperaturet = 10-70 °C.Method of Research. Laboratory methods ofliquid-phase medium refractometry and ultraviolet spectrophotometry were applied for the research. We carried out computational modeling of electronic states spectrum for the carbonic acid diamide molecule and theoretical calculation of the fundamental electronic absorption of the molecule in the ultraviolet wavelenght region.Main Results. We have established that the solution concentration md has a nonlinear character and may be represented by the quadratic polynomial with the error Δn= ± 0,0005. We have shown the refractive indexdependence on temperature n(t) changes in linear fashion att = 10-70 °C.At that, the inclination of lines n(t) increases at the increase of md; so, the temperature factor dn/dt may be approximated by the quadratic polynomial. Transmission spectra of solutions in the spectral region λ= 225-760 nm have no special features except for the sharp edge in the short-wavelength region; the fundamental electronic absorptionis responsible for it. We have established that dispersion dependences of the refraction index n(λ;md) in aqueous solutions of carbamide at λ= 360-760 nm and at md = 0-50 % may be calculated with the satisfactory error without additional adjustable parameters from the ultraviolet absorption data in terms of the one-dimentional oscillator Lorentz model.PracticalRelevance. Representedmeasurements of carbonic acid diamide aqueous solutions optical properties may be applied for the adjustment and calibration of commercial refractometers at processing lines of the AdBlue reagent manufacture for the selective catalytic reduction (SCR) of motor transport exhaust gases. Article in Journal/Newspaper Carbonic acid Directory of Open Access Journals: DOAJ Articles Scientific and Technical Journal of Information Technologies, Mechanics and Optics 271 276 |
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topic |
carbamide refractive index refractive index temperature factor fundamental electronic absorption industrial refractometry Optics. Light QC350-467 Electronic computers. Computer science QA75.5-76.95 |
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carbamide refractive index refractive index temperature factor fundamental electronic absorption industrial refractometry Optics. Light QC350-467 Electronic computers. Computer science QA75.5-76.95 E. V. Avramenko N. P. Belov P. V. Odnovorchenko A. S. Sherstobitova A. D. Yaskov OPTICAL PROPERTIES OF CARBAMIDE AQUEOUS SOLUTIONS |
topic_facet |
carbamide refractive index refractive index temperature factor fundamental electronic absorption industrial refractometry Optics. Light QC350-467 Electronic computers. Computer science QA75.5-76.95 |
description |
Subject of Research. The paper presents the results of measurements of refractometric properties (refractive index n, its temperature factor dn/dt) and the ultraviolet spectral absorption in carbonic acid diamide aqueous solutions (carbamide) depending on solid residue mass fraction md = 0-50 % and on temperaturet = 10-70 °C.Method of Research. Laboratory methods ofliquid-phase medium refractometry and ultraviolet spectrophotometry were applied for the research. We carried out computational modeling of electronic states spectrum for the carbonic acid diamide molecule and theoretical calculation of the fundamental electronic absorption of the molecule in the ultraviolet wavelenght region.Main Results. We have established that the solution concentration md has a nonlinear character and may be represented by the quadratic polynomial with the error Δn= ± 0,0005. We have shown the refractive indexdependence on temperature n(t) changes in linear fashion att = 10-70 °C.At that, the inclination of lines n(t) increases at the increase of md; so, the temperature factor dn/dt may be approximated by the quadratic polynomial. Transmission spectra of solutions in the spectral region λ= 225-760 nm have no special features except for the sharp edge in the short-wavelength region; the fundamental electronic absorptionis responsible for it. We have established that dispersion dependences of the refraction index n(λ;md) in aqueous solutions of carbamide at λ= 360-760 nm and at md = 0-50 % may be calculated with the satisfactory error without additional adjustable parameters from the ultraviolet absorption data in terms of the one-dimentional oscillator Lorentz model.PracticalRelevance. Representedmeasurements of carbonic acid diamide aqueous solutions optical properties may be applied for the adjustment and calibration of commercial refractometers at processing lines of the AdBlue reagent manufacture for the selective catalytic reduction (SCR) of motor transport exhaust gases. |
format |
Article in Journal/Newspaper |
author |
E. V. Avramenko N. P. Belov P. V. Odnovorchenko A. S. Sherstobitova A. D. Yaskov |
author_facet |
E. V. Avramenko N. P. Belov P. V. Odnovorchenko A. S. Sherstobitova A. D. Yaskov |
author_sort |
E. V. Avramenko |
title |
OPTICAL PROPERTIES OF CARBAMIDE AQUEOUS SOLUTIONS |
title_short |
OPTICAL PROPERTIES OF CARBAMIDE AQUEOUS SOLUTIONS |
title_full |
OPTICAL PROPERTIES OF CARBAMIDE AQUEOUS SOLUTIONS |
title_fullStr |
OPTICAL PROPERTIES OF CARBAMIDE AQUEOUS SOLUTIONS |
title_full_unstemmed |
OPTICAL PROPERTIES OF CARBAMIDE AQUEOUS SOLUTIONS |
title_sort |
optical properties of carbamide aqueous solutions |
publisher |
Saint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University) |
publishDate |
2016 |
url |
https://doi.org/10.17586/2226-1494-2016-16-2-271-276 https://doaj.org/article/595f76d1becb4ad5a757d2470e6265d3 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki, Vol 16, Iss 2, Pp 271-276 (2016) |
op_relation |
http://ntv.ifmo.ru/file/article/15178.pdf https://doaj.org/toc/2226-1494 https://doaj.org/toc/2500-0373 doi:10.17586/2226-1494-2016-16-2-271-276 2226-1494 2500-0373 https://doaj.org/article/595f76d1becb4ad5a757d2470e6265d3 |
op_doi |
https://doi.org/10.17586/2226-1494-2016-16-2-271-276 |
container_title |
Scientific and Technical Journal of Information Technologies, Mechanics and Optics |
container_start_page |
271 |
op_container_end_page |
276 |
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1766387662145454080 |