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Development of express method of microgravimetric determination of actual resins in petrols

https://doi.org/10.20914/2310-1202-2017-3-136-142

Abstract

A new approach is proposed for a quick, simple assessment of one of the quality indicators of gasoline - the concentration of actual pitches. Separate standard quality indicators for the gasoline samples (with octane number 92), which are associated with the content of the components of petroleum fractions and other non-volatile compounds, were measured. The method of piezoquartz micro-weighting with one-sided loading of the resonant electrode of the resonator, sensitive on mass (OAB-type) with a limiting contour, is used. The correlation between the results obtained by piezoquartz micro-weighing and by the standard method was studied. Critical points of the developed method are determined - the stage of applying the exact volume of samples to the resonator electrode with a micro syringe. The method of molecular absorption spectroscopy in the middle UV region relative to hexane revealed differences in the composition of the components of the petroleum fraction of gasoline samples. The principle of comparing "fingerprints" is used to compare and establish the degree of identity of spectra and composition for gasoline samples from several characteristic points on the spectra. To find and evaluate the tightness of the connection between the results of different methods, a nonparametric method for small samples with the Spearman rank correlation was used. It is established that the values of the Spearman's correlation coefficients for the piezoquartz microweighting and the peak optical density present in all gasoline samples at the characteristic wavelength have a direct and strong tightness of the connection. The dependence of the signs is statistically significant, there is a close linear relationship between the parameters. The possibility of applying the piezoquartz micro-weighting method to develop an express method for estimating the non-volatile residue of gasoline was positively evaluated.

About the Authors

T. A. Kuchmenko
Voronezh state university of engineering technologies
doctor of chemical sciences, professor, head of department, physical and analytical chemistry department, Revolution Av., 19 Voronezh, 394036, Russia


I. A. Griboedova
Voronezh state university of engineering technologies
student, physical and analytical chemistry department, Revolution Av., 19 Voronezh, 394036, Russia


D. A. Poryadina
Military Academy of the strategic missile forcesnamed after Peter the Great
candidate of chemical sciences, lecturer of the department, Brigadnaya st., 17, Serpukhov, 142210, Russia


References

1. TR TS 013/2011. O trebovaniyakh k avtomobil'nomu i aviatsionnomu benzinu, dizel'nomu i sudovomu toplivu, toplivu dlya reaktivnykh dvigateley i mazutu [Technical regulations of the Customs Union 013/2011. On the requirements for automobile and aviation gasoline, diesel and marine fuel, jet fuel and fuel oil.]. Moscow, 2011. (in Russian)

2. Gureev A.A. Avtomobil'nye benziny. Svoystva i primenenie [Automobile gasolines. Properties and application.]. 1996. (in Russian)

3. GOST 1567–97 (ISO 6246–95). Nefteprodukty. Benziny avtomobil'nye i topliva aviatsionnye. Metod opredeleniya smol vyparivaniem struey [State Standard 1567–97 (International organization for standardization 6246–95). Petroleum products. Automobile gasoline and aviation fuel. Method for the determination of tar by evaporation by a jet]. Moscow, Standartinform Publ, 1999. (in Russian)

4. GOST 8489–58. Toplivo motornoe. Metod opredeleniya fakticheskikh smol (po Budarovu). [State Standard 8489–58. Fuel motor. Method for determining actual pitches (according to Budarov)]. Moscow, Standartinform Publ, 2001. (in Russian)

5. Kuchmenko T.A Khimicheskie sensory na osnove p'yezokvartsevykh mikrovesov . Problemy analiticheskoy khimii. [Problems of Analytical Chemistry]. 2011. vol. 14. 127–203 p. (in Russian)

6. Ul'trafioletovaya i infrokrasnaya spektroskopiya neftyanykh fraktsiy [Ultraviolet and infrared spectroscopy of petroleum fractions]. Available at: http://studopedia.su/15_6293_bumazhnaya-hromatografiya-smolistih-veshchestv-i-asfaltenov.html.

7. Koeffitsient rangovoy korrelyatsii Spirmena [Coefficient of rank correlation of Spearman]. Available at: http://edu.alnam.ru/book_mkor.php? id=41

8. Zadachi optimizatsii [Optimization tasks] Available at: http://www.uchimatchast.ru/teory/spirman_primer.php

9. Opredelenie fraktsionnogo sostava topliva  [Determination of fractional composition of fuel]. Available at: http://studopedia.su/14_73816_opredelenie-fraktsionnogo-sostava-benzinov.html.

10. O benzine [About gasoline]. Available at: http://www.aviajournal.com/arhiv/2004/05/02.html


Review

For citations:


Kuchmenko T.A., Griboedova I.A., Poryadina D.A. Development of express method of microgravimetric determination of actual resins in petrols. Proceedings of the Voronezh State University of Engineering Technologies. 2017;79(3):136-142. (In Russ.) https://doi.org/10.20914/2310-1202-2017-3-136-142

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ISSN 2226-910X (Print)
ISSN 2310-1202 (Online)