Abstract
For long-flame coal, the content of the basic elements in the organic mass (carbon, hydrogen, nitrogen, sulfur, and oxygen) is determined. Standard chemical methods are employed: accelerated determination of carbon and hydrogen; the Kjeldahl method for nitrogen; and the Eschka method for total sulfur. Their content is also determined by an instrumental method. The results are subjected to statistical analysis; the data from chemical and instrumental analysis are compared. For all the elements, the discrepancy is insignificant; the dispersion is uniform; and the results obtained by the methods may be regarded as equally accurate. On that basis, chemical coal analysis may be replaced by instrumental analysis, with considerable savings of time.
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REFERENCES
GOST (State Standard) 2408.1-95 (ISO 625-96): Solid Fuel. Methods for Determination of Carbon and Hydrogen, Moscow: Izd. Standartov, 1997.
GOST (State Standard) 33503-2015 (ISO 11722:2013, ISO 5068-2:2007): Solid Mineral Fuel. Methods for Determination of Moisture in the Analysis Sample, Moscow: Standartinform, 2017.
GOST (State Standard) R 55661-2013: Solid Mineral Fuel. Determination of Ash, Moscow: Standartinform, 2014.
GOST (State Standard) R 55660-2013: Solid Mineral Fuel. Determination of Volatile Matter, Moscow: Standartinform, 2015.
GOST (State Standard) R 55659-2013 (ISO 7404-5: 2009): Methods for the Petrographic Analysis of Coals. Part 5: Method of Determining Microscopically the Reflectance of Vitrinite, Moscow: Standartinform, 2015.
GOST (State Standard) 28743-93 (ISO 333-96): Solid Mineral Fuel. Methods for Determination of Nitrogen, Moscow: Standartinform, 1995.
GOST (State Standard) 8606-93 (ISO 334-92): Solid Mineral Fuels. Determination of Total Sulphur. Eschka Method, Moscow: Standartinform, 2000.
GOST (State Standard) 2408.3-95 (ISO 1994-76): Solid Fuel. Methods for Determination of Oxygen Content, Moscow: Izd. Standartov, 1997.
Charykov, A.K., Matematicheskaya obrabotka rezul’tatov khimicheskogo analiza: Uchebnoe posobie (Mathematical Processing of the Results of Chemical Analysis: Manual), Leningrad: Leningr. Gos. Univ., 1977.
GOST (State Standard) 27313-2015: Solid Mineral Fuel. Symbols of Quality Indicators and Calculation of Analyses to Different Bases, Moscow: Standartinform, 2017.
ACKNOWLEDGMENTS
This research was conducted on equipment at the Kemerovo Collective-Use Center, Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences.
Funding
State funding was provided to the Institute of Coal Chemistry and the Chemistry of Materials, Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences (project 121031500512-7).
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Translated by B. Gilbert
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Efimova, O.S., Panina, L.V. Determining the Composition of Long-Flame Coal by Chemical and Instrumental Methods: A Comparison. Coke Chem. 65, 7–10 (2022). https://doi.org/10.3103/S1068364X22010021
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DOI: https://doi.org/10.3103/S1068364X22010021