Ключевые слова:
Solid fuels, Specimen preparation, Volumetric analysis, Reproducibility, Fossil fuels, Determination of content, Precision, Sulfur organic compounds, Iron, Atomic absorption spectrophotometry, Sulfur inorganic compounds, Coke, Sulfur, Lignite, Chemical analysis and testing, Spectrochemical analysis, Gravimetric analysis, Fuels, Coal, Precipitation methods, Calibration, Testing conditions, Pyrites, Colorimetry, Coal products, Sulfates, Extraction methods of analysis, Test equipment, Equations