Fuels
Fatty acids
Diesel fuels
Gasoline
Fuel oil
X-ray fluorescence spectrometry
Sulfur
Petroleum
Esters (carboxylic)
Wavelengths
Automotive fuels
Liquid fuels
Dispersion (waves)
Chemical analysis and testing
Fluorimetry
Determination of content
Methyl compounds
Petroleum products
Spectroscopy
Oxygen