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See Chinese contents: GB/T 40111-2021 GB/T 40111-2021: Standard test method for fluorine, chlorine and sulfur in petroleum products - Combustion-ion chromatography
This Standard specifies the test method that uses combustion-ion chromatography to determine fluorine, chlorine and sulfur content in petroleum products, interference, instruments and equipment, reagents and materials, sampling, preparation, calibration, test procedures, calculation of results, expression of results, as well as precision and deviation. This Standard is applicable to the determination of fluorine, chlorine and sulfur content in petroleum products of which the boiling point range is 30~380 degree-Celcius and the determination range is 0.30mg/kg~15.00mg/kg, including gasoline, ethanol gasoline, naphtha, distillate, jet fuel, diesel, biodiesel blended fuel. This method can be also used for the samples outside this range, but the precision has not been determined.
