Gasoline benzene content detection

Benzene is a component with a higher octane number in catalytic reforming gasoline，For toxic substances, as well asIt is a recognized carcinogen. Although it contributes significantly to the octane rating of gasoline, it is released into the atmosphere due to incomplete evaporation and combustion, causing harm to human health. Therefore, it is environmentally friendlyRegarding human healthIt is necessary to consider limiting the benzene content in gasoline.GB 17930-2016Regulations on Automotive Gasoline, including Automotive Gasoline (IV, V)Benzene content（volume fraction）not greater than1%.

gasolineBenzene contentdetectionaccording toSH/T0713（Gas Chromatography）To conduct the measurement, the experimental method is summarized as follows: adding butanone as an internal standard to the sample, and then introducing it into a gas chromatograph with double columns in series. The sample is first passed through a chromatography column filled with a non-polar stationary phase such as methyl silicone, and the components are separated in boiling point order. After the octane flows out, the non-polar column is blown back to remove components with boiling points higher than octane. Octane and light components are subsequently loaded with a strongly polar stationary phase, such as1,2,3-Three（2-Cyanoethoxy propane or modified polyethylene glycol chromatography column is used to separate aromatic and non aromatic compounds. The components that flow out are detected using a thermal conductivity detector (or flame ionization detector) and recorded using a recorder. Measure the peak area and calculate the concentration of each component based on the internal standard.