Benzene is an important basis for organic chemical raw materials, mainly used in the production of synthetic resins, synthetic rubber, synthetic fibers, synthetic detergents, dyes, organic pigments, pharmaceuticals, spices and pesticides, can also be used as heat carriers and solvents. China's benzene is mainly derived from the oil refining in the platinum reforming and coal coking by-products, in 2006, the domestic benzene production capacity of 4.2Mt / a, pure benzene production enterprises more than 50, of which coking benzene
The specification of HH-SF-III thiophene column (specifications: 5m * 3mm) has been developed to determine the amount of thiophene in benzene by gas chromatography. The method is quantitatively determined by external standard method. The results showed that the linear correlation coefficient was 0.9999, the detection limit was 1 mg / L, the recovery rate was 98.4 ~ 100.7%, and the precision was high.
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