Abstract:

The method for the determination of trace sulfolane and thiophene in benzene by gas chromatography flame photometry is established. The chromatography conditions are optimized and the external standard method is adopted for quantitative method. The recovery rates of the method after adding titer range from 114% to 136%. Relative standard deviation is not greater than 7%. The determination of sulfolane and thiophene in benzene sample is characterized by high sensitivity, good reproducibility, high reliability and so on.