Method for detecting p-chlorobenzoyl chloride related substances by gas chromatography

The invention relates to the technical field of chemical detection, in particular to a method for detecting related substances of p-chlorobenzoyl chloride by a gas chromatographic method, an instrument is a gas chromatograph, a detector is an FID (Flame Ionization Detector), a chromatographic column is an MEGA-1 quartz capillary chromatographic column, carrier gas is N2, the flow rate is 2.0 mL/min, the split ratio is 20: 1, and programmed heating: the initial temperature is 130 DEG C and is maintained for 15 minutes; raising the temperature to 200 DEG C at the speed of 15 DEG C per minute, and maintaining the temperature for 5 minutes; a sample injection mode is as follows: direct sample injection is performed, the temperature of a sample injection port is 260 DEG C, and the temperature of a detector is 280 DEG C; according to the method, the sample introduction volume is 0.2 microliter, related substances in p-chlorobenzoyl chloride are effectively separated, the content of the related substances can be qua