Method for detecting content and migration volume of 9-octadecenoic acid amide and 13-docosamide in polyvinylidene chloride casing film

The invention provides a method for detecting the content and migration volume of 9-octadecenoic acid amide and 13-docosamide in a polyvinylidene chloride casing film, and belongs to the technical field of food packaging plastic material detection, the chromatographic conditions are as follows: a chromatographic column is Agilent HP-5MS, Agilent HP-5MS UI or Agilent DB-5MS, carrier gas is helium, the carrier gas flow rate is 0.8-2.0 mL/min, no split-flow sample introduction is performed, the sample introduction volume is 1-5 [mu] L, the temperature of a sample introduction port is 240-320 DEG C, the detection time is 1-2 hours, the detection time is 1-2 hours, the detection time is 1-2 hours, the detection time is 1-2 hours, the detection time is 1-2 hours, the detection time is 1-2 hours, and the detection the temperature of the chromatographic column is 80-320 DEG C, temperature programming is carried out, and the heating rate is 5-30 DEG C/min; mass spectrum conditions are as follows: an ion source is an e