Method for determining total volatile organic compounds in disposable mask

The invention discloses a method for determining total volatile organic compounds in disposable masks, which comprises the following steps: step 1, preparing a mixed standard solution of n-undecane and n-tridecane; step 2, setting gas chromatography conditions and mass spectrometry conditions, detecting the standard solution of n-undecane and n-tridecane, and drawing a standard curve; step 3, preparing the sample into a preset size, heating and balancing by using an automatic headspace sampler, injecting air at the upper part of a headspace bottle into a gas chromatography-mass spectrometer for separation after the balance is achieved, and performing separation and quantitative detection under the gas chromatography condition and the mass spectrum condition in the step 2 to obtain a chromatogram; and step 4, dividing the obtained chromatogram into two sections according to retention time, respectively substituting the sum of the peak areas of the section A and the section B into corresponding regression equat