| abstract |
The application provides a method for determining the content of diphenylmethane-4,4'-diisocyanate in medical protective equipment, comprising the following steps: step 1, taking the medical protective equipment to be detected, and placing it in a reactor; step 2, Adding an organic solvent to the reactor, ultrasonicating for 20-60 minutes at 40 to 80° C., and cooling to room temperature to obtain an extract; step 3, using an organic membrane to filter the extract to obtain a sample extract; step 4, Pipette the sample extract into a sample bottle, enter the gas chromatography-mass spectrometer for detection, bring the detection result into the standard curve, and calculate the diphenylmethane-4,4 in the medical protective equipment to be detected '-diisocyanate content. The detection method provided by the present application is more specific than the existing analysis method, and the sensitivity is greatly improved. |