Method for detecting a variety of isocyanate compounds in cork

The invention provides a method for detecting a variety of isocyanate compounds in a cork. First, a cork is soaked in isooctane. The soak solution is concentrated to below 1ml in a 40 DEG C water bath rotary evaporation apparatus, and the volume of isooctane is fixed to 1mL. Analysis is made using a gas chromatography triple quadrupole mass spectrometry. An MRM acquisition mode is adopted. Quantification is performed by use of an external standard method. For analysis made using the gas chromatography triple quadrupole mass spectrometry, the chromatographic column used is a DB-17MS column, the temperature of the sample inlet is 240 DEG C, the initial column temperature is 40 DEG C, the column temperature is raised to 150 DEG C at the rate of 10 DEG C and then raised to 280 DEG C at the rate of 25 DEG C, the column is kept at the temperature 3 minutes, the sample quantity is 1.0mL, the flow rate of the column is 1.60mL/min, a pulse-splitless injection mode is used, and quantification is performed by use of an external standard method. Compared with the traditional detection method, the method improves the accuracy and precision of the detection result, and reduces the risk of misjudgment.