Objective To determine the content of phosphoric ester flame retardants in samples and provide a scientific basis for optimizing the flame retardancy of plastic products. Methods The phosphoric ester flame retardants were extracted from plastic samples with suitable solvent, and the content of phosphoric ester flame retardants was determined by GC-MS. Results The method is fine and can effectively remove impurity interference, can effectively remove the interference of impurities, has a good linearity with a correlation coefficient of more than 0.995; has a good precision with a relative standard deviation of less than 10%; a spiked recovery test was carried out throughout the process, and the recovery rate was 80%~120%. Conclusion This method is accurate and reliable, and can be used for the determination of the content of phosphate ester flame retardants in samples.

ultrasonic extraction  /  gas chromatography-mass spectrometry  /  phosphate flame retardant