Abstract: The detection of stains component is an important basis for the scientific washing and disinfection of firefighting uniforms, at the same time, it' s also the main basis for carrying out secondary occupational exposure protection for firefighters. For this purpose, this study will use acetone, methanol, trichloromethane, n-hexane, and 2% nitric acid to extract and collect surface stains on firefighting suits. In addition, gas chromatography-mass spectrometry (GC-MS), liquid chromatography-tandem mass spectrometry (LC-MS/MS), and inductively coupled plasma mass spectrometry (ICP-MS) were used to detect organic compounds, perfluoroalkyl compounds (PFAS), and heavy metal elements in the extracted stained samples. The experimental results showed that a total of 59 organic compounds, 6 PFASs, and 17 heavy metals were detected.

Key words: fire protective clothing, stain, organic pollutants, PFAS, heavy metals