GC-FID/MS-based method for detecting pollution features of VOCs in indoor air

The invention belongs to the technical field of gas detection, and discloses a GC-FID/MS-based method for detecting pollution features of VOCs in indoor air. According to the method, a Summa canisteris adopted for sampling and a GC-FID/MS coupling technique is adopted for analyzing components and concentrations of VOCs in indoor air; and a TH-3000BIV environmental air sampler is adopted for sapling and an acetylacetone spectrophotometric method is adopted for analyzing the content of formaldehyde in the indoor air. According to the method, the adopted GC-FID/MS coupling technique is capable of detecting more than 100 kinds of various VOCs via once sampling; compared with existing detection method, the method disclosed by the invention has the advantages that the data integrity and chromatographic resolution are remarkably improved ad the analysis is more comprehensive and correct; known from indoor pollution conditions, the concentrations of VOCs in indoor environments are gradually reduced along with the inc