2.2. Data processing
After finishing the tests to the five samples, the total ion chromatogram can be extracted from the database. The materials produced by combustion of pure carpet act as interference, the total ion chromatograms of samples from 2 to 5 are respectively compared with that of the pure carpet sample combustion smoke. Through spectra overlapping interference components can be eliminate and the respective characteristic peaks can be found out.
The overlapping chromatogram spectra of Sample 1 and Sample 2 is showed as Figure. 1.