Research Article
Rapid Identification of Atmospheric Gaseous Pollutants Using Fourier-Transform Infrared Spectroscopy Combined with Independent Component Analysis
Table 1
Infrared absorption characteristics of the four gases.
| | Name | Formula | CAS no. | Absorption band (cm−1) | Absorption peak (cm−1) | Absorption band (cm−1) | Absorption peak (cm−1) |
| | Acetylene | C2H2 | 74-86-2 | 705–760 | 729.342 | — | — | | Ethylene | C2H4 | 74-85-1 | 860–1040 | 949.533 | — | — | | Ethanol | C2H5OH | 115-10-6 | 1050–1240 | 1065.243 | 2760–3040 | 2990.539 | | Methane | CH4 | 74-82-8 | 1190–1400 | 1306.492 | 2870–3200 | 3017.271 |
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