Abstract
Low concentrations of SO2 in air were measured using a Stark modulated microwave spectrometer. Measurement of the intensity of absorption lines for rotational transitions gives a quantitative measure of the concentration of specific small molecules. Concentrations of 20 ppm of SO2 in air were easily detected with a signal-to-noise ratio of over 20/1 with a 5 sec time constant using a straightforward sample concentration technique.
Original language | English (US) |
---|---|
Pages (from-to) | 691-697 |
Number of pages | 7 |
Journal | Analytical Letters |
Volume | 6 |
Issue number | 8 |
DOIs | |
State | Published - Aug 1 1973 |
Keywords
- microwave spectroscopy
- pollution
- sulphur dioxide
ASJC Scopus subject areas
- Analytical Chemistry
- Biochemistry
- Spectroscopy
- Clinical Biochemistry
- Biochemistry, medical
- Electrochemistry