Abstract
With some special adaptations the technique of matrix isolation followed by detection through electron paramagnetic resonance (EPR) can also be used for the measurement of atmospheric radical concentrations. A light weight cryogenic sampling device has been constructed. It uses condensation of atmospheric CO2 or H2O at 77 K for matrix formation and trapping of the radicals. The sampler has been flown on a balloon for stratospheric sampling. First data on stratospheric, HO2 and NO2 at 32 km altitude have been obtained on a flight on 8 August 1976 and will be reported.
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Mihelcic, D., Ehhalt, D.H., Kulessa, G.F. et al. Measurements of free radicals in the atmosphere by matrix isolation and electron paramagnetic resonance. PAGEOPH 116, 530–536 (1978). https://doi.org/10.1007/BF01636905
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DOI: https://doi.org/10.1007/BF01636905