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Atmospheric Chemistry

Dr. Ezra Wood

Ethane CHemical AMPlifier (ECHAMP)

Our ECHAMP sensor quantifies total peroxy radicals ([HO2] + Σ[RO2]) and Ox ([O3] + [NO2]). We have recently deployed it for studies of ozone formation and radical chemistry in cities, forests, and forest fires. 

More info:

E. Wood, B. Deming, and S. Kundu, "Ethane-Based Chemical Amplification Measurement Technique for Atmospheric Peroxy Radicals", Environ. Sci. Technol. Lett., 2017, 4 (1), pp 15–19

https://pubs.acs.org/doi/10.1021/acs.estlett.6b00438

Chemical Ionization Mass Spectrometer (CIMS)

We have used our Aerodyne/TOFWERK high-resolution ToF-CIMS with iodide, bromide, and oxygen anion as reagent ions. We have used it for field measurements of organic and inorganic acid vapors, and numerous other constituents of wildfire smoke.

Additional Instruments:

CAPS NO2 detectors

Teledyne 200U NO/NOX chemiluminescence analyzer

Licor 850 CO2/H2O IR spectrometer

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