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Atmospheric Chemistry

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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. 

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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

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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.

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Additional Instruments:

CAPS NO2 detectors

Teledyne 200U NO/NOX chemiluminescence analyzer

Licor 850 CO2/H2O IR spectrometer

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