Articles | Volume 12, issue 6
Atmos. Meas. Tech., 12, 3351–3363, 2019
https://doi.org/10.5194/amt-12-3351-2019
Atmos. Meas. Tech., 12, 3351–3363, 2019
https://doi.org/10.5194/amt-12-3351-2019

Research article 26 Jun 2019

Research article | 26 Jun 2019

A novel approach to calibrating a photoacoustic absorption spectrometer using polydisperse absorbing aerosol

Katie Foster et al.

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Short summary
A new technique for calibrating photo-acoustic absorption spectrometers (PASs) has been developed utilizing polydisperse, highly-absorbing aerosol and a commercially available instrument that measures particle extinction and scattering. This is the first calibration technique for multi-pass PAS instruments that does not require particles with known refractive index or reactive gases. Three substances were tested: Aquadag, Regal Black, and Nigrosin. All calibrations were consistent to within 5 %.