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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

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doi:10.5194/amt-2016-323
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
08 Nov 2016
Review status
A revision of this discussion paper was accepted for the journal Atmospheric Measurement Techniques (AMT) and is expected to appear here in due course.
Calibration of a photoacoustic spectrometer cell using light absorbing aerosols. A technical note
Nir Bluvshtein1, J. Michel Flores1, Quanfu He1, Enrico Segre2, Lior Segev1, Nina Hong3, Andrea Donohue3, James N. Hilfiker3, and Yinon Rudich1 1Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
2Physical services, Weizmann Institute of Science, Rehovot 76100, Israel
3J.A. Woollam Co., Inc., 645 M Street, Suite 102 Lincoln, NE 68508, USA
Abstract. Multi-pass photoacoustic spectrometer (PAS) is an important tool for the direct measurement of light absorption by atmospheric aerosol. And accurate PAS measurements require an accurate calibration of its signal. Ozone is often used for calibrating the PAS by relating the instrument signal to the absorption coefficient measured by an independent method such as cavity ring down spectroscopy (CRD), cavity enhanced spectroscopy (CES) or an ozone monitor. We report here a calibration method that uses measured absorption coefficients of aerosolized, light absorbing organic materials and offer an alternative approach to calibrate the PAS at 404 nm. To implement this method we first determined the complex refractive index of an organic dye using spectroscopic ellipsometry, and then we use this well characterized material as a standard material for PAS calibration.

Citation: Bluvshtein, N., Flores, J. M., He, Q., Segre, E., Segev, L., Hong, N., Donohue, A., Hilfiker, J. N., and Rudich, Y.: Calibration of a photoacoustic spectrometer cell using light absorbing aerosols. A technical note, Atmos. Meas. Tech. Discuss., doi:10.5194/amt-2016-323, in review, 2016.
Nir Bluvshtein et al.
Nir Bluvshtein et al.

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Multi-pass photoacoustic spectrometer (PAS) is an important tool for the direct measurement of light absorption by atmospheric aerosol. Accurate PAS measurements rely on accurate calibration signal. Ozone is often used for calibrating the PAS by relating the instrument signal to the absorption coefficient measured by an independent. We report a new calibration method that uses measured absorption coefficients of aerosolized, light absorbing organic materials.
Multi-pass photoacoustic spectrometer (PAS) is an important tool for the direct measurement of...
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