Aerosol Research
Aerosol Research
Aerosol Research
Articles | Volume 4, issue 1
Articles | Volume 4, issue 1
https://doi.org/10.5194/ar-4-103-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ar-4-103-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 4, issue 1
Research article
 | 
25 Feb 2026
Research article |  | 25 Feb 2026

Development of the SiMPLE-PAS: a low-cost, three-wavelength photoacoustic spectrometer for aerosol absorption

Ashley M. Scott, Charles A. Wise, Ryan P. Poland, Anna D. Jordan, and D. Al Fischer

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Short summary
The SiMPLE-PAS is a single-pass, multi-wavelength, portable, and low-expense photoacoustic spectrometer designed to measure absorption of light by atmospheric aerosols. It is differentiated from other PAS instruments by being much less expensive (approximately USD 500 total) and 3D-printed while still allowing measurements at multiple wavelengths. The instrument has competitive detection limits and provides a blueprint for an ultra low-cost PAS to make the technique more accessible.
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