FILTER-FREE LIGHT ABSORPTION MEASUREMENT OF VOLCANIC ASHES AND AMBIENT PARTICULATE MATTER USING MULTI-WAVELENGTH PHOTOACOUSTIC SPECTROSCOPY | Zendy

Gaoxuan Wang | Zendy; Pierre Kulinski | Zendy; Patrice Hubert | Zendy; Alexandre Deguine | Zendy; Denis Petitprez | Zendy; Suzanne Crumeyrolle | Zendy; Éric Fertein | Zendy; Karine Deboudt | Zendy; Pascal Flament | Zendy; Markus W. Sigrist | Zendy; Hongming Yi | Zendy; Wei Dong Chen | Zendy

Open Access

FILTER-FREE LIGHT ABSORPTION MEASUREMENT OF VOLCANIC ASHES AND AMBIENT PARTICULATE MATTER USING MULTI-WAVELENGTH PHOTOACOUSTIC SPECTROSCOPY

Author(s) -

Gaoxuan Wang,

Pierre Kulinski,

Patrice Hubert,

Alexandre Deguine,

Denis Petitprez,

Suzanne Crumeyrolle,

Éric Fertein,

Karine Deboudt,

Pascal Flament,

Markus W. Sigrist,

Hongming Yi,

Wei Dong Chen

Publication year - 2019

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier19100603

Subject(s) - particulates , photoacoustic spectroscopy , materials science , wavelength , spectroscopy , absorption (acoustics) , photoacoustic imaging in biomedicine , absorption spectroscopy , optoelectronics , optics , chemistry , physics , composite material , quantum mechanics , organic chemistry

Accurate measurement of atmospheric particulate matter (PM) absorption coefficient is highly required for study of earth climate change and for monitoring of air quality. In addition, multiwavelength measurements of PM absorption can provide information on the PM chemical composition (black carbon or brown carbon). A multi-wavelengths photoacoustic (MW-PA) spectrophone operating at 444, 532 and 660 nm was developed and deployed for filter-free characterization of wavelengthdependent optical properties of PM mass absorption coefficient (MAC) and absorption Ångström coefficient (AAC). It is worth noting that to date no any AAC of volcanic ashes determined by filter-free measurement have been reported. The developed MW-PA spectrophone was deployed to an intensive field campaign measurement of environmental PM in Grenoble (France). Side-by-side inter-comparison measurements of ambient PM showed a good correlation between the developed MW-PA spectrophone and a reference instrument aethalometer (Magee scientific, AE33).

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