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Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes
Published on: May 26, 2014
A New Photoacoustic Soot Spectrophone for Filter-Free Measurements of Black Carbon at 880 nm
Goufrane Abichou1,2, Soulemane H Ngagine1, Tong N Ba1
1Laboratoire de Physicochimie de l'Atmosphère, Université du Littoral Côte d'Opale, 189A Avenue Maurice Schumann, 59140 Dunkerque, France.
Abstract:
A new photoacoustic soot spectrometer (PASS) operating at 880 nm was developed, for the first time, for filter-free measurements of black carbon (BC). The performance of the developed PASS was characterized and evaluated using a reference aethalometer AE51 on incense smoke in the air. An excellent correlation on the measurement of incense smoke was found between the two instruments in comparison with a regression coefficient of 0.99. A 1 σ detection limit of 0.8 µg m-3 was achieved for BC measurement at a time resolution of 1 s. It can be further reduced to 0.1 µg m-3, using a longer integration time of 1 min.
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