Mass spectrometric study of primary aerosol origination in an ethylene/air flame
A.V. Drakon, A.V. Eremin, R.N. Kolotushkin, A.A. Timoshenko, E.S. Khodyko
Joint Institute for High Temperatures of Russian Academy of Sciences, Moscow, Russia
Keywords: black carbon aerosol, organic aerosol, combustion, mass spectrometry, soot formation, benzene
Abstract
Emissions of carbon compounds formed during the combustion of hydrocarbon fuels change the thermal balance of the atmosphere, which leads to global warming. Reliable methods for diagnosing and monitoring emissions are necessary to control and assess the content of carbon compounds in the atmosphere. The paper presents a methodology for studying the formation of organic and black carbon aerosol. A flat ethylene/air laminar flame was used as a reactor in various experimental modes. An experimental setup was developed and used to analyze flame gas components by quadrupole mass spectrometry. The signal intensities were compared depending on the mass-to-charge ratio in the range 0-100. It has been shown that kinetic simulation and experimental results are qualitatively consistent when describing such components as H2O, O2, and CO2. It has also been shown that an increase in the equivalence ratio increases the concentrations of compounds associated with the formation of organic and black carbon aerosols. The results can be used to develop diagnostic and monitoring methods for organic and soot aerosols in the ambient air by tracking concentrations of signature compounds.
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