Heterogeneous conversion of NO2 on secondary organic aerosol surfaces
نویسنده
چکیده
Heterogeneous conversion of NO2 on secondary organic aerosol surfaces: A possible source of nitrous acid (HONO) in the atmosphere? R. Bröske, J. Kleffmann, and P. Wiesen Physikalische Chemie/FB 9, Bergische Universität – Gesamthochschule Wuppertal (BUGHW), D-42097 Wuppertal, Germany Received: 18 November 2002 – Accepted: 6 January 2003 – Published: 7 February 2003 Correspondence to: J. Kleffmann ([email protected])
منابع مشابه
Heterogeneous conversion of NO2 on secondary organic aerosol surfaces: A possible source of nitrous acid (HONO) in the atmosphere?
The heterogeneous conversion of NO2 on different secondary organic aerosols (SOA) was investigated with the focus on a possible formation of nitrous acid (HONO). In one set of experiments different organic aerosols were produced in the reactions of O3 with α-pinene, limonene or catechol and OH radicals with toluene or limonene, respectively. The aerosols were sampled on filters and exposed to h...
متن کاملImpacts of HONO sources on the photochemistry in Mexico City during the MCMA-2006/MILAGO Campaign
The contribution of HONO sources to the photochemistry in Mexico City is investigated during the MCMA2006/MILAGO Campaign using the WRF-CHEM model. Besides the homogeneous reaction of NO with OH, four additional HONO sources are considered in the WRF-CHEM model: secondary HONO formation from NO2 heterogeneous reaction with semivolatile organics, NO2 reaction with freshly emitted soot, NO2 heter...
متن کاملLight induced conversion of nitrogen dioxide into nitrous acid on submicron humic acid aerosol
The interactions of aerosols consisting of humic acids with gaseous nitrogen dioxide (NO2) were investigated under different light conditions in aerosol flow tube experiments at ambient pressure and temperature. The results show that NO2 is converted on the humic acid aerosol into nitrous acid (HONO), which is released from the aerosol and can be detected in the gas phase at the reactor exit. T...
متن کاملCompeting reactions of selected atmospheric gases on Fe3O4 nanoparticles surfaces.
Heterogeneous reactions on atmospheric aerosol surfaces are increasingly considered important in understanding aerosol-cloud nucleation and climate change. To understand potential reactions in polluted atmospheres, the co-adsorption of NO2 and toluene to magnetite (Fe3O4i.e. FeO·Fe2O3) nanoparticles at ambient conditions was investigated for the first time. The surface area, size distribution, ...
متن کاملA qualitative comparison of secondary organic aerosol yields and composition from ozonolysis of monoterpenes at varying concentrations of NO2
The effect of NO2 on secondary organic aerosol (SOA) formation from ozonolysis of α-pinene, β-pinene, 1-carene, and limonene was investigated using a dark flowthrough reaction chamber. SOA mass yields were calculated for each monoterpene from ozonolysis with varying NO2 concentrations. Kinetics modeling of the first-generation gasphase chemistry suggests that differences in observed aerosol yie...
متن کامل