Photosensitized reduction of nitrogen dioxide on humic acid as a source of nitrous acid
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Light 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...
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Nitrous acid (HONO) may be generated by heterogeneous reactions of nitrogen dioxide and direct emission from combustion sources. Interactions among nitrogen oxides and ozone are important for outdoor photochemical reactions. However, little is known of indoor HONO levels or the relationship between residential HONO, NO(2), and O(3) concentrations in occupied houses. Six-day integrated indoor an...
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15 صفحه اولInteractive comment on “Light induced conversion of nitrogen dioxide into nitrous acid on submicron humic acid aerosol” by K. Stemmler et al
We would like to thank this reviewer for thoroughly reading this manuscript and the constructive comments. In our response, we directly refer to the numbered comments raised by the referee. Major comments: 1)Nature of humic acid aerosol As noted in the reply to the other referees, we admit that the humic acid microstructure is not well known under the conditions of our experiments. We also assu...
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ژورنال
عنوان ژورنال: Nature
سال: 2006
ISSN: 0028-0836,1476-4687
DOI: 10.1038/nature04603