Environmental Science and Pollution Research

, Volume 21, Issue 15, pp 9259–9269

Formation of indoor nitrous acid (HONO) by light-induced NO2 heterogeneous reactions with white wall paint

  • Vincent Bartolomei
  • Matthias Sörgel
  • Sasho Gligorovski
  • Elena Gómez Alvarez
  • Adrien Gandolfo
  • Rafal Strekowski
  • Etienne Quivet
  • Andreas Held
  • Cornelius Zetzsch
  • Henri Wortham
Research Article

DOI: 10.1007/s11356-014-2836-5

Cite this article as:
Bartolomei, V., Sörgel, M., Gligorovski, S. et al. Environ Sci Pollut Res (2014) 21: 9259. doi:10.1007/s11356-014-2836-5

Abstract

Gaseous nitrogen dioxide (NO2) represents an oxidant that is present in relatively high concentrations in various indoor settings. Remarkably increased NO2 levels up to 1.5 ppm are associated with homes using gas stoves. The heterogeneous reactions of NO2 with adsorbed water on surfaces lead to the generation of nitrous acid (HONO). Here, we present a HONO source induced by heterogeneous reactions of NO2 with selected indoor paint surfaces in the presence of light (300 nm < λ < 400 nm). We demonstrate that the formation of HONO is much more pronounced at elevated relative humidity. In the presence of light (5.5 W m−2), an increase of HONO production rate of up to 8.6 · 109 molecules cm−2 s−1 was observed at [NO2] = 60 ppb and 50 % relative humidity (RH). At higher light intensity of 10.6 (W m−2), the HONO production rate increased to 2.1 · 1010 molecules cm−2 s−1. A high NO2 to HONO conversion yield of up to 84 % was observed. This result strongly suggests that a light-driven process of indoor HONO production is operational. This work highlights the potential of paint surfaces to generate HONO within indoor environments by light-induced NO2 heterogeneous reactions.

Keywords

HONO Indoor Light Heterogeneous reactions Paint 

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Vincent Bartolomei
    • 1
  • Matthias Sörgel
    • 2
    • 3
  • Sasho Gligorovski
    • 1
  • Elena Gómez Alvarez
    • 1
  • Adrien Gandolfo
    • 1
  • Rafal Strekowski
    • 1
  • Etienne Quivet
    • 1
  • Andreas Held
    • 2
  • Cornelius Zetzsch
    • 2
  • Henri Wortham
    • 1
  1. 1.Aix Marseille UniversityMarseille Cedex 3France
  2. 2.Forschungsstelle für Atmosphärische ChemieUniversität BayreuthBayreuthGermany
  3. 3.Biogeochemistry DepartmentMax Planck Institute for ChemistryMainzGermany

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