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Article Dans Une Revue Environmental Science and Technology Letters Année : 2020

Evolution of Indoor Cooking Emissions Captured by Using Secondary Electrospray Ionization High-Resolution Mass Spectrometry

Jiafa Zeng
  • Fonction : Auteur
Zhujun Yu
  • Fonction : Auteur
Majda Mekic
  • Fonction : Auteur
Jiangping Liu
  • Fonction : Auteur
Sheng Li
  • Fonction : Auteur
Gwendal Loisel
  • Fonction : Auteur
Wei Gao
  • Fonction : Auteur
Adrien Gandolfo
Zhen Zhou
  • Fonction : Auteur
Xinming Wang
Hartmut Herrmann
Sasho Gligorovski
  • Fonction : Auteur
Xue Li

Résumé

Cooking emissions represent a major source of air pollution in the indoor environment and exhibit adverse health effects caused by particulate matter together with volatile organic compounds (VOCs). A multitude of unknown compounds are released during cooking, some of which play important roles as precursors of more hazardous secondary organic aerosols in indoor air. Here, we applied secondary electrospray ionization highresolution mass spectrometry for real-time measurements of VOCs and particles from cooking peanut oil in the presence of 300 ppbv nitrogen oxides (NO x) generated by a gas stove in an indoor environment. More than 600 compounds have been found during and after cooking, including N-heterocyclic compounds, Oheterocyclic compounds, aldehydes, fatty acids, and oxidation products. Approximately 200 compounds appeared after cooking and were hence secondarily formed products. The most abundant compound was 9-oxononanoic acid (C 9 H 16 O 3), which is likely the product formed during the heterogeneous hydroxyl (OH) radical oxidation of oleic acid (C 18 H 34 O 2) or linoleic acid (C 18 H 32 O 2). Real-time detection of an important number of organic compounds in indoor air poses a challenge to indoor air quality and models, which do not account for this extremely large range of compounds.
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Dates et versions

hal-03151910 , version 1 (25-02-2021)

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Jiafa Zeng, Zhujun Yu, Majda Mekic, Jiangping Liu, Sheng Li, et al.. Evolution of Indoor Cooking Emissions Captured by Using Secondary Electrospray Ionization High-Resolution Mass Spectrometry. Environmental Science and Technology Letters, 2020, 7 (2), pp.76-81. ⟨10.1021/acs.estlett.0c00044⟩. ⟨hal-03151910⟩
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