Transformation of polycyclic aromatic Hydrocarbons During sampling in ambient Air by Exposure to different oxidized Nitrogen Compounds and Ozone

It has been reported earlier that individual PAH can undergo chemical transformation when exposed to gases such as NO2 and O3. In this paper the possibility of artifact formation due to such transformations during sampling in ambient air is discussed. Addition of 1 ppm NO2 or 120 ppb HNO3 (g) during ambient air samling caused degradation of reactive PAH on particles and formation of the corresponding monoitro-PAH. The degradation due to NO2 exposure increased int he presence of acid on the particles. Addition of 100 ppb HNO2 (g) had not detectable effect. The results indicate that NO2 concentrations within the range normally formed in urban air may cause degradation of some reactive PAH. In the case of O3 addition (200 ppb), degradation was obtained in one of the experiments only

Subscribe to our newsletter

Last updated: 2021-05-05

IVL Swedish Environmental Research Institute

About IVL

IVL Swedish Environmental Research Institute has a wide environmental profile. We combine applied research and development with close collaboration between industry and the public sphere. Our consultancy is evidence-based, and our research is characterized by interdisciplinary science and system thinking.

Contact

Ikon med telefon

+46 (0)10-788 65 00

Social media

Ikon med LikedIn
Ikon med twitter
Ikon med facebook

Career

© 2023 IVL Svenska Miljöinstitutet AB | About Cookies | How we process personal data

Ikon med kryss
To top