Zobrazeno 1 - 10
of 394
pro vyhledávání: '"I. El Haddad"'
Autor:
I. El Haddad, D. Vienneau, K. R. Daellenbach, R. Modini, J. G. Slowik, A. Upadhyay, P. N. Vasilakos, D. Bell, K. de Hoogh, A. S. H. Prevot
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 11981-12011 (2024)
Air pollution, characterized by high levels of particulate matter (PM), poses the greatest environmental threat to human health, causing an estimated 7 million deaths annually and accounting for 5 % of the global gross domestic product (GDP). While t
Externí odkaz:
https://doaj.org/article/d1dc0b5fb5d44724ab9a026c9db0b53b
Autor:
J. Zhang, K. Li, T. Wang, E. Gammelsæter, R. K. Y. Cheung, M. Surdu, S. Bogler, D. Bhattu, D. S. Wang, T. Cui, L. Qi, H. Lamkaddam, I. El Haddad, J. G. Slowik, A. S. H. Prevot, D. M. Bell
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 14561-14576 (2023)
During the past decades, the source apportionment of organic aerosol (OA) in ambient air has been improving substantially. The database of source retrieval model-resolved mass spectral profiles for different sources has been built with the aerosol ma
Externí odkaz:
https://doaj.org/article/9e480d350cc94e04ac37158e459fb07f
Autor:
E. L. Graham, C. Wu, D. M. Bell, A. Bertrand, S. L. Haslett, U. Baltensperger, I. El Haddad, R. Krejci, I. Riipinen, C. Mohr
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 7347-7362 (2023)
Secondary organic aerosol (SOA) is formed through the oxidation of volatile organic compounds (VOCs), which can be of both natural and anthropogenic origin. While the hydroxyl radical (OH) and ozone (O3) are the main atmospheric oxidants during the d
Externí odkaz:
https://doaj.org/article/734ec099a059429c87800754dc9cb450
Autor:
J. Pfeifer, N. G. A. Mahfouz, B. C. Schulze, S. Mathot, D. Stolzenburg, R. Baalbaki, Z. Brasseur, L. Caudillo, L. Dada, M. Granzin, X.-C. He, H. Lamkaddam, B. Lopez, V. Makhmutov, R. Marten, B. Mentler, T. Müller, A. Onnela, M. Philippov, A. A. Piedehierro, B. Rörup, M. Schervish, P. Tian, N. S. Umo, D. S. Wang, M. Wang, S. K. Weber, A. Welti, Y. Wu, M. Zauner-Wieczorek, A. Amorim, I. El Haddad, M. Kulmala, K. Lehtipalo, T. Petäjä, A. Tomé, S. Mirme, H. E. Manninen, N. M. Donahue, R. C. Flagan, A. Kürten, J. Curtius, J. Kirkby
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 6703-6718 (2023)
Aerosol particles have an important role in Earth's radiation balance and climate, both directly and indirectly through aerosol–cloud interactions. Most aerosol particles in the atmosphere are weakly charged, affecting both their collision rates wi
Externí odkaz:
https://doaj.org/article/3da9fd914931429db872ebd380de13bb
Autor:
D. M. Bell, C. Wu, A. Bertrand, E. Graham, J. Schoonbaert, S. Giannoukos, U. Baltensperger, A. S. H. Prevot, I. Riipinen, I. El Haddad, C. Mohr
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 13167-13182 (2022)
The NO3 radical represents a significant nighttime oxidant which is present downstream of polluted environments. Existing studies have investigated the formation of secondary organic aerosol (SOA) from NO3 radicals, focusing on the yields, general co
Externí odkaz:
https://doaj.org/article/c3879575d0ce4fc184671d501004d408
Autor:
C. P. Lee, M. Surdu, D. M. Bell, J. Dommen, M. Xiao, X. Zhou, A. Baccarini, S. Giannoukos, G. Wehrle, P. A. Schneider, A. S. H. Prevot, J. G. Slowik, H. Lamkaddam, D. Wang, U. Baltensperger, I. El Haddad
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 3747-3760 (2022)
To elucidate the sources and chemical reaction pathways of organic vapors and particulate matter in the ambient atmosphere, real-time detection of both the gas and particle phase is needed. State-of-the-art techniques often suffer from thermal decomp
Externí odkaz:
https://doaj.org/article/5d9f9adbb9e54e809eca0d616390fc2d
Autor:
A. Yazdani, N. Dudani, S. Takahama, A. Bertrand, A. S. H. Prévôt, I. El Haddad, A. M. Dillner
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 2857-2874 (2022)
Aerosol mass spectrometry (AMS) and mid-infrared spectroscopy (MIR) are two analytical methods for characterizing the chemical composition of organic matter (OM). While AMS provides high-temporal-resolution bulk measurements, the extensive fragmentat
Externí odkaz:
https://doaj.org/article/959e67d43e7344f894623bf64e32b086
Autor:
D. A. Amaladhasan, C. Heyn, C. R. Hoyle, I. El Haddad, M. Elser, S. M. Pieber, J. G. Slowik, A. Amorim, J. Duplissy, S. Ehrhart, V. Makhmutov, U. Molteni, M. Rissanen, Y. Stozhkov, R. Wagner, A. Hansel, J. Kirkby, N. M. Donahue, R. Volkamer, U. Baltensperger, M. Gysel-Beer, A. Zuend
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 215-244 (2022)
This study presents a characterization of the hygroscopic growth behaviour and effects of different inorganic seed particles on the formation of secondary organic aerosols (SOAs) from the dark ozone-initiated oxidation of isoprene at low NOx conditio
Externí odkaz:
https://doaj.org/article/3ef2169111294332bfdd61d1afc701f3
Autor:
D. S. Wang, C. P. Lee, J. E. Krechmer, F. Majluf, Y. Tong, M. R. Canagaratna, J. Schmale, A. S. H. Prévôt, U. Baltensperger, J. Dommen, I. El Haddad, J. G. Slowik, D. M. Bell
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 6955-6972 (2021)
Online characterization of aerosol composition at the near-molecular level is key to understanding chemical reaction mechanisms, kinetics, and sources under various atmospheric conditions. The recently developed extractive electrospray ionization tim
Externí odkaz:
https://doaj.org/article/0fc6bfa7216842128b1f9c5fb33cb90f
Autor:
L. Caudillo, B. Rörup, M. Heinritzi, G. Marie, M. Simon, A. C. Wagner, T. Müller, M. Granzin, A. Amorim, F. Ataei, R. Baalbaki, B. Bertozzi, Z. Brasseur, R. Chiu, B. Chu, L. Dada, J. Duplissy, H. Finkenzeller, L. Gonzalez Carracedo, X.-C. He, V. Hofbauer, W. Kong, H. Lamkaddam, C. P. Lee, B. Lopez, N. G. A. Mahfouz, V. Makhmutov, H. E. Manninen, R. Marten, D. Massabò, R. L. Mauldin, B. Mentler, U. Molteni, A. Onnela, J. Pfeifer, M. Philippov, A. A. Piedehierro, M. Schervish, W. Scholz, B. Schulze, J. Shen, D. Stolzenburg, Y. Stozhkov, M. Surdu, C. Tauber, Y. J. Tham, P. Tian, A. Tomé, S. Vogt, M. Wang, D. S. Wang, S. K. Weber, A. Welti, W. Yonghong, W. Yusheng, M. Zauner-Wieczorek, U. Baltensperger, I. El Haddad, R. C. Flagan, A. Hansel, K. Höhler, J. Kirkby, M. Kulmala, K. Lehtipalo, O. Möhler, H. Saathoff, R. Volkamer, P. M. Winkler, N. M. Donahue, A. Kürten, J. Curtius
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 17099-17114 (2021)
Biogenic organic precursors play an important role in atmospheric new particle formation (NPF). One of the major precursor species is α-pinene, which upon oxidation can form a suite of products covering a wide range of volatilities. Highly oxygenate
Externí odkaz:
https://doaj.org/article/49e181487bc54896a3f154f556547c1d