Zobrazeno 1 - 10
of 393
pro vyhledávání: '"S. Takahama"'
Autor:
E. Y. Li, A. Yazdani, A. M. Dillner, G. Shen, W. M. Champion, J. J. Jetter, W. T. Preston, L. M. Russell, M. D. Hays, S. Takahama
Publikováno v:
Atmospheric Measurement Techniques, Vol 17, Pp 2401-2413 (2024)
Globally, billions of people burn fuels indoors for cooking and heating, which contributes to millions of chronic illnesses and premature deaths annually. Additionally, residential burning contributes significantly to black carbon emissions, which ha
Externí odkaz:
https://doaj.org/article/258d4eb208ea4461abfc912db4724a2b
Publikováno v:
Atmospheric Measurement Techniques, Vol 16, Pp 3515-3529 (2023)
Organic sulfur and sulfate compounds, which are tracers for sources and atmospheric processes, are not currently measured in national monitoring networks such as the Interagency Monitoring of Protected Visual Environments (IMPROVE). The goal of this
Externí odkaz:
https://doaj.org/article/440adf1a84804a98bf2033b6a243ef38
Autor:
A. Yazdani, S. Takahama, J. K. Kodros, M. Paglione, M. Masiol, S. Squizzato, K. Florou, C. Kaltsonoudis, S. D. Jorga, S. N. Pandis, A. Nenes
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 7461-7477 (2023)
Primary emissions from wood and pellet stoves were aged in an atmospheric simulation chamber under daytime and nighttime conditions. The aerosol was analyzed with online aerosol mass spectrometry and offline Fourier transform infrared spectroscopy (F
Externí odkaz:
https://doaj.org/article/b1a37e8873274fe39a78b92f5c295f1f
Autor:
N. Dudani, S. Takahama
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 4693-4707 (2022)
Infrared (IR) spectroscopy is a direct measurement technique for chemical characterization of aerosols that can be applied without solvent extraction thermal treatment a priori. This technique has been used for chemical speciation, source apportionme
Externí odkaz:
https://doaj.org/article/13539bce41e74668aca220d8361a6f9d
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:
B. Debus, A. T. Weakley, S. Takahama, K. M. George, A. Amiri-Farahani, B. Schichtel, S. Copeland, A. S. Wexler, A. M. Dillner
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 2685-2702 (2022)
To enable chemical speciation, monitoring networks collect particulate matter (PM) on different filter media, each subjected to one or more analytical techniques to quantify PM composition present in the atmosphere. In this work, we propose an altern
Externí odkaz:
https://doaj.org/article/9a4eca4a340547d5a1f0e133f5481a6b
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 17687-17714 (2021)
Liquid–liquid phase-separated (LLPS) aerosol particles are known to exhibit increased cloud condensation nuclei (CCN) activity compared to well-mixed ones due to a complex effect of low surface tension and non-ideal mixing. The relation between the
Externí odkaz:
https://doaj.org/article/76c71b86004e4831b1e88fa298b3fe46
Autor:
A. Yazdani, N. Dudani, S. Takahama, A. Bertrand, A. S. H. Prévôt, I. El Haddad, A. M. Dillner
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 10273-10293 (2021)
Particulate matter (PM) affects visibility, climate, and public health. Organic matter (OM), a uniquely complex portion of PM, can make up more than half of total atmospheric fine PM mass. We investigated the effect of aging on secondary organic aero
Externí odkaz:
https://doaj.org/article/f2d98c646e4645de9fa5236685f7e36a
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 4805-4827 (2021)
Organic matter (OM) is a major constituent of fine particulate matter, which contributes significantly to degradation of visibility and radiative forcing, and causes adverse health effects. However, due to its sheer compositional complexity, OM is di
Externí odkaz:
https://doaj.org/article/29643a86ad714cefb5590e1c8cdf3e29
Autor:
A. J. Boris, S. Takahama, A. T. Weakley, B. M. Debus, S. L. Shaw, E. S. Edgerton, T. Joo, N. L. Ng, A. M. Dillner
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 4355-4374 (2021)
Organic species within atmospheric particles vary widely in molecular structure. The variety of molecules that comprise the aerosol make it rich in information about its sources and chemical life cycle but also make particulate organic matter (OM) di
Externí odkaz:
https://doaj.org/article/23c7b23d538c46e69e4cd38f1d369bff