Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Ranajit K. Talukdar"'
Autor:
Demetrios Pagonis, Jordan E. Krechmer, Jose L. Jimenez, Paul J. Ziemann, Joost A. de Gouw, Benjamin L. Deming, Douglas A. Day, Ranajit K. Talukdar, Xiaoxi Liu
Publikováno v:
Atmospheric Measurement Techniques, Vol 12, Pp 3453-3461 (2019)
Losses of gas-phase compounds or delays on their transfer through tubing are important for atmospheric measurements and also provide a method to characterize and quantify gas-surface interactions. Here we expand recent results by comparing different
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::678a2e39d4bc9276e0706b8c4581925a
https://doi.org/10.5194/amt-12-3453-2019
https://doi.org/10.5194/amt-12-3453-2019
Autor:
Bartłomiej Witkowski, Yong Liu, Vanessa Selimovic, Robert J. Yokelson, Carsten Warneke, Kanako Sekimoto, Chelsea E. Stockwell, Ann M. Middlebrook, Rebecca A. Washenfelder, Kyle J. Zarzana, Ranajit K. Talukdar, James M. Roberts, Agnieszka Kupc
Publikováno v:
Atmospheric Measurement Techniques, Vol 11, Pp 2749-2768 (2018)
The chemical composition of aerosol particles is a key aspect in determining their impact on the environment. For example, nitrogen-containing particles impact atmospheric chemistry, air quality, and ecological N deposition. Instruments that measure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::444b07216752a76bd4d35031f208e140
https://www.atmos-meas-tech.net/11/2749/2018/amt-11-2749-2018.pdf
https://www.atmos-meas-tech.net/11/2749/2018/amt-11-2749-2018.pdf
Autor:
Douglas A. Day, Andrew T. Lambe, Ranajit K. Talukdar, Brett B. Palm, Jose L. Jimenez, Zhe Peng, William H. Brune, Weiwei Hu
Publikováno v:
ACS Earth and Space Chemistry. 2:72-86
Oxidation flow reactors (OFRs) efficiently produce OH radicals using low-pressure Hg-lamp emissions at λ = 254 nm (OFR254) or both λ = 185 and 254 nm (OFR185). OFRs under most conditions are limited to studying low-NO chemistry (where RO2 + HO2 dom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d72304d3eee471234932dbb7ac3126b7
https://doi.org/10.1021/acsearthspacechem.7b00070
https://doi.org/10.1021/acsearthspacechem.7b00070
Autor:
Robert J. Yokelson, Kanako Sekimoto, Carsten Warneke, Kyle J. Zarzana, Ranajit K. Talukdar, Rebecca A. Washenfelder, Ann M. Middlebrook, Bartłomiej Witkowski, Yong Liu, Vanessa Selimovic, James M. Roberts, Agnieszka Kupc, Chelsea E. Stockwell
The chemical composition of aerosol particles is a key aspect in determining their impact on the environment. For example, nitrogen (N)-containing particles impact atmospheric chemistry, air quality, and ecological N-deposition. Instruments that meas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5664880ba0b1e5615b43d85d5a4ab365
https://doi.org/10.5194/amt-2017-419
https://doi.org/10.5194/amt-2017-419
Autor:
Chelsea E. Stockwell, Agnieszka Kupc, Bartlomiej Witkowski, Ranajit K. Talukdar, Yong Liu, Vanessa Selimovic, Kyle J. Zarzana, Kanako Sekimoto, Carsten Warneke, Rebecca A. Washenfelder, Robert J. Yokelson, Ann M. Middlebrook, James M. Roberts
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d6f223f1c73ab2191e4b7a4a1d1aa37
https://doi.org/10.5194/amt-2017-419-supplement
https://doi.org/10.5194/amt-2017-419-supplement
Autor:
Cora J. Young, James M. Roberts, Trevor C. VandenBoer, Ranajit K. Talukdar, Milos Z. Markovic, Jennifer G. Murphy, Steven S. Brown
Publikováno v:
Nature Geoscience. 8:55-60
Nitrous acid cycling contributes significantly to the atmospheric oxidation capacity. Flow tube experiments and field monitoring reveal a night-time nitrous acid sink in soils, and subsequent release during the day.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8fcc34bfc258292a8c5c76880f9c4e7
https://doi.org/10.1038/ngeo2298
https://doi.org/10.1038/ngeo2298
Autor:
Robert W. Portmann, Ranajit K. Talukdar, James B. Burkholder, James M. Roberts, A. R. Ravishankara
Publikováno v:
The Journal of Physical Chemistry A. 116:6003-6014
The reaction of dinitrogen pentoxide, N2O5, with hydrogen chloride, HCl, in sulfuric acid solutions was studied at temperatures and compositions relevant to the upper troposphere/lower stratosphere. Experiments were performed using a rotating wetted
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98831da7f113850c871d45b1f5554d93
https://doi.org/10.1021/jp210960z
https://doi.org/10.1021/jp210960z
Publikováno v:
Atmospheric Chemistry and Physics. 11:10837-10851
Rate coefficients, k, for the gas-phase reaction of CH3COCHO (methylglyoxal) with the OH and NO3 radicals and (CHO)2 (glyoxal) with the NO3 radical are reported. Rate coefficients for the OH + CH3COCHO (k1) reaction were measured under pseudo-first-o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50483f7d9ab3100b19e693b3b52efeef
https://doi.org/10.5194/acp-11-10837-2011
https://doi.org/10.5194/acp-11-10837-2011
Autor:
Dimitrios K. Papanastasiou, James B. Burkholder, James M. Roberts, Ranajit K. Talukdar, Buddhadeb Ghosh
Publikováno v:
The Journal of Physical Chemistry A. 116:5796-5805
Recent studies have shown that the UV/vis photolysis of nitryl chloride (ClNO2) can be a major source of reactive chlorine in the troposphere. The present work reports measurements of the ClNO2 absorption spectrum and its temperature dependence betwe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87b4e20a2a8f300d1780801e6b975890
https://doi.org/10.1021/jp207389y
https://doi.org/10.1021/jp207389y
Publikováno v:
Zeitschrift für Physikalische Chemie. 224:989-1007
Previous studies have suggested that the reaction of O2(1Σg +) + N2O → NO + NO2 may be a significant source of NOx in the atmosphere if the branching ratio of this channel is greater than ~1%. We have measured the overall rate coefficient (k1) for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0716a5f22d6cf3202330150538b80b4e
https://doi.org/10.1524/zpch.2010.6137
https://doi.org/10.1524/zpch.2010.6137