Zobrazeno 1 - 10
of 146
pro vyhledávání: '"J. T. Jayne"'
Autor:
C. Bi, J. E. Krechmer, G. O. Frazier, W. Xu, A. T. Lambe, M. S. Claflin, B. M. Lerner, J. T. Jayne, D. R. Worsnop, M. R. Canagaratna, G. Isaacman-VanWertz
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 6835-6850 (2021)
Chemical ionization mass spectrometry (CIMS) using iodide as a reagent ion has been widely used to classify organic compounds in the atmosphere by their elemental formula. Unfortunately, calibration of these instruments is challenging due to a lack o
Externí odkaz:
https://doaj.org/article/89ac4530b4f7492d8e166222ccc8808d
Autor:
C. Bi, J. E. Krechmer, G. O. Frazier, W. Xu, A. T. Lambe, M. S. Claflin, B. M. Lerner, J. T. Jayne, D. R. Worsnop, M. R. Canagaratna, G. Isaacman-VanWertz
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 3895-3907 (2021)
Atmospheric oxidation products of volatile organic compounds consist of thousands of unique chemicals that have distinctly different physical and chemical properties depending on their detailed structures and functional groups. Measurement techniques
Externí odkaz:
https://doaj.org/article/55ca49c72525454494fd3affeef6bd6c
Autor:
M. S. Claflin, D. Pagonis, Z. Finewax, A. V. Handschy, D. A. Day, W. L. Brown, J. T. Jayne, D. R. Worsnop, J. L. Jimenez, P. J. Ziemann, J. de Gouw, B. M. Lerner
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 133-152 (2021)
We have developed a field-deployable gas chromatograph (GC) with thermal desorption preconcentration (TDPC), which is demonstrated here with automatic detector switching between two high-resolution time-of-flight mass spectrometers (TOF-MSs) for in s
Externí odkaz:
https://doaj.org/article/90614d1c32b249868f0da94f8b1d9979
Autor:
A. Mehra, Y. Wang, J. E. Krechmer, A. Lambe, F. Majluf, M. A. Morris, M. Priestley, T. J. Bannan, D. J. Bryant, K. L. Pereira, J. F. Hamilton, A. R. Rickard, M. J. Newland, H. Stark, P. Croteau, J. T. Jayne, D. R. Worsnop, M. R. Canagaratna, L. Wang, H. Coe
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 9783-9803 (2020)
Aromatic volatile organic compounds (VOCs) are key anthropogenic pollutants emitted to the atmosphere and are important for both ozone and secondary organic aerosol (SOA) formation in urban areas. Recent studies have indicated that aromatic hydrocarb
Externí odkaz:
https://doaj.org/article/c28251e9568d4401bf4fd2e1013f2b32
Autor:
X. Zhang, H. Zhang, W. Xu, X. Wu, G. S. Tyndall, J. J. Orlando, J. T. Jayne, D. R. Worsnop, M. R. Canagaratna
Publikováno v:
Atmospheric Measurement Techniques, Vol 12, Pp 5535-5545 (2019)
We demonstrate the capability of the ion mobility mass spectrometry (IMS-MS) for molecular characterization of reactive and short-lived alkyl nitrates (ANs) in atmospheric aerosols. We show significantly enhanced sensitivity towards the intact molecu
Externí odkaz:
https://doaj.org/article/3e701435cbf9441a9ade281ae0ae30de
Autor:
S. Saarikoski, L. R. Williams, S. R. Spielman, G. S. Lewis, A. Eiguren-Fernandez, M. Aurela, S. V. Hering, K. Teinilä, P. Croteau, J. T. Jayne, T. Hohaus, D. R. Worsnop, H. Timonen
Publikováno v:
Atmospheric Measurement Techniques, Vol 12, Pp 3907-3920 (2019)
An air-to-air ultrafine particle concentrator (Aerosol Dynamics Inc. concentrator; ADIc) has been designed to enhance online chemical characterization of ambient aerosols using aerosol mass spectrometry. The ADIc employs a three-stage, moderated wate
Externí odkaz:
https://doaj.org/article/fa7298ab70e347378e120517cb4bc070
Autor:
R. E. O'Brien, K. J. Ridley, M. R. Canagaratna, J. T. Jayne, P. L. Croteau, D. R. Worsnop, S. H. Budisulistiorini, J. D. Surratt, C. L. Follett, D. J. Repeta, J. H. Kroll
Publikováno v:
Atmospheric Measurement Techniques, Vol 12, Pp 1659-1671 (2019)
The elemental composition of organic material in environmental samples – including atmospheric organic aerosol, dissolved organic matter, and other complex mixtures – provides insights into their sources and environmental processing. However, sta
Externí odkaz:
https://doaj.org/article/f928b20ea1c845c8842c1109be109ff6
Autor:
S. Song, M. Gao, W. Xu, Y. Sun, D. R. Worsnop, J. T. Jayne, Y. Zhang, L. Zhu, M. Li, Z. Zhou, C. Cheng, Y. Lv, Y. Wang, W. Peng, X. Xu, N. Lin, S. Wang, J. W. Munger, D. J. Jacob, M. B. McElroy
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 1357-1371 (2019)
The chemical mechanisms responsible for rapid sulfate production, an important driver of winter haze formation in northern China, remain unclear. Here, we propose a potentially important heterogeneous hydroxymethanesulfonate (HMS) chemical mechanism.
Externí odkaz:
https://doaj.org/article/1ce080a660fe4d3f9137d2e4b1b765be
Autor:
Y. Zhang, S. Katira, A. Lee, A. T. Lambe, T. B. Onasch, W. Xu, W. A. Brooks, M. R. Canagaratna, A. Freedman, J. T. Jayne, D. R. Worsnop, P. Davidovits, D. Chandler, C. E. Kolb
Publikováno v:
Atmospheric Measurement Techniques, Vol 11, Pp 3479-3490 (2018)
Glass transitions from liquid to semi-solid and solid phase states have important implications for reactivity, growth, and cloud-forming (cloud condensation nuclei and ice nucleation) capabilities of secondary organic aerosols (SOAs). The small si
Externí odkaz:
https://doaj.org/article/14e455ca6a844232a18fd605257993d7
Autor:
Y. Zhang, L. Tang, P. L. Croteau, O. Favez, Y. Sun, M. R. Canagaratna, Z. Wang, F. Couvidat, A. Albinet, H. Zhang, J. Sciare, A. S. H. Prévôt, J. T. Jayne, D. R. Worsnop
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Pp 14501-14517 (2017)
A PM2.5-capable aerosol chemical speciation monitor (Q-ACSM) was deployed in urban Nanjing, China, for the first time to measure in situ non-refractory fine particle (NR-PM2.5) composition from 20 October to 19 November 2015, along with parallel m
Externí odkaz:
https://doaj.org/article/b1c8ec7250d148c3bf5d14153c51ea2a