Results 31 to 40 of about 1,404,769 (279)

Chemical composition of the atmospheric aerosols in arctic regions in the summer of 2021

Лëд и снег, 2023
Atmospheric aerosol is an important characteristic of the state of the atmospheric air, therefore, in the summer of 2021, atmospheric aerosol samples were collected in the expeditions of the Shirshov Institute of Oceanology of the Russian Academy of ...
L. P. Golobokova, I. A. Kruglinsky, A. O. Pochufarov, I. I. Marinaite, N. A. Onishchuk, M. D. Kravchishina, M. V. Flint, M. Yu. Shikhovtsev, O. I. Khuriganova   +8 more
doaj   +1 more source

Hydration of the Bisulfate Ion: Atmospheric Implications [PDF]

The Journal of Physical Chemistry A, 2012
Using molecular dynamics configurational sampling combined with ab initio energy calculations, we determined the low energy isomers of the bisulfate hydrates. We calculated the CCSD(T) complete basis set (CBS) binding electronic and Gibbs free energies for 53 low energy isomers of HSO(4)(-)(H(2)O)(n=1-6) and derived the thermodynamics of adding waters ...
Husar, Devon E., Temelso, Berhane, Ashworth, Alexa L., Shields, George C.   +3 more
openaire   +2 more sources

Development of a Methodology for Determining Major Ions in Samples of Atmospheric Particulate Matter by Ion Chromatography

Orbital: The Electronic Journal of Chemistry, 2020
Countless deleterious effects on human health and the environment are promoted by the action of air pollutants. Thus, it is necessary the development of analytical methods to identify and quantify efficiently ions present in atmospheric particulate ...
José Domingos Santos da Silva, Alexandre Varão Moura, Thamilin Costa Nakamura, Enoc Lima do Rego, Priscila Gubert, Stelyus Lazaro Mkoma, Gisele Olimpio da Rocha   +6 more
doaj   +3 more sources

Characterization of a high detection-sensitivity atmospheric pressure interface time-of-flight mass spectrometer [PDF]

Atmospheric Measurement Techniques
We have characterised a new Atmospheric-Pressure-interface Time-of-Flight Mass Spectrometer, equipped with an octapole ion trap for accumulating the sampled ions before orthogonally accelerating them into the mass analyser.
F. Schmidt-Ott, F. Schmidt-Ott, S. Bhowmick, A. Lekkas, D. Papanastasiou, A. Maisser, G. Biskos, G. Biskos   +7 more
doaj   +1 more source

Design and Implementation of an Atmospheric Anion Monitoring System Based on Beidou Positioning

Sensors, 2021
Atmospheric oxygen anions play an important role in medical health, clinical medicine, environmental health, and the ecological environment. Therefore, the concentration of atmospheric anions is an important index for measuring air quality.
Jinhu Wang, Binze Xie, Jiahan Cai, Yuhao Wang, Jiang Chen, Muhammad Ilyas Abro   +5 more
doaj   +1 more source

Revealing the sources and sinks of negative cluster ions in an urban environment through quantitative analysis [PDF]

, 2023
Atmospheric cluster ions are important constituents in the atmosphere, and their concentrations and compositions govern their role in atmospheric chemistry.
F. Bianchi, R. Cai, N. Sarnela, Y. Zhou, X. Li, M. Kulmala, J. Jiang, J. Kangasluoma, V.-M. Kerminen, J. Lampilahti, T. Petäjä, C. Yan, R. Yin, Lampilahti, Janne, Petäjä, Tuukka, Li, Xiaoxiao, Yin, Rujing, Sarnela, Nina, Kangasluoma, Juha, Jiang, Jingkun, Kerminen, Veli-Matti, Zhou, Ying, Yan, Chao, Bianchi, Federico, Kulmala, Markku, Cai, Runlong   +25 more
core   +3 more sources

Parameterization of ion-induced nucleation rates based on ambient observations [PDF]

Atmospheric Chemistry and Physics, 2011
Atmospheric ions participate in the formation of new atmospheric aerosol particles, yet their exact role in this process has remained unclear. Here we derive a new simple parameterization for ion-induced nucleation or, more precisely, for the formation ...
T. Nieminen, P. Paasonen, H. E. Manninen, K. Sellegri, V.-M. Kerminen, M. Kulmala   +5 more
doaj   +1 more source

Experimental investigation of ion–ion recombination under atmospheric conditions [PDF]

Atmospheric Chemistry and Physics, 2015
Abstract. We present the results of laboratory measurements of the ion–ion recombination coefficient at different temperatures, relative humidities and concentrations of ozone and sulfur dioxide. The experiments were carried out using the Cosmics Leaving OUtdoor Droplets (CLOUD) chamber at CERN, the walls of which are made of conductive material ...
A. Franchin, S. Ehrhart, J. Leppä, T. Nieminen, S. Gagné, S. Schobesberger, D. Wimmer, J. Duplissy, F. Riccobono, E. M. Dunne, L. Rondo, A. Downard, F. Bianchi, A. Kupc, G. Tsagkogeorgas, K. Lehtipalo, H. E. Manninen, J. Almeida, A. Amorim, P. E. Wagner, A. Hansel, J. Kirkby, A. Kürten, N. M. Donahue, V. Makhmutov, S. Mathot, A. Metzger, T. Petäjä, R. Schnitzhofer, M. Sipilä, Y. Stozhkov, A. Tomé, V.-M. Kerminen, K. Carslaw, J. Curtius, U. Baltensperger, M. Kulmala   +36 more
openaire   +11 more sources

Impact of Bioaerosol Particles on Atmospheric Charging/Discharging and Conductivity in the Global Electric Circuit (GEC)

Aerobiology
Understanding the dynamics of atmospheric ions, the carriers of electrons and ions in the global electric circuit (GEC), is necessary to fully understand Earth’s atmospheric electricity. Because atmospheric ions are too small to be influenced by gravity,
Kenji Miki
doaj   +1 more source

Cosmic ray modulation of infra-red radiation in the atmosphere

Environmental Research Letters, 2013
Cosmic rays produce molecular cluster ions as they pass through the lower atmosphere. Neutral molecular clusters such as dimers and complexes are expected to make a small contribution to the radiative balance, but atmospheric absorption by charged ...
K L Aplin, M Lockwood
doaj   +1 more source