Measurements of atmospheric HNO3, HCl and associated species on a small network in eastern England |
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| Institution: | 1. Laboratoire de Physicochimie de l’Atmosphère, Université du Littoral Côte d’Opale, 189A, Av. Maurice Schumann, 59140 Dunkerque, France;2. Anhui Institute of Optics & Fine Mechanics, Chinese Academy of Sciences, 230031 Hefei, China;3. ETH Zurich, Institute for Quantum Electronics, Otto-Stern-Weg 1, CH-8093 Zurich, Switzerland;1. Division Cardiothoracic Surgery, Department of Surgery, Harvard Medical School, Boston, Massachusetts;2. Department of Surgery, Brigham and Women׳s Hospital, Boston, Massachusetts;3. VA Boston Healthcare System, Boston, Massachusetts;1. Department of Physics and Astronomy – University of Florence, Italy;2. National Institute of Nuclear Physics (INFN) – Florence, Via G. Sansone 1, 50019 Sesto Fiorentino (Fi), Italy;3. Department of Chemistry – University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (Fi), Italy;4. Institute of Environmental Assessment and Water Research (IDAEA-CSIC), 08034 Barcelona, Spain;5. Centre for Environmental and Marine Studies (CESAM), Department of Environment, University of Aveiro, 3810-193 Aveiro, Portugal;6. Environmental Radioactivity Laboratory, N.C.S.R. Demokritos Univ., 15341 Ag. Paraskevi, Attiki, Greece;1. PPGC – Instituto de Informática – Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500 – Bloco IV – Po Box 15064, Porto Alegre, RS, Brazil;2. Centro de Pesquisas René Rachou – FIOCRUZ MINAS, Av. Augusto de Lima, 1715 – 30190-002, Belo Horizonte, MG, Brazil;1. Jiangxi Province Key Laboratory of the Causes and Control of Atmospheric Pollution, East China University of Technology, Nanchang, 330013, China;2. School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang, 330013, China;3. School of Environmental Science and Engineering, Shandong University, Jinan, China |
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| Abstract: | Measurements of gaseous HNO3, HCl and NH3 and particulate NO3−, SO42−, Cl− and NH4+ have been made at a small network of sites in eastern England using sampling intervals from 3 h to 7 days. Both HCl and HNO3 are spatially rather uniform, with some variation apparently due to spatial variations in NH3, which stoichiometrically exeeded the sum of both gaseous acids. Mean concentrations of NH3, HCl and HNO3 between February 1987 and January 1988 were 1.90, 0.67 and 1.01 μg m−3, respectively. Pollution roses revealed low NH3 concentrations, and high associated HCl and HNO3 with winds from the North Sea. HCl, but not HNO3 showed an appreciable elevation in concentration on the sector NW from our site, which we speculate may be due to the large capacity of coal-fired power stations in this upwind sector. Three-hourly data have been examined for diurnal effects and its is concluded that nocturnal formation of NO3− is occurring. |
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