Physico-chemical behaviour of atmospheric pollutants : proceedings of the fourth European symposium held in Stresa, Italy, 23-25 September 1986 ; organized within the framework of the Concerted Action COST 611

Front Matter....Pages i-xiii Front Matter....Pages 1-2 Summary by the Chairman....Pages 3-4 Detection of Gaseous Nitric Acid by OH(A→X) — Fluorescence Generated by ArF-Laser Irradiation....Pages 5-14 Preparation of Standard Atmospheres of Nitrogen Acid Compounds: The NO 2 Permeation Tube....Pages 15-24 Automated Denuder Systems....Pages 25-32 A Battery-Powered Light-Weight Ozone Analyzer for Use in the Troposphere and Stratosphere....Pages 33-44 H 2 O 2 in Solid Precipitation....Pages 45-57 Detection of Nitrated and Oxygenated Polyaromatic Hydrocarbons (PAH) in Suspended Particulate Matter Sampled in Urban Areas and their Relation with Anthropogenic Emission and Photochemical Smog Formation....Pages 58-68 Field Intercomparison of Sampling and Analytical Methods for SO2 and SO4 In Ambient Air....Pages 69-78 Field measurements on the use of Denuders for the Evaluation of Acid Deposition....Pages 79-102 Use of Air — SO 2 Mixtures for Intercomparison of SO 2 Monitors in the EEC....Pages 103-113 Determination of Polychlorinated Dibenzo-P-Dioxins and Dibenzofurans in Outdoor Air....Pages 114-120 Measurement of Atmospheric Nitrous and Nitric Acid by Means of Annular Denuders....Pages 121-125 Evaluation of Analytical Methods for the Determination of Degradation Products of Chlorinated Hydrocarbons....Pages 126-132 Sampling of Aldehydes and Carbonyl Compounds in Air and Their Determination by Liquid Chromatographic Techniques....Pages 133-141 The Use of a Filter Pack for the Monitoring Organic and Inorganic Acid Species in Air....Pages 142-147 IR-Tunable Diode Laser Techniques for Trace Gas Detection at PPBV Level....Pages 148-156 Measurement of Airborne Hydrocarbons by Headspace-Chromatography....Pages 157-165 A Study of Atmospheric Deposition Chemistry in Peninsular and Insular Italy....Pages 166-175 Chemistry of Atmospheric Depositions at L. Toggia (2160 m a.s.l.), with Emphasis on the Sampling Procedure....Pages 176-187 Analysis of Carbonyl Compounds in the Atmospheric Liquid Phase....Pages 188-197 Front Matter....Pages 199-200 Summary by the Chairman....Pages 201-204 Photo-Oxidation of Sulphur Containing Compounds....Pages 205-211 Kinetic Studies of Oxidation Reactions of Sulfur Compounds: Reaction SO 2 + OH in the Presence Of O 2 , and Reaction IO + DMS....Pages 212-217 A Comparison of Models for the Oxidation of Acetylene at 300 K....Pages 218-224 Rate Constants for Reaction of OH Radicals with Acetates and Glycols in the Gas Phase....Pages 225-235 OH-Dynamics during Hydrocarbon Oxidation in Air....Pages 236-248 Aqueous Phase Chemistry of Biogenic Sulphur Compounds....Pages 249-257 Field Investigations on the Variability of H 2 O 2 Concentration in Atmospheric Gas Phase....Pages 258-270 A Study of the HO 2 + CH 3 CHO Reaction in the Photolysis of CH 3 CHO, and its Consequences for Atmospheric Chemistry....Pages 271-281 Laboratory Studies of the Nitrate Radical....Pages 282-291 Quelques Aspects de la Chimie des Aldehydes dans la Basse Troposphere....Pages 292-299 Kinetics of the Formation of Nitrous Acid from the Thermal Reaction of Nitrogen Dioxide and Water Vapour....Pages 300-308 FT-IR Laboratory Studies of Kinetics of the NO x /O 3 System of Tropospheric Interest....Pages 309-319 OH-Initiated Oxidation of P-Xylene Under Atmospheric Conditions....Pages 320-326 Products and Kinetics of the OH Initiated Oxidation of SO 2 , CH 3 SH, DMS, DMDS and DMSO....Pages 327-337 Absolute rate constant for the reaction of OH with SO 2 in the presence of water at atmospheric pressure....Pages 338-344 The Role of Transition Metal Ions in Atmospheric Droplet Chemistry....Pages 345-355 Front Matter....Pages 357-358 Summary by the Chairman....Pages 359-360 Below and in Cloud Scavenging of Particulates and Gases....Pages 361-373 Mesure D’Aerosols Dans La Foret Des Vosges (France)....Pages 374-379 Front Matter....Pages 357-358 Anionic Composition in Size-Fractionated Atmospheric Aerosol....Pages 380-385 Correlation Analysis Applied to a Sulphate and Nitrate Aerosol Measuring Network in the Netherlands....Pages 386-395 Cendres Volantes Industrielles et Microspherules Volcaniques: Criteres de Distinction par Microscopie Analytique....Pages 396-405 Radiolytic Aerosols: Their Production and Inhibition....Pages 406-412 Chlorides in Atmospheric Aerosols....Pages 413-417 Front Matter....Pages 419-420 Summary by the Chairman....Pages 421-425 Emissions of Biogenic Sulfur Compounds from Various Soils....Pages 427-433 Dimethyl Sulfide Lifetime in the Marine Atmosphere....Pages 434-439 Natural and Anthropogenic Hydrocarbons and Halocarbons Over the Atlantic Ocean: Latitudinal Distributions of Mixing Ratios and Sources....Pages 440-450 Characterization of Cloud and Rain Water Chemical Composition....Pages 451-459 Deposition Measurements in Sweden....Pages 460-469 Measurements of the Dry Deposition Rates of Some Trace Gas Species....Pages 470-479 Contribution of Ammonia to the Wet Deposition of Sulfur Compounds....Pages 480-488 Impact des Poussieres Sahariennes sur L’Acidite des Pluies dans L’Atmosphere Mediterraneenne/Impact of Saharan Dust on the Rain Acidity in the Mediterranean Atmosphere....Pages 489-499 Acid deposition in a snow field at 2500 m.a.s.l. in Switzerland....Pages 500-510 Acidity Measurements of Snowfalls Collected Over the Vosges in Relation to Air Mass Trajectories....Pages 511-519 Nitrate and Sulphate Wet Deposition in Europe....Pages 520-528 Seasonal and Daily Variations of Ozone, Sulpur Dioxide and Nitrous Gases and the Photochemical Production and Reactions with Other Trace Gases of the Ozone....Pages 529-538 A Wet-Only Precipitation Study in a Mediterranean Site, Patras, Greece....Pages 539-545 Oxidant Data Collection in OECD-Europe 1985–87 (Oxidate): A Co-Operative Project for Rapid Exchange of Regional Data on Ozone, Nitrogen Dioxide and Pan....Pages 546-550 Front Matter....Pages 419-420 Daily Trends of Photochemical Oxidants and Their Precursors in a Suburban Forested Area. A Useful Approach for Evaluating the Relative Contributions of Natural and Anthropogenic Hydrocarbons to the Photochemical Smog Formation in Rural Areas in Italy....Pages 551-559 Observations of Nitrous Acid at Roof and Street Level During Air Pollution Episodes in Gothenburg....Pages 560-570 Speciation of Ionic Organolead Compounds in the Biosphere....Pages 571-578 Preliminary Results on Fog Deposition....Pages 579-587 Determination, by Pah Analysis, of the Age of Air Mass Contamination in a Area Remote from Sources of Pollution....Pages 588-592 Aircraft Measurements of Various Sulfur Compounds in a Marine and Continental Environment....Pages 596-603 Flux D’Azote Inorganique Dissous D’Origine Atmospherique en Systeme Littoral D’Europe Occidentale....Pages 604-613 Meso-Meteorological Analysis of Air Pollution Cycles in Spain....Pages 614-626 Front Matter....Pages 627-628 Summary by the Chairman....Pages 629-631 Model Calculations of Long-Term Changes in Atmospheric Hydroxyl, Hydrogen Peroxide and Ozone From Changes in the Emissions of Nitrogen Oxides and Methane....Pages 633-643 A Mass Balance of SO 2 Over Baden-Württemberg During the Tulla Experiment....Pages 644-649 Mesoscale Modeling of Nitric Acid Generation in Night-Time Moist Atmosphere....Pages 650-655 Long Range Modelling of the Formation Transport and Deposition of Photochemical Oxidants and Acidifying Pollutants....Pages 656-666 Analysis of an Acid Deposition Episode and Preparation of Meteorological Input Data for an Eulerian Longrange Transport and Deposition Model....Pages 667-676 Physico-Chemical Properties of Radiation Fog in the Po Valley, Italy....Pages 677-684 Air Sampling Flights at Low Altitudes Along the Border Between the Federal Republic of Germany and its Neighbours....Pages 685-703 The Oxidation of Sulphur Dioxide in the Aqueous Phase in Plumes....Pages 704-714 Monte-Carlo Methods for Simulating Diffusion in the Atmospheric Boundary Layer....Pages 715-724 Modelling of Lagrangian Turbulent Dispersion of Neutral and Buoyant Pollutants Released in the Atmospheric Boundary Layer....Pages 725-734 A Three-Dimensional Mathematical Model of Dispersion in Turbulent Shear Flow....Pages 735-743 Front Matter....Pages 627-628 The Rapid Rotation of the Wind Direction and Sharp Ozone Peak Features....Pages 744-747 Local Scale Plume Model for Nitrogen Oxides - Comparison with Measurements....Pages 748-757 High Pan Concentrations During Non-Summer Periods : A Study of Two Episodes in Creteil (Paris) - France....Pages 758-764 Verification of the Pollutant Transport Model ‘MODIS’ using EPRI Plains Site Data from a tall Stack....Pages 765-772 Long-Range Transport of Nitrogen and Sulphur Compounds....Pages 773-783 Modelisation De La Chimie D’Un Panache....Pages 784-793 Echantillonnage et Mesures Sequentiels de Pluies : Conception D’Un Appareil Equipe D’Un Automate Programmable (SAPSEP)....Pages 794-798 Back Matter....Pages 799-809