This book contains the combined papers from a NATO sponsored meeting entitled "Mobile Source Emissions Including Polycyclic Organic Species". This meeting was held in Liege, Belgium, from August 30 to September 2, 1982, as an Advanced Research Workshop (ARW). Specialists from 13 countries met to discuss the impacts of fuel type and engine operation on emissions from gasoline and diesel-powered vehicles. The meeting was organized into five sessions: basic studies, biological activity, analytical methods, data bases, engineering and international research programs. The five sessions were each followed by intensive discussions on the important conclusions to be drawn from the data presented. From these session discussions, subcommittee efforts and a final group discussion on all the research results presented, a meeting summary was prepared by the editors that presents the major findings of the conference and gives detailed recommendations for future research. This summary is included at the end of the book. The summary i"nc1udes highlights of data presented, areas of research needs, recommendations for standardization of test parameters and species analyzed, suggested new methodology for characterizing mobile emissions, trends in fuel use including diesel, gasoline, anti-knock additives and blending agents, operation of catalysts, control strategies, implications from both in vivo and in vitro health effects studies, and a presenta­ tion of the scopeiand direction of several large international programs that are major studies of mobile source performance.

Catalytic Control of Motor Vehicle Exhaust Emissions.- Polycyclic Organic Matter in the Atmosphere, POM Concentrations in the Netherlands.- PAH Content of Exhaust Gases from Fuels with Different Aromatic Fraction.- The Aromatic Sextet.- Effect of Lead Antiknock Regulations on Gasoline Aromatics and Aromatic Exhaust Emissions.- The Toxicology of Polycyclic Organic Matter from Exhaust Gases.- Automotive Lead Traps: Potential under Canadian Conditions.- Carcinogenic Impact from Automobile Exhaust Condensate and the Dependence of the PAH-Profile on Various Parameters.- Recent Advances in Epa'S Monitoring and Methods Development Research.- Standardisation Aspects in PAH/POM Analysis.- Public Health Aspects of Polyaromatic Hydrocarbons (PAH) in Belgium and Reflections on the Problem Related to the PAH in Exhaust Gases.- The PAH-Emission of Spark Ignition Engines.- Evaluation of Motor Vehicle and other Combustion Emissions using Short-Term Genetic Bioassays.- Passenger Car PAH Emissions as a Function of Engine Displacement, Fuel, and Driving Cycle.- Actions of the European Communities in the Domain of Air Pollution Caused by Hydrocarbons.- Comparison of NITRO-Aromatic Content and Direct-Acting Mutagenicity of Passenger Car Engine Emissions.- The Influence of Fuel Composition on PAH-Emission a Methodical Consideration.- Environmental Carcinogens - Selected Methods of Analysis: Iarc Manual Series including POM Measurements.- Biologically Active NITRO-PAH Compounds in Extracts of Diesel Exhaust Particulate.- Vehicle Emission Controls and Energy - the Role of Aromatics and Lead Compounds.- Mechanisms of PAH Formation and Destruction in Flames Relation to Organic Particulate Emissions.- PAH Emission from Various Sources and their Evolution over the Last Decades.- TheIdentification and Potential Sources of Nitrated Polynuclear Aromatic Hydrocarbons (NITRO-PAH) in Diesel Particulate Extracts.- Trends in Transportation Fuels.- Modern PAH-Analysis and Fate of PAH in Air.- The Rational Utilisation of Fuels in Private Transport (Rufit) - Extrapolation to Unleaded Gasoline Case, Report 8/80.- Summary Chapter-NATO Advanced Research Workshop-Mobile Source Emissions including Polycyclic Organic Species.- Author Index.