The growth in our understanding of the production, transformation and loss of pollutants and trace substances in the atmosphere has followed closely the development of instrumentation for both in situ and remote measurements of the minute concentrations and fluxes of trace substances. In recent times the requirement has been for instruments which have a fast response, are chemically specific, and sensitive enough to detect small changes in concentrations at ppb and ppt levels. This book gives an account of such techniques. Each technique is reviewed and then the results of a number of detailed studies are presented. The book is Volume 8 of the series on Transport and Chemical Transformation of Pollutants in the Troposphere.
