Air Pollution Monitoring
There is a huge range of atmospheric pollutants and for a given pollutant there may be several commercially available detection systems. In a document of this size, it is clearly not feasible to discuss in detail the theory of operation of every possible system. After some general remarks about air pollution monitoring, a broad introduction to the physics of molecular spectroscopy (the most widely used detection principle) will be presented. The detection of individual pollutants will then be discussed. Most of the practical examples given will refer to British experience, since this reflects the author’s background. The principles involved, however, are universally applicable. The EPA’s website (Table 77.3) provides an useful gateway to American legislation and practice.