Photochemical Air Pollutants and Their Effects on Men and Animals

When concentrations of photochemical oxidants are used as measures of photochemical smog intensity, a number of specific biological effects on man and animals based on both atmospheric and laboratory studies have been documented. Photochemical oxidants, such as routinely found in urban communities as measured by continuous air monitoring instruments used by federal, state, and local agencies, cause a repeated and continuing biological impact on man and animals in every region of the country. The degree and types of the documented biological effects are dependent on the local community atmospheric level attained and the frequency of occurrence. 91 references, 2 tables.