By Alyce Bezman Tarcher (auth.), Alyce Bezman Tarcher M.D. (eds.)

Throughout the area, scientists and the final with environmental disease. half II offers an over­ public are fascinated by the hostile results of view of chemical and actual brokers generally poisonous brokers present in infected air, water, meals, present in infected air, water, foodstuff, and soil. and soil. long ago, recognition has keen on haz­ the matter of unsafe wastes can be mentioned. ards originating within the office. to that end, half III characterizes the body's security opposed to occupational medication has turn into a familiar such publicity. Defenses on the portals of access are and confirmed medical self-discipline. less atten­ mentioned, with emphasis put on the function of tion has been paid to nonoccupational risks. There foodstuff. Detoxication and immunologic security is a growing to be know-how, notwithstanding, of the risks of mechanisms are defined. half IV shows the publicity to poisonous chemical and actual brokers in significance of and offers guide at the the houses, neighborhood, and common setting, approach to together with occupational and environmen­ specifically for the fetus, the newborn, the very younger, tal components within the regimen clinical heritage. The function of the aged, and the chronically in poor health, these such a lot sus­ better susceptibility as an element in an individual's ceptible. Environmental drugs, targeting the reaction to poisonous publicity is discussed.

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The Clean Air Amendments of 1970 authorized the administrator of the United States Environmental Protection Agency to set primary standards and secondary standards. Primary air standards protect the public health; secondary standards protect welfare as measured by the effects of pollution on vegetation, on property, and on visibility. TABLE 2-1. 2S The process of establishing air quality standards is lengthy. As a part of the process, the law requires EPA to prepare a "criteria document" that provides the scientific basis for the standard.

The combination of utilities and processes, are quite varied. Depending on the fuel, industrial sources that burn sulfur-containing coal burning conditions and the facility, particles can be and oil, and smelters that process sulfur-bearing composed of soot, recondensed metal or organic ores, account for most of the SOz emitted in the vapors, and uncombusted mineral residues. Haz- United States. ardous waste sites and the open burning of refuse can be a source. of such pollutants as carbon monCarbon Monoxide Carbon monoxide (CO) is an oxide, nitrogen oxides, hydrocarbons, solvents, vol- odorless, colorless gas emitted during incomplete atile organic chemicals, aldehydes, toxic metals, and combustion.

Since sunlight and temperature stimulate these reactions, peak ozone levels typically are reached during the summer. Both volatile organic compounds and nitrogen oxides are emitted by transportation and industrial sources. Volatile OrganiC Chemicals Volatile organic chemicals (VOC) make up a vast family of chemicals. Many polluting VOC are emitted into the atmosphere by incomplete combustion. Others are released by evaporation. The VOC are well recognized for their role in the formation of photochemical smog.

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