Aerosol measurement: principles, techniques, and applications. Willeke K, Baron PA, eds. New York: Van Nostrand Reinhold, 1993 Jan; :537-559
Industrial hygiene is both a science and an art. Industrial Hygiene encompasses the total realm of control, including the recognition and evaluation of those factors of the environment emanating from the place of work which may cause illness, lack of well being, or discomfort either among workers or among the community as a whole. In short, industrial hygiene can be defined as the identification, evaluation, and control of occupational health hazards. Industrial hygiene aerosol sampling differs from general aerosol measurements in several ways. First, in evaluating the industrial environment, the aerosol contaminant is almost always known, or it can be deduced from a knowledge of the process or product in use. Only in limited cases is the sampling performed to identify an unknown contaminant. Second, industrial hygiene sampling today is mainly performed by the use of portable, battery-operated air sampling equipment. This equipment is usually worn by the worker for the duration of the work shift to define the exposure of that individual. This is known as personal breathing zone air sampling. The personal breathing zone is that air that would most nearly represent the air inhaled by the worker and is usually considered to be either less than about 30 cm from the workers mouth or a distance of four to six feet from the floor. Lastly, the concentrations encountered in industrial hygiene are usually higher than those encountered in community air sampling but much lower than that potentially present in monitoring the effluent of a stack or other process vent.