An Evaluation of Selected Methods of Collection and Analysis of Low Concentrations of Ozone

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Abstract
Seven analytical methods for ozone are evaluated. Equipment used for generating the ozone is discussed. Information concerning methods of collection of ozone is presented. Potassium iodide, phenolphthalein, sodium diphenylamine sulfonate, and fluorescein methods are either nonspecific for ozone or lack sensitivity. The dimethoxystilbene method, in our hands, lacked sensitivity and posed reagent difficulties. The NO2-equivalent method is an excellent research procedure and is the method of choice for field investigations where fluctuating NO, concentrations are not encountered. The rubber-cracking procedure is empirical, but, as an indicator method, its speed, specificity, and simplicity make this procedure attractive to the industrial hygienist, especially for preliminary surveys.

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