Studies on the Evaluation Method of Respiratory Exposure to Pesticide Spray / 日本農村医学会雑誌

ABSTRACT

A filter pad-one respirator-per man measuring system (Filter pad system) has been devised as a method to evaluate the respiratory exposure to pesticide spray. This method was compared with a conventional method and results are as follows ;<BR>1. Experiments to test the filter's efficiency in collecting both dust and mist pesticides demonstrated a high collecting efficiency level within the range of a simulated air flow, inhalation time, air concentration similar to actual working conditions. These materials thus appear to be sufficiently useful in evaluating the respiratory exposure to pesticide spray.<BR>2. The experiments using the filter pad evaluation method (Filter pad method) of collecting sprayed pesticides and the experiments measuring the respiratory exposure to pesticides by employing the impinger tube evaluation method (Impinger method), resulted in the obtainment of a correlation between the two. The results from evaluating the respiratory exposure to pesticides by workers during spray work employing both methods, the Filter pad system and Impinger system (impinger-one respirator-per man measuring system) also gave values of similar levels.<BR>3. When compared, Filter pad system has several advantages over the Impinger system. It is a more desirable Filter pad system in evaluating the respiratory exposure to pesticides by spraying wokers.