Abstract
Studies on the air concentration of the pesticide aerosol and its acute effects on the farm worker were done ; that is, the air concentration of spread ZINEB (Zinc ethylene-bisdithiocarbamate) in a vinyl greenhouse was determinated, and blood, urine of the operator and suboperator were tested serially.Results1) The maximum air concentration on spraying was 0.32mg/me ; and the concentration at 30min. after spraying was reduced to half. This was true for the time of ventilation working of facilities. That of the harvest time was about ten times compared with that of the growth time.2) R.M.R. during spraying was 1.5-1.8 (operator) and 0.4-1.4 (suboperator). Inhalation of the pesticide was calculated at 0.27mg when R.M.R. was 1.8 ; air inhalation per minute was 15 ; spraying time was 60min.; and air concentration of the pesticide was 0.3mg/ms. This volume was not important compared with LD50 of ZINEB (=orally in mice: 686.3mg/kg).3) Liver function data, blood and urine tests of the operator and suboperator were not significant compared with those at the end of spraying or an hour after spraying.
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