Computer modelling as a tool for the exposure assessment of operators using faulty agricultural pesticide spraying equipment.

摘要: Background Faulty but still operating agricultural pesticide sprayers may pose an unacceptable health risk for operators. The computerized models designed to calculate exposure and used as aid in the evaluation further authorisation of plant protection products be applied also assess a operators when faulty are used. Objective To evaluate impact different scenarios on using spraying equipment by means computer modelling. Material methods modelling was performed 15 pesticides (5 insecticides, 7 fungicides 3 herbicides). critical parameter, i.e. toxicological end-point, which assessment based no observable adverse effect level (NOAEL). This enabled estimated under various conditions such concentration product type sprayed crop well number treatments. Computer UK POEM model including determination acceptable operator (AOEL). Thus degree could defined during treatment whether or not personal had been employed individuals. Data obtained from simulated, substitute treatments variously damaged knapsack sprayers. These preparations consisted markers that allowed simulations made, analogous real-life situations, dose dependent fashion. Exposures were according dosimetry 'field' low level, medium high target field crops. Results crops demonstrated exceedance AOEL all simulated cases (100%) irrespective damage if individual protective measures adopted not. For exceedances ranged between 40 - 80% cases. Conclusions considered practical tool hazard It programming quality checks maintenance systems this equipment.