O-334 Measuring French Farmers’ Exposure to Fungicides During the Sowing of Coated Seeds of Corn and Straw Cereals (Wheat and Barley)

Introduction Occupational use of pesticides is responsible for health effects and improvement of prevention needs to better define exposing tasks and associated exposure levels. In agriculture, exposure during the handling of pesticide-coated seeds is unknown. Methods 35 volunteer farmers were monitored during the sowing of coated cereals. Fludioxonil and prothioconazole fungicides were quantified by HPLC MS/MS in patches representing 11 body zones, placed under and over the clothing, in order to estimate potential and actual dermal exposure. XAD-2 filter was added for the respiratory route. Results 90% of measurements were over the limit of quantification (> 0,015 µg) and revealed large interindividual variations. Dermal exposure levels were higher at preparation of the seeder than after sowing in the field. During preparation of corn sowing, wearing gloves decreased exposure, while rolling empty seeds bags on the thighs increased it. For straw cereals, the filling time, emptying or adjustment of the seeder increased dermal exposure too. In the field, strongest exposures concerned operators who regularly got off of the tractor and/or kept the cabin closed. Respiratory route was generally far lower. Discussion For the first time, a low but systematic dermal exposure during sowing is highlighted. Measured levels remain below other activities such as pesticide application. However, as sowing is repeated over a season time, cumulative exposures have to be more considered. Conclusion Contrary to what is generally accepted, sowing with coated seeds exposes operators to pesticides. First identified determinants would be good levers for prevention.