Fig. 3
Amount of insecticide (i.e. the exposure dose) measured on honeybees exposed to different streams of seed-coating dusts, characterized by different concentration of particles. The emitted mass represents the total amount of insecticide produced in each exposure experiment and collected on the filter placed at the end of the exposure chamber. It was calculated as insecticide concentration (µg/m3) · airflow (m3/min) · exposure time of the honeybees (min). Significant linear relationships (dose vs emitted amount) were obtained for all insecticides (F test, p < 0.0001)