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Bonmatin, JM ; Marchand, PA ; Charvet, R ; Moineau, I ; Bengsch, ER ; Colin, ME

Quantification of imidacloprid uptake in maize crops

Journal of Agricultural and Food Chemistry 53 (13) 5336-5341

par Administrateur - publié le

Abstract :

The systemic imidacloprid is one of the most used insecticides in the world for field and horticultural crops. This neurotoxicant is often used as seed-dressing, especially for maize, sunflower, and rape. Using a LC/MS/MS technique (LOQ = 1 mu g/kg and LOD = 0.1 mu g/kg), the presence of imidacloprid has been measured in maize from field samples at the time of pollen shed, from less than 0.1 mu g/kg up to 33.6 mu g/kg. Numerous random samples were collected throughout France from 2000 to 2003. The average levels of imidacloprid measured are 4.1 mu g/kg in stems and leaves, 6.6 mu g/kg in male flowers (panicles), and 2.1 mu g/kg in pollen.