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Publication datasheet
Title:
Aerosol generated during the sowing operations with pneumatic precision drills and operator inhalation exposure
Authors:
Biocca, M.; Brannetti, G.; Grilli, R.; Fanigliulo, R.; Gallo, P.; Cervellini, C.; Fedrizzi, M.; Pulcini, P.; Pochi, D.
Year:
2013
Languages:
ENG, eng
Journal:
From effective to intelligent agriculture and forestry, XXXV CIOSTA & CIGR V International Conference, July 3rd – July 5th, 2013, Billund- Denmark
Kind of publication:
Elettronico
Location:
Editor:
CIOSTA CIGR
Abstract in Italian:
Abstract in English:
Pneumatic drills for sowing of dressed maize seed contribute to generate and disperse abrasion dust containing pesticides. The environment and the operators can be exposed to abrasion dust during the sowing operations. This paper provides the results of tests aimed at assessing the quantity of active ingredients (a.i.) an operator can inhale during the operations requiring dressed maize seed manipulation (such as hoppers’ loading with seed and sowing) and the efficiency of a prototype applied to the drill that operates the reduction of dust emissions through a system combining the partial recirculation and the filtering of the air. The study regarded three neonicotinoids (imidacloprid, clothianidin, thiamethoxam) and fipronil. The tests consisted of air samplings with personal air samplers during hoppers’ filling with dressed seed and on the tractor cab during the sowing. In addition, ambient air samplings were collected in the fields during the sowing. The air concentrations of the different a. i. sampled during hoppers’ loading ranged from 2.86 up to 31.65 ppb, corresponding to potentially inhaled quantities respectively of 33.3 and 392.5 ng min-1. The concentrations sampled on the tractor cab during the sowing ranged from 0.09 up to 8.65 ppb, corresponding to potentially inhaled quantities respectively of 1.1 and 107.2 ng min-1. Such variability depends on different causes such as the different a.i. doses in the dressing and/or, merely, peaks of contamination determined by the great amount of dust dispersed during the operations. As to the prototype efficiency, the levels of concentration in field ranged from values of 0.008 up to 0.223 ppb in average, depending mostly on the presence or not of the prototype. Through the prototype use, we found significant reductions (from 55.3 to 94.4%) of dust dispersion for all the a.i. detected amounts in ambient samplings, whereas similar results were achieved on the tractor samplings in three tests out of four.

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