DETERMINATION OF DERMAL BYSTANDER EXPOSURE OF MALATHION FOR DIFFERENT APPLICATION TECHNIQUES


BOZDOĞAN A. M. , Yarpuz-Bozdogan N.

FRESENIUS ENVIRONMENTAL BULLETIN, cilt.17, ss.2103-2108, 2008 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 17
  • Basım Tarihi: 2008
  • Dergi Adı: FRESENIUS ENVIRONMENTAL BULLETIN
  • Sayfa Sayısı: ss.2103-2108

Özet

In pesticide applications, pesticide deposition on environment. human and other organisms. can be reduced by using appropriate pesticides through the application of appropriate application technique. Hollow cone nozzles (HC), air-assisted spinning cage nozzles (ASC), and flat fan nozzles (F) were used in the trials. Malathion was applied as 0.760 kg a.i. per ha in the trials. The dermal bystander exposure was measured using the whole body dosimetry technique. In the trials, the total body area of the bystander overall was approximately 2 m(2). All chromatographic analysis was performed on a Gas Chromatography-Nitrogen Phosphorus Detector (GC-NPD). Totally, the highest dermal deposition was obtained as 12.850 mu g kg(-1) in flat fan nozzles (F). and was found to be 2.09 - 3.22 folds higher than in hollow cone (HC) and air-assisted spinning cage (ASC) nozzles. Apart from lower left leg (LLL), pesticide deposition found in each one of the body parts in F nozzles was higher than ASC and HC-nozzles. The lowest bystander exposure during malathion application was measured in ASC nozzles 3.995 mu g kg(-1). It was shown that. in this study, the total bystander exposure during malathion application in bed-grown crops such as strawberries can be reduced by 1.5-3.2 orders of magnitude using ASC nozzles with air-assistance.