1. a Field Experimental Station in Torun , Pesticide Residue Laboratory , Plant Protection Institute in Poznan , 73 Zwirki i Wigury St., Torun, 87-100, Poland
2. b Department of Environmental Chemistry and Ecoanalytics , Faculty of Chemistry , Nicholaus Copernicus University , 7 Gagarin St., Torun, 87-100, Poland