Effect of storage on the stability on some fungicides and determination of residues in fish

Abstract EN

The present work was carried out to study the persistence of naserzol ( Propiconazole 25 % EC W/V ), nofostar (Dimethomorph 5%WDG W/W) and self (Fludioxonil 25 %WG W/W ).

The stability of active ingredient of the tested fungicide under storage 54 ºC for 14 days and influence direct sun light, monitoring of pesticide residues in fish (gills and muscles) samples in Egypt in three months : June , November and December 2018 from three Governorates (Behera , Gharbia , and Alexandria).

The pesticide residues in the fish muscles, gills, studies fungicides were estimated by HPLC, and GC/Ms.

The active ingredient were propiconazole, dimethomorph and fludioxonil 25.31, 5.03 and10.21 before storage become after storage 54 ºC, 18.65, 4.67 and 7.68 , respectively , at the end experiment the loose percentages were 26.31 , 7.15 and 24.77 % when the fungicides compound previously were stored at 54 ºC for 14 days.

Also, the stability active ingredient before influence sun light 25.07 , 5.03 and 10.21 after influence sun light 22.01, 4.10 and 9.11, respectively .

The highest fungicide in Alexandria Governorate was fludioxonil more than ADI according to FAO in November.

The less than in Gharbia and Behera Governorates were propiconazole and dimethomorph ADI according to FAO in June and December.