Determination of some Carbamat and Synthetic Pyrethroid Pesticide Residues in Vegetables and Fruits in Derna Market at Eastem Part of libya

Abstract

In this study, the residuesof commonly used carbamate and pyrethroids pesticides in Libya, (oxamyl,bendiocarb, carbofuran, carbaryl, methomyl, thiocarb, permethrin, deltamethrin, fenvalerate, esfenvalerate , and cypermethrin) in vegetables (tomatoes,cucumber, green pepper, scald, cabbage, lettuce and squash) and fruits (grape,peach, apple and plume) were determined in different seasons (summer 2013,autumn 2013, winter 2014 and spring 2014). HPLC with UV detector was used forquantification, while the quick, easy, cheap, effective, rugged and safe(QUECERS) extraction and purification method was used to isolate the pesticidesfound in samples. The mean recovery ranged between 75-95% with relativestandard deviations ranged between 15%-25%. Results indicated that pesticideresidues were found in some monitored fruits and vegetable samples. In all,93.71% of fruit and vegetable samples analyzed contained no detectable level ofthe monitored pesticides, 2.81% of the samples gave results with levels of pesticideresidues above the MRL, while 4.11% of the samples showed results below theMRL. Carbofuran and oxamyl appear to have health risk associated with themwhile rest of tested pesticides were found to be under safe limit. The resultssuggested that the consumers of the eastern area of Libya are exposed toconcentration of pesticides that may cause chronic diseases correlated withcarbofuran and oxamyl. A future study in a longer period of time would allowobtaining a deeper knowledge about the fulfillment of vegetables and fruitsproduced in Libya with respect to the use of pesticides and their presence inthem