Assessment Of 2,2-Diclorovinyl Dimethyl Phosphate Content in Selected Phaseolus Vulgaris Samples Sold in Benue State Nigeria

Abstract

The presence of 2,2-Dichlorovinyl dimethyl phosphate (DDVP), popularly called, dichlorvos, in selected dry bean (Phaseolus vulgaris) samples was investigated in order to ascertain the levels of the contaminant in dry beans sold locally in Benue State, Nigeria. The samples were analyzed using gas chromatographymass
spectrometry after the preparation of internal standard containing a mixture of acetone and diethyl pimelate, and 2,2-dichlorovinyl dimethyl phosphate standard. Dichlorvos was present in samples A, B, C and D at levels 3.0 x 10-5, 2.7 x 10-5, 9.0 x 10-6 and 1.6 x 10-5 μg/mL respectively. However, these amounts fell within the safe limits for consumption (0.01 mg/kg, 0.02 – 2 ppm), recommended by the European Food Safety Authority and United States Environmental Protection Agency. The contaminant was not found within the detectable limit of the instrument in samples E and F that were washed before cooking. Although, the contaminant was found below the recommended safe limit, its presence in the studied samples nevertheless, constitute health risk for consumers.