DSpace

Benue State University Institutional Repository

 

Benue State University Institutional Repository >
Faculty of Science >
Chemistry >

Please use this identifier to cite or link to this item: http://bsuir.bsum.edu.ng:8080/jspui/handle/11409/577

Title: DETERMINATION OF SELECTED PESTICIDE RESIDUES IN SOME FOODSTUFFS SOLD IN FOUR MARKETS IN MAKURDI METROPOLIS BENUE STATE NIGERIA USING GAS CHROMATOGRAPHY-MASS SPECTROMETRY
Authors: OGBOLE, CHRISTIANA AGBENU
Keywords: PESTICIDE RESIDUES
FOODSTUFF
Issue Date: Nov-2019
Publisher: NONE
Citation: NONE
Abstract: Residues of dichlorvos and organochlorine pesticides were determined in Oryza sativa, Glycine max, Vigna unguiculata, Zea mays (White and Yellow) samples purchased from four markets (Modern, Wadata, Wurukum and Northbank) in Makurdi metropolis, using gas chromatography mass spectrometric technique following solvent extraction. The residues of organochlorine pesticides were detected in all (100 percent) of the food samples at varying concentrations ranging from heptachlor epoxide not detected to endrin aldehyde concentration in Oryza sativa. The concentration of endrin aldehyde was highest in Oryza sativa with range from 7.17 (MMR1) – 13.34 mg/kg (NBMR1). The concentration of endosulfan I was highest in Glycine max with range from 0.11 (MSB1) - 15.08 mg/kg (NBSB1). Endrin aldehyde concentration was highest in Vigna unguiculata with range from 3.01 (NBWB1) - 7.15 mg/kg (WKWB1). γ – HCH concentration was highest in Zea mays (white corn) with range from 0.20 (WWC1) – 2.77 mg/kg (NBWC1) and endosulfan I concentration was highest in Zea mays (Yellow corn) with range from 0.57 (NBYC1) - 1.16 mg/kg (WKYC1) from the first sampling. The determined concentrations exceeded the Maximum Residues Limits (MRL) set by World Health Organisation (WHO) and Food and Agricultural Organisation (FAO). The concentration of organochlorine pesticides in the food samples investigated across the markets from the second visit show endrin aldehyde concentration was highest in Oryza sativa with range from 2.37 (WMR2) – 5.63 mg/kg (MMR2). Also, endrin aldehyde concentration was highest in Glycine max with range from 2.73 (NBSB2) – 8.80 mg/kg (WSB2). The concentration of endrin aldehyde was highest in Vigna unguiculata with range from 3.80 (MWB2) – 4.78 mg/kg (NBWB2). The concentration of endrin aldehyde in Zea mays (white corn) ranges from 2.46 (WKWC2) - 4.78 mg/kg (MWC2). Endrin ketone concentration was highest in Zea mays (Yellow corn) with range from 0.72 (WCYC2) - 1.24 mg/kg (NBYC2). These concentrations were above the set limits. The concentration of dichlorvos in Oryza sativa range from 0.01 (WMR2) - 0.02 mg/kg (NBMR2). The concentration of dichlorvos in Glycine max range from 0.01 (NBSB1) – 0.05 (WSB2). Dichlorvos concentration in Vigna unguiculata range from 0.01 (WWB1) - 0.06 (WWB2). Dichlorvos concentration in Zea mays (white corn) range from 0.01 (WWC1) – 0.04 mg/kg (MWC2) while, dichlorvos concentration in Zea mays (Yellow corn) range from 0.001 (NBYC2) – 0.02 mg/kg (WKYC2). Only the dichlorvos concentration in NBYC2 was below the MRLs (0.01 mg/kg). The concentration of the OCPs and dichlorvos from the two visits were not significantly different (p 0.05). There is need for the Federal Government to review the policy and mandate of the regulatory body in Nigeria, National Agency for Food and Drug Administration (NAFDAC) to include screening and certification of all foods before allowed into the markets.
URI: http://bsuir.bsum.edu.ng:8080/jspui/handle/11409/577
Appears in Collections:Chemistry

Files in This Item:

File Description SizeFormat
Dr. Mrs. Christie PHD Thesis.pdf4.48 MBAdobe PDFView/Open
View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback