TITLE:
Analysis of Selected Pesticide Residues and Heavy Metals in Honey Obtained from Plateau State, Nigeria
AUTHORS:
Gunat J. Lekduhur, Peter O. Onuwa, Ishaq S. Eneji, Sha’Ato Rufus
KEYWORDS:
Atrazine, Bioaccumulation, Cypermethrin, Heavy Metals, Honey, Plateau State
JOURNAL NAME:
Journal of Analytical Sciences, Methods and Instrumentation,
Vol.11 No.1,
March
31,
2021
ABSTRACT:
Honey bees derive their nutrients from nectars and
other plant materials. These naturally available materials are affected by the
residual presence of pesticides. The concentration of pesticides in honey comb
then reflects the leftover after degradation. In this study, samples of honey
were collected from five different farms in Plateau State and analyzed for
pesticide residues (atrazine, cypermethrin) and heavy metals (Pb, Cd, Cr, Fe
and Mn) using GC-MS and AAS techniques. Results of the analysis indicated that
atrazine and cypermethrin were found in the range (0.01 - 0.36 and 0.11 - 0.26)
mg/kg, respectively in all the samples. Mn and Fe were found across the samples
while Cd was detected only in the sample obtained from Maraban Jos (0.0013
mg/kg). Except Bokkos and Maraban Jos, Pb was detected in other samples. This
study revealed that all samples contained the selected pesticide residues above
the maximum residue limits recommended by European Union, while concentration
of heavy metals in all the samples except Mn was below the maximum
concentration limits recommended by Food and Agriculture Organization. The high
concentration of pesticide residues in the samples indicates contaminated
environment in which the bees fed; therefore intermittent monitoring of the
quality of honeys produced would be necessary as this calls for urgent
attention.