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ARPN Journal of Science and Technology >> Volume 4, Issue 6, June 2014

ARPN Journal of Science and Technology


Pesticide Residues in Bean Samples from Northeastern Nigeria

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Author Obida M. Gwary, Stephen S. Hati, Goni A. Dimari, Victor O. Ogugbuaja
ISSN 2225-7217
On Pages 79-84
Volume No. 2
Issue No. 2
Issue Date April 01, 2012
Publishing Date April 01, 2012
Keywords phaseolus vulgaris, multi-residue, GC-MS, borno state.



Abstract

A study was conducted to measure residues of pesticides in samples of Beans (Phaseolus vulgaris) collected in both field and storage facilities in six local area councils of Borno State, northeast Nigeria. Multi-residue pesticide analysis technique consisting of the QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) sample preparation and GC-MS detection was employed. Method validation for this study maintained a RSD 13% and percentage recoveries were in the range of 80-110%. Results show that out of the residues of eight analytes determined, three analytes (Dichlorvos, Endrin and DDT) were detected in both field samples (Pre Storage) and stored sample (post harvest). Another set of three analytes (Lindane, Diazinon and Aldrin) were only detected in the pre storage samples, while the remaining two analytes (Carbofuran and Dieldrin) were not detected at all. In general, the concentrations of these analytes in the bean samples are in the order: Endrin > DDT > Dichlorvos. The study observed that Dichlorvos was mainly utilized in storage of beans from insect attack and suggested that stringent monitoring of use of pesticides in agriculture and food storage in Nigeria is required.


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