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Assessment of contamination by organochlorine pesticides in Solanum lycopersicum L. and Capsicum annuum L.: A market survey in Nigeria

Benson, N. U. and Olanrewaju, I. O. (2011) Assessment of contamination by organochlorine pesticides in Solanum lycopersicum L. and Capsicum annuum L.: A market survey in Nigeria. African Journal of Environmental Science and Technology, 5 (6). pp. 437-442. ISSN 1996-0786

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Abstract

This study investigated the presence and levels of organochlorine pesticides (OCPs) (hexachlorobenzene (HCB), α‑, β‑, δ‑, and γ‑hexachlorohexane (HCH), dieldrin, dichloro-diphenyltrichloroethane (p,p’-DDT), dichloro-diphenyl-dichloroethylene (p,p’-DDE), dichloro diphenyldichloroethane (p,p’-DDD) and trans-nonachlor) in Solanum lycopersicum and Capsicum annuum samples commercially sold in Nigeria. OCPs were detected in all the samples analysed using Hewlett- Packard (HP 6890) gas chromatograph equipped with electron capture detector (GC-ECD). In S. lycopersicum, the total residue concentrations of ΣHCH (0.140 mg/kg), ΣHCB (0.144 mg/kg), ΣDDT (0.572 mg/kg), Σdieldrin (0.073 mg/kg), and Σtrans-nonachlor (0.117 mg/kg) were found. In C. annuum, the total residue levels of HCH, HCB, DDT, dieldrin and trans-nonachlor measured were 7.220, 0.096, 0.275, 0.037 and 0.117 mg/kg respectively. The α‑HCH isomer was not detected in S. lycopersicum and p,p’-DDD found only in C. annuum samples. The OCPs levels were generally below the FAOs maximum residue limits except for HCH and trans-nonachlor. A pair-wise linear correlations among concentrations of OCPs in S. lycopersicum samples indicated statistically significant (P = 0.05) relations between δ‑HCH and dieldrin (r = -0.997, P = 0.047), dieldrin and HCB (r = 0.99, P = 0.043), p,p’-DDD and p,p’-DDT (r = 1.00, P = 0.006).

Item Type: Article
Uncontrolled Keywords: Organochlorine pesticides, Solanum lycopersicum, Capsicum annuum, vegetables, gas chromatography
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User: Mrs. I. O. Olanrewaju
Date Deposited: 31 Mar 2015 17:53
Last Modified: 01 Sep 2017 08:06
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/4498

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