Organochlorine pesticide residues in muscle tissues of Ethmalosa fimbriata and Psettias sebae from Lagos Lagoon, Nigeria.

Williams, Akan B. (2013) Organochlorine pesticide residues in muscle tissues of Ethmalosa fimbriata and Psettias sebae from Lagos Lagoon, Nigeria. International Journal of Academic Research Part A, 5 (1). pp. 166-172.

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Abstract

Bonga fish (Ethmalosa fimbriata) and African Moony (Psettias sebae) were sampled from Lagos Lagoon and analysed for organochlorine pesticide residues namely aldrin, dieldrin, endrin, DDT, heptachlor, HCH, endosulfan, chlordane and methoxychlor. Sampling was conducted between December 2008 and September 2009 during the dry and wet seasons. The muscle tissues of the fishes were subjected to cold extraction with petroleum ether/acetone (1:1 v/v) mixture and clean-up on silica gel adsorbents. Gas chromatography was used to detect and determine the organochlorine pesticide residues. The residue levels were higher in Ethmalosa fimbriata during the dry season while Psettias sebae had higher levels during the wet season. The male fishes accumulated higher organochlorine pesticides than the female fishes. The total detectable organochlorines (wet weight) of the muscle tissues ranged from 5.72 ng/g in female Ethmalosa fimbriata during the wet season to 3005.35 ng/g in male Ethmalosa fimbriata. The dietary surveys indicated a mean value of 40 g/day as the amount of fish consumed daily. Except for endrin and heptachlor, the estimated daily intakes of the organochlorine residues were within the acceptable daily intakes. The concentrations of the residues in the fishes were within the permissible residue limits.

Item Type:	Article
Subjects:	Q Science > QD Chemistry
Divisions:	Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User:	Pst Akan Williams
Date Deposited:	02 Mar 2015 09:11
Last Modified:	02 Mar 2015 09:11
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/3616

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