NDLI: Residue analysis of organochlorine pesticides in water and sediments from Agboyi Creek , Lagos Akan

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Residue analysis of organochlorine pesticides in water and sediments from Agboyi Creek , Lagos Akan

Content Provider	Semantic Scholar
Copyright Year	2013
Abstract	Microlayer water, mixed layer water, epipellic and benthic sediments were collected from Agboyi Creek, Lagos to analyse organochlorine pesticide residues. Sampling was conducted between December 2008 and September 2009 during the dry and wet seasons to study effects of seasonal variation on the samples. Water samples were subjected to liquid-liquid extraction using dichloromethane, while sediments were subjected to cold extraction with petroleum ether/acetone (1:1 v/v) mixture and cleanup on silica gel adsorbents. The samples were analyzed for aldrin, dieldrin, endrin, DDT, heptachlor, HCH, endosulfan, chlordane and methoxychlor. The detection and determination of the pesticide residues were performed by injecting 1 μL of purified extract into the injection port of a gas chromatograph with a 63 Ni electron capture detector (GC-μECD Agilent 7890A) equipped with ChemStation software. Pesticide residues in the epipellic and benthic sediments were higher than the residues in the water. The mixed layer water showed enhanced levels of residues when compared with the microlayer water. The residue levels were higher during the dry season than the wet season. The levels of residues in the water and sediments were below the maximum permissive residue limits.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://covenantuniversity.edu.ng/content/download/20756/132898/file/AJEST.pdf
Language	English
Access Restriction	Open
Subject Keyword	1:1 pixel mapping Acetone Agilent ChemStation Aldrin Biological Community Chlordan Detectors Dieldrin Electron Emoticon Endosulfan Endrin Heptachlor Hypochondroplasia (disorder) Injection Port Lagos bat virus Liquid-Liquid Extraction Methoxychlor Open Core Protocol Pesticide & Insecticide panel:MCnc:Pt:Urine:Qn Pesticide Residues Pesticides Polychlorinated Biphenyls Printed circuit board Seasonality Silica Gel Silicon Dioxide Volume fraction methylene chloride naphtha nickel
Content Type	Text
Resource Type	Article

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