Characterization of Organic Compounds in Compost-Amended Soil |
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Authors: | A. A. Olajire E. T. Ayodele F. E. Imeokparia |
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Affiliation: | (1) Department of Analytical Chemistry, University of Seville, C/ Virgen de ?frica 7, 41011 Seville, Spain; |
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Abstract: | Samples of compost-amended soil from waste dumping sites in Lagos Metropolis were extracted with dichloromethane (3 × 20 cm3) and the extract was evaporated at 35 °>C. The residue was extracted with 2,2,4-trimethylpentane, and portions of the solution were applied to a column containing silica gel from which aliphatic and aromatic hydrocarbons were eluted with n-hexane and toluene respectively. Analysis of the n-hexane fraction using gas chromatography showed the presence of a mixture of aliphatic hydrocarbons, ranging from C9 to C25, while ultraviolet analysis of the toluene fraction suggested 1,2-benzanthracene; 2,3-benzphenanthrene, chrysene and pyrene as polyaromatic compounds present in samples analyzed. The crude extracts were highly coloured and viscous. Total extractable organic residues in the 2,2,4-trimethylpentane extracts ranged from 36 to 89 mg g-1 of soil. |
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Keywords: | gas chromatography and ultraviolet spectroscopy organic compounds soil |
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