Gas chromatographic separation of PCB and OCP by photocatalytic degradation |
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Authors: | S Meral Karakartal S Fatma Aygün A Nur Onar |
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Institution: | Department of Chemistry, Faculty of Science and Art, Ondokuz May?s University, Kurupelit, 55139 Samsun, Turkey |
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Abstract: | A photocatalytic degradation method was developed for polychlorobiphenyl (PCB) and organochloride pesticide (OCP) discrimination and quantification. A mixture of Aroclor 1260 and p,p′-DDT was irradiated at 254 nm by UV lamp (40 W) in the presence of TiO2 (30 mg mL−1 non-aqueous solution). Comparison of gas chromatograms showed that p,p′-DDT signals decreased significantly after irradiation, while Aroclor 1260s chromatograms did not show any difference before and after irradiation. Detection limits were 0.30 mg L−1 and 0.15 mg L−1 for p,p′-DDT and Aroclor 1260, respectively. The method was applied to spiked egg samples, the recoveries were found as 72% for DDT and 82.01% for Aroclor 1260. |
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Keywords: | Polychlorobiphenyls Organochloride pesticides TiO2 Photocatalytic degradation |
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