Determination of polychlorinated dibenzofurans in surface water by means of liquid chromatography using on-line sample preconcentration and different spectroscopic detection techniques |
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| Institution: | 1. Department of Biomedical Engineering, University of Arizona, Tucson, AZ, United States;2. Assistant Professor, Department of Biomedical Engineering, BIO5 Institute, Department of Electrical Engineering, University of Arizona, Tucson, AZ, United States;1. School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, China;2. WA School of Mines: Minerals, Energy and Chemical Engineering (WASM-MECE), Curtin University, Perth, WA 6102, Australia;3. School of Engineering, Edith Cowan University, Joondalup, WA 6027, Australia;4. School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia |
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| Abstract: | Three different spectroscopic techniques, UV absorbance, fluorescence and sensitized room temperature phosphorescence are examined for the detection of polychlorinated dibenzofurans. A pre-column enrichment step is used prior to reversed-phase liquid chromatographic separation. The fluorescence detection mode offers the best sensitivity and selectivity but UV detection in combination with pre-column technology provides also a powerful means for trace analysis of the dibenzofurans. The method presented allows the determination of ppt-ppb concentration levels in polluted surface waters with good recoveries and reproducibility. |
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