Detection system development of Xenobiotics compounds in waste water. Priority pollutants extraction by several solid phases
Chemical characterization of complex effluents involves special problems. In order to solve these problems, synergism between chemical and biological techniques is required. The compatibility of both is difficult, because most of organic solvent, and its evaporation residues, exhibits high toxicity. A completely toxicological assessment of an unknown sample is required to avoid this problem. According to this situation, this study focused on developing optimal evaporation conditions, to minimize the toxicity of organic evaporation residues, quantifying loses of most volatile toxics. In order to perform SPE procedures and to develop a standard operational procedure to chemical and biological assessment of waste water samples, several stationary phases (tC18 OASIS, Amberlite XAD-4) were studied. Validation procedures were performed using six toxics (Naphthalene, Anthracene, 3,4,dichloroaniline, Fenthion, benzo(a) pyrene and 2,4-dichlorophenol) covering a broad range of physic-chemical properties. Similar vehaviour was showed by tC18 and OASIS cartridges. The higher capacity and the interaction with organic polar compounds, sugest an attractive alternative to traditional alkylsilica based SPE cartridges for the analysis of aqueous samples for organic pollutants. On the other hand, XAD resins can generally be reused several times, making them an economical choice, especially if one takes into consideration the cost of bonded-phase cartridges.
| Auteurs principaux: | , , , |
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| Format: | journal article biblioteca |
| Langue: | eng |
| Publié: |
1999
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| Accès en ligne: | http://hdl.handle.net/20.500.12792/1317 |
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