Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Screening organic micropollutants in surface waters by SPE extraction and ecotoxicological testing |
| Abstract | Complex mixtures of toxic substances occurring in surface waters are difficult to characterise by chemical analyses because each compound occurs at a very low concentration and requires a specific analytical method to be identified. Ecotoxicological tests on water extracts can be used as a screening tool to evaluate quickly and simply the overall quality of a water body with regard to micropollutant contamination. In this work, a pre-concentration procedure based on solid-phase extraction (SPE), suitable for both biological testing and analytical determination, is proposed. The extraction procedure is an improved version of a methodology used to evaluate the toxicity of organic micropollutants occurring in surface waters. It offers the advantage of using disposable commercial cartridges, which are easier to manage than the columns prepared with macromolecular resins. Water extracts from two representative Italian rivers, characterised by a different gradient of potential contamination and prepared according to the new concentration techniques, are used. The acute toxicity of the water extracts is tested on Daphnia magna and the bioluminescence inhibition in Vibrio fischeri. Criteria based on the concentration factor (CF) are proposed for assessing the hazard to aquatic life due to the exposure to toxic substances in surface waters. The aim of hazard ranking is to focus analytical efforts towards those samples that show the highest toxic potential. © 2003 Elsevier Ltd. All rights reserved. |
| Source | Chemosphere 54 (11), pp. 1619–1624 |
| Keywords | Daphnia magnaMicropollutantsPre-concentrationSurface watersVibrio fischeri |
| Journal | Chemosphere |
| Editor | Elsevier, Oxford, Regno Unito |
| Year | 2004 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.chemosphere.2003.09.028 |
| Authors | Galassi, Silvana; Guzzella, Licia; Croce, Valeria |
| Text | 339357 2004 10.1016/j.chemosphere.2003.09.028 Scopus 2 s2.0 0742324406 Daphnia magna Micropollutants Pre concentration Surface waters Vibrio fischeri Screening organic micropollutants in surface waters by SPE extraction and ecotoxicological testing Galassi, Silvana; Guzzella, Licia; Croce, Valeria Universita degli Studi dell Insubria; Istituto di Ricerca sulle Acque, Italy Complex mixtures of toxic substances occurring in surface waters are difficult to characterise by chemical analyses because each compound occurs at a very low concentration and requires a specific analytical method to be identified. Ecotoxicological tests on water extracts can be used as a screening tool to evaluate quickly and simply the overall quality of a water body with regard to micropollutant contamination. In this work, a pre concentration procedure based on solid phase extraction SPE , suitable for both biological testing and analytical determination, is proposed. The extraction procedure is an improved version of a methodology used to evaluate the toxicity of organic micropollutants occurring in surface waters. It offers the advantage of using disposable commercial cartridges, which are easier to manage than the columns prepared with macromolecular resins. Water extracts from two representative Italian rivers, characterised by a different gradient of potential contamination and prepared according to the new concentration techniques, are used. The acute toxicity of the water extracts is tested on Daphnia magna and the bioluminescence inhibition in Vibrio fischeri. Criteria based on the concentration factor CF are proposed for assessing the hazard to aquatic life due to the exposure to toxic substances in surface waters. The aim of hazard ranking is to focus analytical efforts towards those samples that show the highest toxic potential. © 2003 Elsevier Ltd. All rights reserved. 54 Published version http //www.scopus.com/record/display.url eid=2 s2.0 0742324406 origin=inward Articolo in rivista Elsevier 0045 6535 Chemosphere Chemosphere Chemosphere Chemosphere. Chemosphere. Environmental chemistry, Chemosphere. Persistent organic pollutants and dioxins, Chemosphere. Environmental toxicology and risk assessment, Chemosphere. Science for Environmental toxicology, liciamaria.guzzella GUZZELLA LICIA MARIA |