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Determination of priority carcinogenic polycyclic aromatic hydrocarbons in wastewater and surface water by coacervative extraction and liquid chromatography-fluorimetry
dc.contributor.author | Ballesteros-Gómez, A. | |
dc.contributor.author | Rubio Bravo, Soledad | |
dc.contributor.author | Pérez-Bendito, Dolores | |
dc.date.accessioned | 2023-12-19T07:38:42Z | |
dc.date.available | 2023-12-19T07:38:42Z | |
dc.date.issued | 2008 | |
dc.identifier.uri | http://hdl.handle.net/10396/26382 | |
dc.description.abstract | The US Environmental Protection Agency (EPA) and the European Union (EU) have set restrictive limits for priority carcinogenic polycyclic aromatic hydrocarbons (CPAHs) in surface waters (EPA 3.8 ng L−1and EU 2–100 ng L−1) in order to protect aquatic life and human health. Currently, methods meeting these sensitivity criteria are not suitable for routine analysis of CPAHs. Here, we present a simple, rapid and low-cost method for the routine monitorization of these pollutants in aquatic environments based on their extraction with coacervates of decanoic acid reverse micelles in the nano- and microscale, and determination by liquid chromatography–fluorimetry (LC–FL). The method involves the stirring of filtered aqueous samples (36 mL) with 4mL of THF containing 70mg of decanoic acid for 5 min, its centrifugation for 10 min and the analysis of 20 uL of the resulting coacervate containing the CPAHs by LC/FL. The method is robust, the extractions being independent on salt concentration (up to 1 M), temperature (up to 60 ◦C) and pH (below 4). Besides, the coacervate prevents the CPAHs from adsorption onto the surface of containers during sample storage. No clean-up steps are necessary and the method is matrix- independent. The quantification and detection limits of the method ranged between 0.4 and 3.5 ng/L and 0.1 and 1 ng/L, respectively, for the seven priority CPAHs. The method has been successfully applied to the determination of these pollutants in raw and treated sewage from three mechanical–biological treatment plants, two rivers and a reservoir with frequent motorized recreational craft activities, all of them located in the South of Spain. Recoveries for spiked samples in the range 2–30 ng/L were between 88 and 95% with relative standard deviations from 1 to 7%. CPAHs were present in wastewater influents at concentrations in the range 3.9–37 ng/L, while the treatment at theWWTPs studied reduced their concentration in their respective effluents in a percentage near 100%. Three CPAHs were present at quantifiable levels in Guadajoz river (1.8–6.6 ng/L) and six in La Bre˜na reservoir (1.39–4.8 ng/L). | es_ES |
dc.format.mimetype | application/pdf | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.rights | https://creativecommons.org/licenses/by-nc-nd/4.0/ | es_ES |
dc.source | Ballesteros‐Gómez, A., Rubio, S., & Pérez‐Bendito, D. (2008). Determination of priority carcinogenic polycyclic aromatic hydrocarbons in wastewater and surface water by coacervative extraction and liquid chromatography–fluorimetry. Journal of Chromatography A, 1203(2), 168-176. https://doi.org/10.1016/j.chroma.2008.07.044 | es_ES |
dc.subject | SUPRAS | es_ES |
dc.subject | Environmental analysis | es_ES |
dc.subject | Priority carcinogenic polycyclic aromatic hydrocarbons | es_ES |
dc.subject | Liquid chromatography | es_ES |
dc.subject | Fluorescence detection | es_ES |
dc.subject | Reverse micelles | es_ES |
dc.title | Determination of priority carcinogenic polycyclic aromatic hydrocarbons in wastewater and surface water by coacervative extraction and liquid chromatography-fluorimetry | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.relation.publisherversion | https://doi.org/10.1016/j.chroma.2008.07.044 | es_ES |
dc.relation.projectID | Gobierno de España. CTQ2005-00643 | es_ES |
dc.relation.projectID | Gobierno de España. AP2005-4275 | es_ES |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es_ES |