Acid-induced phase separation of anionic surfactants for the extraction of 1,4-dichlorobenzene from honey prior to liquid chromatography
| dc.contributor.author | Paleologos, E. K. | en |
| dc.contributor.author | Giannakopoulos, S. S. | en |
| dc.contributor.author | Zygoura, P. D. | en |
| dc.contributor.author | Kontominas, M. G. | en |
| dc.date.accessioned | 2015-11-24T16:42:45Z | |
| dc.date.available | 2015-11-24T16:42:45Z | |
| dc.identifier.issn | 0021-8561 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/8588 | |
| dc.rights | Default Licence | - |
| dc.subject | 1,4-dichlorobenzene | en |
| dc.subject | anionic surfactants | en |
| dc.subject | phase separation | en |
| dc.subject | honey | en |
| dc.subject | hplc-uv | en |
| dc.subject | volatile organic-compounds | en |
| dc.subject | assisted back-extraction | en |
| dc.subject | gas-chromatography | en |
| dc.subject | aromatic-hydrocarbons | en |
| dc.subject | mass spectrometry | en |
| dc.subject | preconcentration | en |
| dc.subject | microwave | en |
| dc.subject | samples | en |
| dc.title | Acid-induced phase separation of anionic surfactants for the extraction of 1,4-dichlorobenzene from honey prior to liquid chromatography | en |
| heal.abstract | The acid-induced liquid-liquid phase separation of anionic surfactants in aqueous solutions and its applicability to cloud point extraction methodology were applied as a tool for the extraction of 1,4-dichlorobenzene (p-DCB) from aqueous samples. p-DCB is extracted into the micelles of sodium dodecane sulfonate (SDSA) in a 4.2 M HCl solution. The micellar phase is separated from the bulk aqueous solution after centrifugation and collected from the surface of the suspension. The micellar extracts are injected into a high-performance liquid chromatographic apparatus and quantified at 225 nm with a reference wavelength of 280 nm. Following the proposed methodology, a preconcentration factor of ca. 160 is achieved (starting from 50 mL solutions) allowing for detection limits at the low Ag/L level. Application to honey samples produced detection limits of 2.5 Ag/kg with quantification limits of 7.5 Ag/kg, while the recoveries of the method ranged from 85% at high concentrations to 95% at lower concentrations of p-DCB. The combined uncertainty of the entire analytical procedure was 4.5% at the concentration level of 30 Ag/kg allowing for reliable and reproducible results for the determination of p-DCB at the concentration levels considered as thresholds for EU and U. S. legislation (10 Ag/kg). | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.primary | Doi 10.1021/Jf060273z | - |
| heal.identifier.secondary | <Go to ISI>://000239120200005 | - |
| heal.identifier.secondary | http://pubs.acs.org/doi/pdfplus/10.1021/jf060273z | - |
| heal.journalName | J Agric Food Chem | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 2006 | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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