Publication
Optimization of QuEChERS method for the analysis of organochlorine pesticides in soils with diverse organic matter
| dc.contributor.author | Correia-Sá, Luísa | |
| dc.contributor.author | Fernandes, Virgínia C. | |
| dc.contributor.author | Carvalho, Manuela | |
| dc.contributor.author | Calhau, Conceição | |
| dc.contributor.author | Domingues, Valentina F. | |
| dc.contributor.author | Delerue-Matos, Cristina | |
| dc.date.accessioned | 2013-10-01T09:30:23Z | |
| dc.date.available | 2013-10-01T09:30:23Z | |
| dc.date.issued | 2012 | |
| dc.description.abstract | A QuEChERS method has been developed for the determination of 14 organochlorine pesticides in 14 soils from different Portuguese regions with wide range composition. The extracts were analysed by GC-ECD (where GC-ECD is gas chromatography-electron-capture detector) and confirmed by GC-MS/MS (where MS/MS is tandem mass spectrometry). The organic matter content is a key factor in the process efficiency. An optimization was carried out according to soils organic carbon level, divided in two groups: HS (organic carbon>2.3%) and LS (organic carbon<2.3%). Themethod was validated through linearity, recovery, precision and accuracy studies. The quantification was carried out using a matrixmatched calibration to minimize the existence of the matrix effect. Acceptable recoveries were obtained (70–120%) with a relative standard deviation of ≤16% for the three levels of contamination. The ranges of the limits of detection and of the limits of quantification in soils HS were from 3.42 to 23.77 μg kg−1 and from 11.41 to 79.23 μg kg−1, respectively. For LS soils, the limits of detection ranged from 6.11 to 14.78 μg kg−1 and the limits of quantification from 20.37 to 49.27 μg kg−1. In the 14 collected soil samples only one showed a residue of dieldrin (45.36 μg kg−1) above the limit of quantification. This methodology combines the advantages of QuEChERS, GC-ECD detection and GC-MS/MS confirmation producing a very rapid, sensitive and reliable procedure which can be applied in routine analytical laboratories. | por |
| dc.identifier.doi | 10.1002/jssc.201200087 | pt_PT |
| dc.identifier.issn | 1615-9314 | |
| dc.identifier.uri | http://hdl.handle.net/10400.22/2044 | |
| dc.language.iso | eng | por |
| dc.peerreviewed | yes | por |
| dc.publisher | Wiley-VCH Verlag | por |
| dc.relation.ispartofseries | Journal of Separation Science; Vol. 35, Issue 12 | |
| dc.relation.publisherversion | http://onlinelibrary.wiley.com/doi/10.1002/jssc.201200087/abstract;jsessionid=21C4324F17E65B814CB061D27FF59A61.f01t04 | por |
| dc.subject | GC-ECD | por |
| dc.subject | GC-MS/MS | por |
| dc.subject | Organochlorine pesticides | por |
| dc.subject | QuEChERS | por |
| dc.subject | Soils | por |
| dc.title | Optimization of QuEChERS method for the analysis of organochlorine pesticides in soils with diverse organic matter | por |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 1530 | por |
| oaire.citation.issue | Issue 12 | |
| oaire.citation.startPage | 1521 | por |
| oaire.citation.title | Journal of Separation Science | |
| oaire.citation.volume | 35 | por |
| oaire.citation.volume | Vol. 35 | |
| person.familyName | Domingues | |
| person.familyName | Delerue-Matos | |
| person.givenName | Valentina Maria Fernandes | |
| person.givenName | Cristina | |
| person.identifier.ciencia-id | 4E16-791D-6664 | |
| person.identifier.ciencia-id | 9A1A-43FB-5C27 | |
| person.identifier.orcid | 0000-0003-3472-849X | |
| person.identifier.orcid | 0000-0002-3924-776X | |
| person.identifier.rid | D-4990-2013 | |
| person.identifier.scopus-author-id | 6603741848 | |
| rcaap.rights | closedAccess | por |
| rcaap.type | article | por |
| relation.isAuthorOfPublication | be653ab6-34ec-4329-972a-eee990a7ec66 | |
| relation.isAuthorOfPublication | 09f6a7bd-2f15-42b0-adc5-04bd22210519 | |
| relation.isAuthorOfPublication.latestForDiscovery | be653ab6-34ec-4329-972a-eee990a7ec66 |