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The development and optimization of a modified single-drop microextraction method for organochlorine pesticides determination by gas chromatography-tandem mass spectrometry

2012Journal article Open access
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dc.contributor.authorFernandes, Virgínia C.
dc.contributor.authorViswanathan, Subramanian
dc.contributor.authorMateus, Nuno
dc.contributor.authorDomingues, Valentina F.
dc.contributor.authorDelerue-Matos, Cristina
dc.date.accessioned2013-10-03T09:36:04Z
dc.date.available2013-10-03T09:36:04Z
dc.date.issued2012
dc.description.abstractWe have developed a new method for single-drop microextraction (SDME) for the preconcentration of organochlorine pesticides (OCP) from complex matrices. It is based on the use of a silicone ring at the tip of the syringe. A 5 μL drop of n-hexane is applied to an aqueous extract containing the OCP and found to be adequate to preconcentrate the OCPs prior to analysis by GC in combination with tandem mass spectrometry. Fourteen OCP were determined using this technique in combination with programmable temperature vaporization. It is shown to have many advantages over traditional split/splitless injection. The effects of kind of organic solvent, exposure time, agitation and organic drop volume were optimized. Relative recoveries range from 59 to 117 %, with repeatabilities of <15 % (coefficient of variation) were achieved. The limits of detection range from 0.002 to 0.150 μg kg−1. The method was applied to the preconcentration of OCPs in fresh strawberry, strawberry jam, and soil.por
dc.identifier.doi10.1007/s00604-012-0810-9pt_PT
dc.identifier.issn0026-3672
dc.identifier.urihttp://hdl.handle.net/10400.22/2140
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherSpringerpor
dc.relation.ispartofseriesMicrochimica Acta; Vol. 178, Issue 1-2
dc.relation.publisherversionhttp://link.springer.com/article/10.1007%2Fs00604-012-0810-9por
dc.subjectOrganochlorine pesticidespor
dc.subjectSDMEpor
dc.subjectGC-MS/MSpor
dc.titleThe development and optimization of a modified single-drop microextraction method for organochlorine pesticides determination by gas chromatography-tandem mass spectrometrypor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage202por
oaire.citation.issueIssue 1-2
oaire.citation.startPage195por
oaire.citation.titleMicrochimica Acta
oaire.citation.volume178por
oaire.citation.volumeVol. 178
person.familyNameDomingues
person.familyNameDelerue-Matos
person.givenNameValentina Maria Fernandes
person.givenNameCristina
person.identifier.ciencia-id4E16-791D-6664
person.identifier.ciencia-id9A1A-43FB-5C27
person.identifier.orcid0000-0003-3472-849X
person.identifier.orcid0000-0002-3924-776X
person.identifier.ridD-4990-2013
person.identifier.scopus-author-id6603741848
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationbe653ab6-34ec-4329-972a-eee990a7ec66
relation.isAuthorOfPublication09f6a7bd-2f15-42b0-adc5-04bd22210519
relation.isAuthorOfPublication.latestForDiscovery09f6a7bd-2f15-42b0-adc5-04bd22210519

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