Please use this identifier to cite or link to this item:
https://hdl.handle.net/10216/102926
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.creator | Sara Ramos | |
dc.creator | José Silva | |
dc.creator | Vera Homem | |
dc.creator | Alessandra Cincinelli | |
dc.creator | Lúcia Silveira Santos | |
dc.creator | Maria Arminda Alves | |
dc.creator | Nuno Ratola | |
dc.date.accessioned | 2022-09-07T14:16:24Z | - |
dc.date.available | 2022-09-07T14:16:24Z | - |
dc.date.issued | 2016 | |
dc.identifier.issn | 1759-9660 | |
dc.identifier.other | sigarra:64062 | |
dc.identifier.uri | https://hdl.handle.net/10216/102926 | - |
dc.description.abstract | In this study, a solvent-saving analytical strategy was validated to quantify the levels of 8 volatile methyl siloxanes (VMSs) in pine needles, soils and air (measured by sorbent-impregnated polyurethane foam passive samplers, SIPs). Different extraction solvents and sample handling procedures were tested and the protocol that reached the highest recoveries employed QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) and was adapted to pine needles and soils. For SIPs, another method was developed in parallel, as QuEChERS could not be applied to this matrix due to logistic and operative constraints. Thus, extraction was performed using classic Soxhlet extractors and a short clean-up step, limited to the removal of water by a solid-phase extraction (SPE) column containing sodium sulphate. The quantification of the target compounds was performed by gas chromatography/mass spectroscopy (GC/MS), with identical set-ups for the three matrices. Similar validation protocols were applied and yielded limits of detection (LODs) from 1.8 to 10.8 ng kg(-1) (dry weight) for pine needles, from 3.4 to 19.8 ng kg(-1) (dw) for soils and from 4.7 to 10.2 ng(SIP)(-1) (dw) for SIPs. The overall mean recoveries were 75 +/- 11%, 69 +/- 17% and 87 +/- 8%, respectively. The application of the methodologies to naturally contaminated samples collected in an urban and a remote site revealed siloxane levels comparable to other studies in the literature and a predominance of the cyclic siloxanes over the linear ones, which were frequently not detected. | |
dc.language.iso | eng | |
dc.relation | info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e a Tecnologia/Projetos Estratégicos/UID/EQU/00511/2013 - POCI-01-0145-FEDER-006939/Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia/LEPABE | |
dc.relation | info:eu-repo/grantAgreement/Autoridade de Gestão do Programa Operacional Regional do Norte/Programas Integrados de IC&DT/NORTE-07-0124-FEDER-000025/(Bio) Chemical Engineering: Multi-Scale Approaches for Sustainable Environment and Health/LEPAE/CEFT - RL2 | |
dc.relation | info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e a Tecnologia/Projetos Exploratórios/EXPL/AAG-MAA/0981/2013/SILOQUEST - Como se comportam os siloxanos no meio ambiente?/SILOQUEST | |
dc.rights | restrictedAccess | |
dc.subject | Ciências da engenharia e tecnologias | |
dc.subject | Engineering and technology | |
dc.title | Solvent-saving approaches for the extraction of siloxanes from pine needles, soils and passive air samplers | |
dc.type | Artigo em Revista Científica Internacional | |
dc.contributor.uporto | Faculdade de Engenharia | |
dc.identifier.doi | 10.1039/c6ay00506c | |
dc.identifier.authenticus | P-00K-N5M | |
dc.subject.fos | Ciências da engenharia e tecnologias | |
dc.subject.fos | Engineering and technology | |
Appears in Collections: | FEUP - Artigo em Revista Científica Internacional |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
64062.pdf Restricted Access | Artigo original publicado | 465.87 kB | Adobe PDF | Request a copy from the Author(s) |
64062.1.pdf | Post-Print version | 1.14 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.