Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/3044
Título: Analysis of PCBs in soils and sediments by microwave-assisted extraction, headspace-SPME and high resolution gas chromatography with ion-trap tandem mass spectrometry
Autor: Herbert, Paulo
Morais, Simone
Paíga, Paula
Alves, Arminda
Santos, Lúcia
Palavras-chave: Microwave-assisted extraction
Solid-phase microextraction
Polychlorinated biphenyls
Data: 2006
Editora: Taylor & Francis
Relatório da Série N.º: International Journal of Environmental Analytical Chemistry; Vol. 86, Issue 6
Resumo: A procedure for the determination of seven indicator PCBs in soils and sediments using microwave-assisted extraction (MAE) and headspace solid-phase microextraction (HS-SPME) prior to GC-MS/MS is described. Optimization of the HS-SPME was carried out for the most important parameters such as extraction time, sample volume and temperature. The adopted methodology has reduced consumption of organic solvents and analysis runtime. Under the optimized conditions, the method detection limit ranged from 0.6 to 1 ng/g when 5 g of sample was extracted, the precision on real samples ranged from 4 to 21% and the recovery from 69 to 104%. The proposed method, which included the analysis of a certified reference material in its validation procedure, can be extended to several other PCBs and used in the monitoring of soil or sediments for the presence of PCBs.
Peer review: yes
URI: http://hdl.handle.net/10400.22/3044
ISSN: 0306-7319
Versão do Editor: http://www.tandfonline.com/doi/abs/10.1080/03067310500352346#.UotCrEr6Q24
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