Headspace solid-phase microextraction of oil matrices heated at high temperature and phthalate esters determination by gas chromatography multistage mass spectrometry.
Talanta
; 80(5): 2076-82, 2010 Mar 15.
Article
en En
| MEDLINE
| ID: mdl-20152455
ABSTRACT
A solvent-free analytical approach based on headspace solid-phase microextraction (SPME) of oil matrices heated at high temperatures coupled to gas chromatography with mass spectrometry detector (GC-ion trap) has been developed for the determination of phthalic acid esters (PAEs) in oil matrices without sample manipulation. For this study, three fibers, i.e., 85 microm-polyacrylate (PA), 50/30 microm-divinylbenzene-carboxen-polydimethylsiloxane (DVB/CAR/PDMS) and 100 microm-polydimethylsiloxane (PDMS) were tested. Variables affecting the SPME headspace composition such as incubation sample temperature, sample incubation time and fiber exposition time were optimized. The optimal values found were 250 degrees C for sample incubation temperature and 30 min for incubation and extraction time. PA fiber was not suitable for the lightest polar phthalates which showed poor extraction and repeatability values. PDMS fiber had very poor response for some of the heavier and non-polar phthalates, whereas DVB/CAR/PDMS fiber showed the best response and repeatability values for the majority of the phthalates studied. The main benefit of the analytical method proposed is the absence of sample manipulation and hence avoidance of possible contamination coming from glassware, environment, solvents and samples.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Ácidos Ftálicos
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Aceites
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Microextracción en Fase Sólida
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Cromatografía de Gases y Espectrometría de Masas
Tipo de estudio:
Evaluation_studies
Idioma:
En
Revista:
Talanta
Año:
2010
Tipo del documento:
Article
País de afiliación:
España