Determination of halophenolic wood preservant traces in milk using headspace solid-phase microextraction and gas chromatography-mass spectrometry.
J Chromatogr A
; 1215(1-2): 1-7, 2008 Dec 26.
Article
em En
| MEDLINE
| ID: mdl-19027907
Extraction of 2,4,6-tribromophenol (TBP), pentachlorophenol (PCP) and pentachloroanisole (PCA) from whole fat cow milk using headspace solid-phase microextraction (HS-SPME) with polyacrylate (PA) and polydimethylsiloxane (PDMS) fibers was evaluated and compared. The PA was studied to extract PCA, TBP and PCP, while PDMS was used to extract PCA and acetyl derivatives of PCP and TBP. The parameters: fiber position, matrix effect, temperature and extraction time were studied. The analysis was made by gas chromatography coupled with mass spectrometry. The results show that the distance between fiber and milk had a significant effect on the extraction kinetics. Also, the fat content in milk was a critical parameter that clearly affected the extracted mass of each compound. By using a PA fiber, the sensitivity for PCA and TBP was higher than that obtained with PDMS fiber; however, PA fiber did not allow PCP determination. The recoveries from milk were 95+/-4%, 96+/-2% and 96+/-4% for PCP, TBP and PCA, respectively, with the PDMS fiber and 94+/-3% and 95+/-1% for TBP and PCA, respectively, with PA fiber. The method using PDMS fiber was applied to real whole milk samples.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Pentaclorofenol
/
Fenóis
/
Madeira
/
Leite
/
Anisóis
/
Cromatografia Gasosa-Espectrometria de Massas
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
Idioma:
En
Revista:
J Chromatogr A
Ano de publicação:
2008
Tipo de documento:
Article
País de afiliação:
Chile
País de publicação:
Holanda