Methods for the determination of 3-MCPD-fatty acid esters
Methods for the determination of 3-MCPD-fatty acid esters
Methods for the determination of 3-MCPD-fatty acid esters
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Methode „BfR 9“<br />
Umesterung im Alkalischen. Phenylboronsäure-Derivatisierung<br />
2 – 3 min<br />
100 mg Probe in 0.5 ml tert. Butylmethyle<strong>the</strong>r<br />
20 µl d 5 <strong>MCPD</strong><br />
2 x 1 ml Hexan<br />
0.2 ml NaOCH 3 - Lösung<br />
PBA – Derivatisierung<br />
in Diethyle<strong>the</strong>r<br />
9 – 10 min<br />
0.5 ml (NH 4 ) 2 SO 4 / H 2 SO 4<br />
2 x 0.6 ml EtOAc<br />
N 2 . 40 C<br />
Lösen in Aceton<br />
GC-MS<br />
Angelika Preiß-Weigert 18 May 2010 3rd Meeting AOCS Expert Panel on Process Contaminants page 21