This article describes a rapid heart-cutting liquid chromatography–gas chromatography (LC–GC) method for the analysis of mineral oil saturated hydrocarbons (MOSHs) found in a range of widely-consumed foods, including crisps, margarine, tinned tuna and vegetable oils.
The automated LC–GC experiments were performed using a system equipped with a syringe-type interface capable of both heart-cutting and comprehensive two-dimensional analysis. The first dimension separation was achieved on a silica column operated under isocratic conditions using hexane. The heart-cuts were then transferred to a programmed temperature vaporizer. After the large volume injection (LVI), the target analytes were rapidly separated (~ 9 min) using a micro-bore GC capillary column. The overall LC–GC run time enabled the analysis of around four samples in an hour. Various degrees of MOSH contamination — ranging from "not detected" to around 390 mg/kg — were discovered in the thirty samples that were subjected to analysis.
Posted: January 18, 2012, 4:32 pm
ATAS GL International B.V. has changed her name into GL Sciences B.V.. We are based in Eindhoven, The Netherlands. Founded in 1990, GL Sciences B.V specializes in development and manufacturing of...