On-line coupled high performance liquid chromatography-gas chromatography for the analysis of contamination by mineral oil. Part 1: Method of analysis

被引:129
作者
Biedermann, Maurus [1 ]
Grob, Koni [1 ]
机构
[1] Official Food Control Author Canton Zurich, CH-8032 Zurich, Switzerland
关键词
Solvent trapping; Retention gap technique; Partially concurrent solvent evaporation; Y-interface; Mineral oil saturated hydrocarbons (MOSH); Mineral oil aromatic hydrocarbons (MOAH); LARGE-VOLUME INJECTION; CONCURRENT SOLVENT EVAPORATION; EARLY VAPOR EXIT; LC-GC; SATURATED-HYDROCARBONS; RETENTION GAPS; FOOD CONTAMINATION; EDIBLE OILS; PARAFFINS; MIGRATION;
D O I
10.1016/j.chroma.2012.05.095
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
For the analysis of mineral oil saturated hydrocarbons (MOSH) and mineral oil aromatic hydrocarbons (MOAH), on-line coupled high performance liquid chromatography-gas chromatography-flame ionization detection (HPLC-GC-FID) offers important advantages: it separates MUSH and MOAH in robust manner, enables direct injection of large aliquots of raw extracts (resulting in a low detection limit), avoids contamination of the sample during preparation and is fully automated. This review starts with an overview of the technology, particularly the fundamentals of introducing large volumes of solvent into GC, and their implementation into various transfer techniques. The main part deals with the concepts of MOSH and MOAH analysis, with a thorough discussion of the choices made. It is followed by a description of the method. Finally auxiliary tools are summarized to remove interfering components, enrich the sample in case of a high fat content and obtain additional information about the MUSH and MOAH composition. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:56 / 75
页数:20
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