The present research is directed toward the use of a rapid heart-cutting LC-GC method for the analysis of mineral oil saturated hydrocarbons, contained in a series of baby foods (vegetable, meat, fruit). The automated LC-GC experiments were carried out by 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 (hexane). The heart-cuts were transferred to a programmed temperature vaporizer. After the large volume injection, the target analytes were separated in a rapid manner (~ 9 min) using a micro-bore GC capillary. The overall LC-GC run time enabled the analysis of circa 4 samples/hour. Several commercial samples were subjected to analysis, with various degrees of contamination found in all samples.
Multidimensional liquid-gas (LC-GC) chromatography for the rapid determination of saturated hydrocarbon contamination in baby food
TRANCHIDA, Peter Quinto;ZOCCALI, MARIOSIMONE;DUGO, Paola;DUGO, Giovanni;MONDELLO, Luigi
2012-01-01
Abstract
The present research is directed toward the use of a rapid heart-cutting LC-GC method for the analysis of mineral oil saturated hydrocarbons, contained in a series of baby foods (vegetable, meat, fruit). The automated LC-GC experiments were carried out by 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 (hexane). The heart-cuts were transferred to a programmed temperature vaporizer. After the large volume injection, the target analytes were separated in a rapid manner (~ 9 min) using a micro-bore GC capillary. The overall LC-GC run time enabled the analysis of circa 4 samples/hour. Several commercial samples were subjected to analysis, with various degrees of contamination found in all samples.Pubblicazioni consigliate
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