Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7585322 | Food Chemistry | 2018 | 34 Pages |
Abstract
A sensitive GC-MS method is reported for the determination of twelve polycyclic aromatic hydrocarbons (PAHs) in baby food. The sample preparation involves QuEChERS extraction combined with low-density solvent dispersive liquid-liquid microextraction (LDS-DLLME) and ultra-low temperature (â80â¯Â°C). Plackett-Burman screening design was employed to identify the main sample preparation variables that affect the extraction efficiency, such as the volume of toluene used in LDS-DLLME. The suitability of proposed method was verified by analytical selectivity, linearity in solvent and matrix-matched calibration curves and adequate recoveries (72-112%) and precision (RSD valuesâ¯â¤11%), under repeatability and within-laboratory reproducibility conditions. High analytical sensitivity was achieved for the monitoring of PAHs at the strict limit of 1â¯Âµgâ¯kgâ1 fixed by the European Commission for baby foods. The validated method was applied to thirty-two commercial baby food samples, and the investigated PAHs were not detected in any sample.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Mateus Henrique Petrarca, Helena Teixeira Godoy,