Determination of 6 Phthalate Esters in Food-Packaging Plastic Bags Using Solid-Phase Microextraction- Gas Chromatography-Mass Spectrometry

doi:10.7506/spkx1002-6630-201406026

Abstract

Abstract:

A method based on solid-phase microextraction (SPME) technique followed by gas chromatography-mass
spectrometry (GC-MS) was developed for the determination of 6 phthalic acid esters (PAEs) in food-packaging plastic bags.
The parameters affecting the partitions of the analytes such as fiber coating, extraction temperature and extraction style were
optimized. The final SPME method employed an 85 μm polyacrylate (PA)-coating fiber and the extraction solvent used was
n-hexane. After equilibration for 5 minutes at 90 ℃, headspace adsorption for 30 minutes was carried out. Then the fiber
was introduced into the GC injector port and the extract was desorbed at 250 ℃ for 5 min. The linear range of the method
was 0.25-50 mg/L. The detection limits for 6 PAEs were in the range of 0.049?0.920 mg/L, and the recoveries from spiked
samples were 82.2%?109.0% with RSDs (n = 6) of 4.0%?12.0%. The method enables enrichment of PAEs from sample
matrices and can meet the requirements for the analysis of PAEs in food-packaging plastic bags.

Key words: solid-phase microextraction (SPME), gas chromatography-mass spectrometry (GC-MS), food-packaging plastic bag, phthalic acid esters (PAEs)

CLC Number:

O657.63

CHEN De-wen, LIAO Xin-yan, WANG Zheng-lin, ZHOU Jiang, WANG Guo-jian. Determination of 6 Phthalate Esters in Food-Packaging Plastic Bags Using Solid-Phase Microextraction- Gas Chromatography-Mass Spectrometry[J]. FOOD SCIENCE, 2014, 35(6): 125-128.

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