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Mathematical equations combined with MHE-GC method to study desorption kinetics of contaminants from food-package paper to air

Abstract

In this study, a technique based on multiple headspace extraction gas chromatography (MHE-GC) was applied to determine the transfer kinetics of contaminants from paper-based packaging materials to air because of its sensitivity and safety. Mathematical equations were derived in order to calculate the desorption reaction rate constant of a contaminant. The procedure was applied to five contaminants: o-xylene, ethanol absolute, n-dodecane, diphenyl oxide, and diallyl-o-phthalate. The results indicated that the desorption reaction rate constant increased with the temperature. The boiling point and chemical structure of the contaminants also affected the desorption reaction rate constant. The temperature had a predominant effect on the desorbing kinetics of the contaminants. The equilibrium times of desorption decreased as the temperature increased; for example, the equilibrium times of o-xylene were ≥4, 4, and 1 h at 40, 70, and 100 °C, respectively.

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Publication details

The article was received on 04 Aug 2017, accepted on 03 Oct 2017 and first published on 04 Oct 2017


Article type: Paper
DOI: 10.1039/C7NJ02872E
Citation: New J. Chem., 2017, Accepted Manuscript
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    Mathematical equations combined with MHE-GC method to study desorption kinetics of contaminants from food-package paper to air

    C. Huang, Y. Zhao, Y. Liu and S. Wang, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ02872E

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