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1 2007

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Migration measurements from plastic packaging: a simulation study on influence of initial concentration profile

Manzoli J. E., Rosa F. M. L., Silva Felix J., Monteiro M.

Metrology and Measurement Systems

2007

Vol. 14, nr 1

117-124

Migration of components from plastic packaging into foodstuffs or into medicines is a very important issue, concerning public health. Using experimental techniques, like gas chromatography-mass spectrometry, these essays measure total migration and specific migration of components from plastic packaging. This work presents an explanation and applications of a numerical technique tool for this measurement, allowing the comprehension of the diffusion process and the estimate of component migration in difficult or impractical measurements. As an application example, the non-uniform influence of initial concentration profile on the migration is presented, demonstrating the necessity of this profile determination for high quality considerations on involved metrology.