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Investigations into the use of overall migration methods to test for substances with high specific migration limits

Project Code: A03013;
Publication:

Bradley, E.L., Castle, L., Jickells, S.M., Mountfort, K.A., Read, W.A. (2009) Use of overall migration methodology to test for food-contact substances with specific migration limits. Food Additives & Contaminants: Part A. 26: 574-582.

02/03/2011

Kings College London
Jickells, S ;
Central Science Laboratory
Read, W;
Kings College London
Mountfort, K

The aim of this project was to evaluate the possibilities and limitations of using gravimetric overall migration (OM) results to reduce the need for individual chemical analysis for the migration levels of specific substances. If for example the OM result for a plastic was numerically lower (in mg/kg units) than the specific migration limit (SML) for one or more monomers or additives used in that plastic, then there would be no need to test specifically for the migration of these substances. This approach would only work if the substance in question was reliably included in the OM result - i.e. was not volatile, unstable etc. From a total of 131 substances thought to be possible candidates for this approach, it was judged that 92 would be suitable under certain circumstances - most especially with polymers showing low background migration of largely oligomeric material.

Final report

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