Evaluating use stage exposure to food contact materials in a LCA framework

Alexi Ernstoff, Olivier Jolliet, Peter Fantke

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    Abstract

    We present novel methods to incorporate exposure to chemicals within food contact materials (FCM) (e.g. packaging) into life cycle impact assessment (LCIA). Chemical migration into food is modeled as a function of contact temperature, time, and various chemical, FCM, and food properties. In order to reduce computing time and complexity, a double exponential curve was fit (R2≈1) to an exposure model which otherwise requires numeric solutions. The model is modified to evaluate the product intake fraction, PiF, which is a new metric that accounts for exposure to mass of chemicals embodied in a product in a way compatible with intake fraction, iF, a metric traditionally used in LCIA. The model predicts PiF increases with temperature and for compounds with lower octanol-water partition coefficients within more permeable materials which are in contact with foods with high ethanol equivalencies (fatty foods).
    Original languageEnglish
    Title of host publicationProceedings. International conference on Life Cycle Assessment as reference methodology for assessing supply chains and supporting global sustainability challenges : LCA for "Feeding the planet and energy for life"
    EditorsSimona Scalbi, Arianna Dominici Loprieno, Paola Sposato
    PublisherENEA
    Publication date2015
    Pages311-314
    Publication statusPublished - 2015
    EventInternational conference on Life Cycle Assessment as reference methodology for assessing supply chains and supporting global sustainability challenges - Stresa and Milano, Italy
    Duration: 6 Oct 20158 Oct 2015

    Conference

    ConferenceInternational conference on Life Cycle Assessment as reference methodology for assessing supply chains and supporting global sustainability challenges
    CountryItaly
    CityStresa and Milano
    Period06/10/201508/10/2015

    Cite this

    Ernstoff, A., Jolliet, O., & Fantke, P. (2015). Evaluating use stage exposure to food contact materials in a LCA framework. In S. Scalbi, A. D. Loprieno, & P. Sposato (Eds.), Proceedings. International conference on Life Cycle Assessment as reference methodology for assessing supply chains and supporting global sustainability challenges: LCA for "Feeding the planet and energy for life" (pp. 311-314). ENEA.