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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/5118

    Título
    Kinetic models of migration of melamine and formaldehyde from melamine kitchenware with data of liquid chromatography
    Autor
    Arce Antón, MarAutoridad UBU Orcid
    Sanllorente Méndez, SilviaAutoridad UBU Orcid
    Ortiz Fernández, Mª CruzAutoridad UBU Orcid
    Publicado en
    Journal of Chromatography A. 2019, V. 1599, p. 115-124
    Editorial
    Elsevier
    Fecha de publicación
    2019-08
    ISSN
    0021-9673
    DOI
    10.1016/j.chroma.2019.04.006
    Resumen
    European legislation has established a specific migration limit (SML) of 15 mg kg−1 for formaldehyde and 2.5 mg kg−1 for melamine. Formaldehyde resins are used in the manufacture of melamine kitchenware. Formaldehyde is listed in group 1 of the IARC list of carcinogenic compounds. To determine the quantity of formaldehyde and melamine as potential migrants from different types of melamine kitchenware (glass, mug, cutlery, big cup and bowl), a HPLC-DAD method has been implemented. This method is an alternative to the ones proposed in technical guidelines to determine formaldehyde by UV–vis spectrophotometry and melamine by HPLC. The final objective was to fit the migration kinetic curves of these two analytes in melamine kitchenware. After the method was validated, decision limit (CCα) and detection capability (CCβ) were calculated for both analytes, when the probabilities of false positive (α) and false negative (β) were fixed at 0.05; being CCβ 0.269 mg L−1 and 0.311 mg L−1 for melamine and formaldehyde respectively. CCα and CCβ were also calculated at the SML of both analytes. The migration testing were conducted with simulant B (3% acetic acid (w/v) in aqueous solution), the conditions of each exposure being 70 °C for 2 h. The quantities of melamine and formaldehyde found in the third exposure of the total kitchenware analysed were between 0.21 and 1.09 mg L−1 and between 0.55 and 3.86 mg L−1, respectively. Migration kinetic curves were built for each type of kitchenware with the data of sixteen consecutive migration cycles (70 °C each 30 min). The SML for melamine was surpassed in the mug, in the big cup and in the bowl after eleven, thirteen and one cycles, respectively. When more cycles were carried out in the mug, the values of the accumulated quantity of formaldehyde and melamine were 15.30 and 6.79 mg L−1, respectively, after thirty-two cycles. Both concentrations exceeded the corresponding SML.
    Palabras clave
    Melamine
    Formaldehyde
    Kitchenware
    HPLC-DAD
    Migration kinetic curve
    Specific migration limit
    Materia
    Química analítica
    Chemistry, Analytic
    URI
    http://hdl.handle.net/10259/5118
    Versión del editor
    https://doi.org/10.1016/j.chroma.2019.04.006
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    Attribution-NonCommercial-NoDerivatives 4.0 International
    Documento(s) sujeto(s) a una licencia Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
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    Arce-jca_2019.pdf
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    1.153Mb
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