Over deze norm
|Commissie||Gebruiksartikelen in contact met levensmiddelen|
This European standard describes the determination of NOGE components with more than two aromatic rings (the two-ring NOGE is equal to BFDGE = Bis(2-hydroxyphenyl)methane bis(2,3-epoxypropyl)ether) and at least one epoxy group as well as their derivatives containing chlorohydrin functions and having a molecular mass less than 1000 Daltons in can coatings. A high performance liquid chromatography (HPLC) method is employed based on reversed phase HPLC and fluorescence detection. The method is capable of determining NOGE and its derivatives at a minimum level of 1 g/ml in solution. Direct HPLC analysis of the can coating extract may result in chromatograms difficult to interpret, due to interference from other components or the instability of the monomer resulting in a complex mixture of derivatives and/or reaction products. By forced hydrolysis of all epoxy groups and their reaction products, the quantification of the NOGE is simplified and the identities of the substances are indicatively confirmed.
|Nederlandse titel||Materialen en artikelen in contact met voedingsmiddelen - Bepaalde epoxy afgeleide producten die aan limietwaarde worden onderworpen - Bepaling van NOGE en hun hydroxy en gechloreerde afgeleide producten|
|Engelse titel||Materials and articles in contact with foodstuffs - Certain epoxy derivatives subject to limitation - Determination of NOGE and its hydroxy and chlorinated derivatives|