Comparative studies of the static and dynamic headspace extraction of saturated short chain aldehydes from cellulose-based packaging materials

摘要: Aldehydes in cellulose-based materials such as cardboard are derived from lipid degradation. Depending on the production- and storage conditions of cardboard, aldehyde content changes. Owing to their sensorial properties, accurate control is obligatory. The usually exhibits strong even varying matrix effects considerable inhomogeneity. comparability results analysis after static dynamic headspace extraction short chained saturated aldehydes matrices was studied. In case technique, special attention given establishment equilibrium, which could be reached by addition water a displacer. For extraction, volatiles were purged an inert gas enriched adsorbent trap. theory, yield should 100%. Since there no certified reference for verification efficiency available, confirmation achieved determining total amount analytes sample means multiple extraction.In comparison operation mode, major drawbacks technique found based more complex parameter string limitations extractable quantities, may result enhanced uncertainty measurements. Nevertheless, pointed out that both techniques suitable determination volatile materials.