Determination of ∈-Caprolactam Migration from Polyamide Plastics: A New Approach

摘要

A new gas chromatography method for determination of ε-caprolactam (CPR) migration from packaging materials such as: polyamide (PA) films, PA granulates, PA/PE (polyethylene) laminates, PA casings, etc., to food simulants has been developed. Water, 3/100 w/v acetic acid, 15/100 and 95/100 v/v ethanol and olive oil have been used as a food simulants. Using the 1, 4-butanediol (BUG) as an internal standard (instead of aza-2-cyclononanone), calibration curves were constructed. Very good separation of CPR from BUG was achieved by using a Nukol fused silica capillary column (Supelco), 25m×0.32 mm. The time of Analysis is shorter than 12 min: 7.69 min for BUG and 11.60 min for CPR.