Ojha Priyanka, Ojha C S, Sharma V P
Developmental Toxicology Division, Industrial Toxicology Research Centre, Lucknow-226 001.
J Environ Sci Eng. 2007 Jan;49(1):62-6.
In recent years, the use of aluminium foils to wrap foodstuff and commodities has been increased to a great extent. Aluminium was found to leach out from the foil in different simulants particularly in distilled water, acidic and alkaline medium at 60 +/- 2 degrees C for 2 hours and 40 +/- 2 degrees C for 24 hours. The migration was found to be above the permissible limit as laid down by WHO guidelines, that is of 0.2 mg/L of water. The protocol used for this study was based on the recommendation of Bureau of Indian Standard regarding the migration of chemical additives from packaging materials used to pack food items. Migration of the aluminium metal was found significantly higher in acidic and aqueous medium in comparison to alcoholic and saline medium. Higher temperature conditions also enhanced the rate of migration of aluminium in acidic and aqueous medium. Leaching of aluminium metal occurred in double distilled water, acetic acid 3%, normal saline and sodium carbonate, except ethanol 8%, in which aluminium migration was below the detection limit of the instrument where three brands of the aluminium foil samples studied.
近年来，铝箔用于包裹食品和商品的情况在很大程度上有所增加。人们发现，在不同的模拟物中，尤其是在蒸馏水、酸性和碱性介质中，于60±2摄氏度下放置2小时以及在40±2摄氏度下放置24小时后，铝会从铝箔中溶出。研究发现，这种迁移超过了世界卫生组织指南规定的允许限度，即每升水0.2毫克。本研究采用的方案基于印度标准局关于化学添加剂从用于包装食品的包装材料中迁移的建议。与酒精和盐溶液介质相比，在酸性和水性介质中发现铝金属的迁移明显更高。较高的温度条件也会提高铝在酸性和水性介质中的迁移速率。在所研究的三个品牌铝箔样品中，除了8%的乙醇（其中铝的迁移低于仪器的检测限）外，在双蒸水、3%的乙酸、生理盐水和碳酸钠中均发生了铝金属的溶出。
