食品科学

• 基础研究 • 上一篇    下一篇

陶瓷食品包装材料中铅、钴、镍、锌向酸性食品模拟物的迁移

董占华1,卢立新1,2,*,刘志刚1   

  1. 1.江南大学机械工程学院包装工程系,江苏 无锡 214122;
    2.中国包装总公司,食品包装技术与安全重点实验室,江苏 无锡 214122
  • 出版日期:2013-08-15 发布日期:2013-09-03
  • 通讯作者: 卢立新
  • 基金资助:

    “十一五”国家科技支撑计划项目(2009BADB9B04);江南大学博士研究生科学研究基金项目(JUDCF09011);
    产品包装与物流广东普通高校重点实验室开放基金项目(2011004)

Migration of Lead, Cobalt, Nickel and Zinc from Ceramic Food Packaging Materials into Acidic Food Simulants

DONG Zhan-hua1,LU Li-xin1,2,*,LIU Zhi-gang1   

  1. 1. Department of Packaging Engineering, School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China;
    2. Key Laboratory of Food Packaging Techniques and Safety, China National Packaging Corporation, Wuxi 214122, China
  • Online:2013-08-15 Published:2013-09-03
  • Contact: LU Li-xin

摘要:

陶瓷食品包装容器中的有害重金属如铅、钴、镍、锌等向食品的迁移会造成食品污染。通过制备含有铅、钴、镍、锌4种重金属元素的陶瓷样品,使之分别在20、40、60℃条件下与4%乙酸、10%乙酸接触一定时间来研究这些重金属向酸性食品的迁移行为。结果表明:4种重金属中,镍最容易溶出,而铅相对来说最不容易溶出;重金属的迁移量随着温度的升高而增加,并且重金属的迁移速率也与温度成正比;重金属的迁移量与食品的pH值成反比,pH值越低重金属的迁移量越高。通过对浸出数据进行非线性Parabolic拟合分析发现,重金属铅、钴、镍、锌的溶出量与时间的平方根成正比。这表明重金属在食品模拟物中迁移是一个扩散控制的过程。

关键词: 陶瓷食品包装材料, 铅, 钴, 镍, 锌, 酸性食品模拟物, 迁移

Abstract:

Ceramic food packaging containers with improperly formulated glazes can release some toxic heavy metals such
as lead, cobalt, nickel and zinc into foods, which may contaminate the foods and even endanger consumers’ health. In order
to explore the leaching behavior of lead, cobalt, nickel and zinc, long-term contact experiments were carried out using glazed
tile samples with 4% and 10% acetic acid solutions under different conditions. Results indicated that nickel was the most
leachable element, and lead was the least leachable element. Both the amount of heavy metals released into the leachate and
the release rate were positively related to temperature. The released amount of heavy metals became higher with decreasing
pH of food simulants. Parabolic Fit analysis of all leaching data on long-term yield revealed good correlation (R2 ≥ 0.93),
which indicates the migration of lead, cobalt, nickel and zinc from glaze tile into food simulants to be a diffusion-controlled
process and have a linear -dependent manner.

Key words: words:food packaging materials, lead, cobalt, nickel, zinc, acidic food simulants, migration

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