Migration of 8 Heavy Metal Elements in Silver Products for Food Contact

HAO Li-hua, REN Yue, ZHAO Li-na, ZHAO Jian

Packaging Engineering ›› 2021 ›› Issue (3) : 136-142.

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PDF(6981 KB)
Packaging Engineering ›› 2021 ›› Issue (3) : 136-142. DOI: 10.19554/j.cnki.1001-3563.2021.03.019

Migration of 8 Heavy Metal Elements in Silver Products for Food Contact

  • HAO Li-hua1, ZHAO Li-na1, REN Yue2, ZHAO Jian3
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Abstract

The work aims to investigate the effects of four factors like heavy metal content, food simulants, migration temperature and migration time on the migration of Ag, As, Pb, Cd, Cr, Ni, Sb and Zn in silver products for food contact. The samples were respectively immersed in 4% acetic acid and 10% ethanol, 50% ethanol, and 95% ethanol food simulants according to the filling immersion and full immersion methods. Upon the completion of immersion migration, 10 mL of the immersion liquid was extracted and measured by ICP-AES.Among the 8 heavy metal elements, Ag, Cr, Ni and Zn were detected and the migration amount of heavy metal elements increased with the increase of the content of this element in silver products for food contact. The migration of heavy metal elements in 10% ethanol, 50% ethanol and 95% ethanol food simulants was low, and the migration of heavy metal elements in 4% acetic acid food simulants significantly increased. The migration of 8 metal elements gradually increased with the increase of the immersion temperature and the extension of the immersion time. The migration of 8 heavy metal elements in silver products for food contact is related to the content of this element in silver products. Silver products for food contact have a large hidden danger of quality and safety when coming into contact with acidic foods, which can easily lead to excessive levels of Ag and Cr in food. This study provides theoretical support for increasing the trading and sales of silver tableware and improving the commercial sales of silver tableware, puts forward reasonable suggestions for regulatory authorities to discover potential product safety risks in a timely manner, and provides reference data for the limited index of migration of heavy metal elements in silver products for food contact.

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HAO Li-hua, REN Yue, ZHAO Li-na, ZHAO Jian. Migration of 8 Heavy Metal Elements in Silver Products for Food Contact[J]. Packaging Engineering. 2021(3): 136-142 https://doi.org/10.19554/j.cnki.1001-3563.2021.03.019
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