银餐具中银迁移量的影响因素研究

Research on the influence factors of silver migration in silver tableware

根据银餐具的预期使用方式,选取不同食品模拟物及实验条件,用电感耦合等离子体发射光谱法(ICP-AES)对银内胆水杯中银迁移量进行测试。测试结果表明,银迁移量主要受浸泡时间、温度和酸度影响。在长时间浸泡、较高温度、酸性或茶水实验条件下,银内胆水杯中均可迁移出较多银离子,超过饮用水国家标准中对银离子限量(0.05 mg/L)的规定,在餐具安全评价中应予重视。

Different food simulants and experimental conditions were selected to test the silver migration in the silver tank water cup by inductively coupled plasma atomic emission spectrometry(ICP-AES)according to the expected use of silver tableware.The results showed that the amount of silver migration was mainly affected by soaking time,temperature and acidity,respectively.However,under the conditions of long-time immersion,higher temperature,acidic or tea experimental conditions,more silver ions could be migrated from the silver tank water cup,which were beyond the limit of silver ions(0.05 mg/L)in drinking water specified in the national standard.Attention should be paid to the safety of silver tableware.