火焰原子吸收光谱法测定水性食品油墨中铜与铅的溶出量  

Dissolution Determination of Copper and Lead from Water-Based Food Ink by Flame Atomic Absorption Spectrometry

作　　者：曹瑜 钟泽辉[1] 林锐斌 唐聪 CAO Yu;ZHONG Zehui;LIN Ruibin;TANG Cong(College of Packaging and Materials Engineering,Hunan University of Technology,Zhuzhou Hunan 412007,China;Guangdong Tianlong Ink Co.,Ltd.,Zhaoqing Guangdong 526000,China)

机构地区：[1]湖南工业大学包装与材料工程学院,湖南株洲412007 [2]广东天龙油墨有限公司,广东肇庆526000

出　　处：《包装学报》2024年第2期1-7,共7页Packaging Journal

基　　金：湖南省自然科学基金资助项目(2022JJ90002);2022年度湖南省大学生创新创业训练基金资助项目(5352,5356);湖南省教育厅科学研究基金资助项目(23A0433);2023年度湖南省大学生创新创业训练基金资助项目(4862)。

摘　　要：为探究水性油墨和印刷纸杯中可溶性铅和铜的溶出量,有效控制重金属迁移的安全风险,提出基于火焰原子吸收光谱法测定铜与铅元素的溶出量方法。先配制两种水性食品油墨即深红油墨和深绿油墨,并分析其性能,然后采用火焰原子吸收光谱法测定两种油墨和印刷纸杯中铜和铅的溶出量。实验结果表明:两种油墨的物理状态较为稳定,铜与铅元素在检测中质量浓度与光谱强度线性关系良好,其相对标准偏差分别为1.64%与2.24%,回收率分别在94.0%~101.0%和91.0%~94.8%之间;时间和温度对重金属溶出有较大影响,100℃条件下2 h的铅与铜溶出量分别是25℃条件下24 h铅与铜的8.3与2.36倍;深红墨的安全性高于深绿墨,所配制油墨及纸杯中铅与铜元素的溶出量在高温或长时间使用下存在超标的风险,因而需要严格控制材料制品与食物接触的时间和温度。所建立的方法快速简单、经济环保,可满足企业日常检验的要求。The dissolution of soluble lead and copper in water-based inks and printed paper cups was explored to effectively control their potential safety risks.By investigating the physical properties of the prepared ink of deep red and green,the dissolution of copper and lead in the two inks and printed paper cups was determined by flame atomic absorption spectrometry.The results showed that the physical states of the two inks were relatively stable,and the linear relationship of copper and lead was good in the range of their detection mass concentration.The RSDs were 1.64%and 2.24%,and the recoveries were 94.0%~101.0%and 91.0%~94.8%,respectively.Time and temperature had a great influence on the dissolution of heavy metals.The contents of lead and copper at 100℃for 2 h were 8.3 and 2.36 times those of lead and copper at 25℃for 24 h.The safety of deep red ink was higher than that of deep green ink,and the amounts of lead and copper dissolved in the formulated inks and cups were at risk of exceeding the standard at high temperatures or under prolonged use.Therefore,it was necessary to strictly control the time and temperature of contact between material products and food.The established method is fast,simple,economical and environmentally friendly,which can meet the requirements of daily inspection in enterprises.

关 键 词：火焰原子吸收光谱法 食品接触材料 水性油墨 印刷纸杯 重金属 溶出量 

分 类 号：TS802.3[轻工技术与工程] TS201.6