原子吸收光谱法测定塑料食品包装材料中有害重金属  

Determination of harmful heavy metals in plastic food packaging materials by atomic absorption spectrometry

作　　者：杨茜 Yang Qian(Xiangxi Tujia and Miao Autonomous Prefecture Quality Inspection and Metrology Verification Center,Xiangxi 416000,China)

机构地区：[1]湘西土家族苗族自治州质量检验及计量检定中心,湖南湘西416000

出　　处：《现代盐化工》2023年第3期20-22,共3页Modern Salt and Chemical Industry

摘　　要：在国内,塑料食品包装因具有独特的耐腐蚀性、防潮性而被广泛使用,铅、铜、锌等是塑料食品包装袋的主要重金属污染元素,我国已发布的重金属检验最直接的方法是比色法。采用原子吸收光谱法测定聚对苯二甲酸乙二醇酯(PET)材料中的重金属含量,结果表明,标准曲线均呈现良好的线性关系,检出限为0.009~0.125 mg/kg。与国家标准中的比色法相比,原子吸收光谱法具有可操作性强、测定数据准确度高等优点,可广泛应用于PET材料中重金属的快速检测。Plastic food packaging is widely used in China because of its unique corrosion resistance and moisture resistance.Lead,copper and zinc are the main heavy metal pollution elements in plastic food packaging.The most direct determination method for heavy metals published in China is colorimetry.The determination of heavy metals in polyethylene terephthalate(PET) materials by atomic absorption spectrometry showed that the standard curves all showed a good linear relationship,the detection limit was between 0.009 and 0.125 mg/kg.Compared with the colorimetry in the national standard,atomic absorption spectrometry has the advantages of strong operability and high accuracy of determination data,and can be widely used for rapid detection of heavy metals in PET materials.

关 键 词：原子吸收光谱法 塑料食品包装材料 有害金属测定 

分 类 号：TS206.4[轻工技术与工程—食品科学] O657.31[轻工技术与工程—食品科学与工程]