湖北农业科学 ›› 2022, Vol. 61 ›› Issue (23): 155-159.doi: 10.14088/j.cnki.issn0439-8114.2022.23.031

• 检测分析 • 上一篇    下一篇

石墨消解-电感耦合等离子体质谱法快速测定动物肌肉中十种无机元素含量

王晓1, 常晨阳2, 邵丽1, 伦才智3   

  1. 1.中华人民共和国枣庄海关,山东 枣庄 277000;
    2.中华人民共和国聊城海关,山东 聊城 252000;
    3.中华人民共和国临沂海关,山东 临沂 276034
  • 收稿日期:2022-08-25 出版日期:2022-12-10 发布日期:2023-01-27
  • 作者简介:王 晓(1986-),女,山东泰安人,工程师,主要从事食品安全检测与控制研究,(电话)18866329708(电子信箱)574295690@126.com。
  • 基金资助:
    海关总署科研项目(2021HK164; 2020HK200)

Rapid determination of ten inorganic elements in animal muscle by graphite digestion-inductively coupled plasma mass spectrometry

WANG Xiao1, CHANG Chen-yang2, SHAO Li1, LUN Cai-zhi3   

  1. 1. Zaozhuang Customs District P. R. China, Zaozhuang 277000, Shandong, China;
    2. Liaocheng Customs District P. R. China, Liaocheng 252000, Shandong, China;
    3. Linyi Customs District P. R. China, Linyi 276034, Shandong, China
  • Received:2022-08-25 Online:2022-12-10 Published:2023-01-27

摘要: 建立石墨消解-电感耦合等离子体质谱法测定动物肌肉中10种重金属含量的方法,并对各元素含量进行分析。以鸡肉等为原料,优化消解试剂种类、用量、消解时间、温度等参数来确定最优的石墨消解条件,并通过在线内标加入法排除基体干扰。结果表明,铬、锰、钴、镍、铜、砷、镉、铅8种元素在质量浓度为0~500 ng/mL水平上,铁、锌元素在质量浓度0~1 000 ng/mL水平上均线性关系良好(r≥0.999 9),各元素的加标回收率为88.5%~99.3%,RSD为0.15%~1.64%(n=6)。实际样品测定中,5种动物肌肉中的铬、砷、镉、铅4种有害元素含量均低于国家现行标准的限量要求,锰、铁、铜、锌4种人体必需元素含量较为丰富。该石墨消解-电感耦合等离子体质谱法适用于动物肌肉中铬、锰、铁、钴、镍、铜、锌、砷、镉、铅10种元素含量的简单、快速、准确测定。

关键词: 动物肌肉, 石墨消解, 电感耦合等离子体质谱法, 元素

Abstract: A method was established for the determination of ten elements in animal muscle by graphite digestion-inductively coupled plasma mass spectrometry and the contents of each element were analyzed. With chicken as raw material, the type, dosage, digestion time, temperature and other parameters of the digestion reagent were optimized to determine the optimal graphite digestion conditions, and the matrix interference was eliminated by the on-line internal standard addition method. The results showed that chromium, manganese, cobalt, nickel, copper, arsenic, cadmium and lead had a good linear relationship at the mass concentration of 0~500 ng/mL, and iron and zinc had a good linear relationship at the mass concentration of 0~1 000 ng/mL (r≥ 0.999 9). The recovery rate of each element was 88.5%~99.3%, and the RSD was 0.15%~1.64%(n=6). In the actual sample determination, the contents of chromium, arsenic, cadmium and lead in five kinds of animal muscles were lower than the limit requirements of the current national standards, and the contents of manganese, iron, copper, zinc 4 kinds of human body essential elements were abundant. The graphite digestion-inductively coupled plasma mass spectrometry method was suitable for the simple, rapid and accurate determination of 10 elements of chromium, manganese, iron, cobalt, nickel, copper, zinc, arsenic, cadmium and lead in animal muscle.

Key words: animal muscle, graphite digestion, inductively coupled plasma mass spectrometry(ICP-MS), element

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