微波消解-电感耦合等离子体发射光谱法测定食品中锡含量的方法研究
目的 建立微波消解-电感耦合等离子体发射光谱法(inductively coupled plasma optical emission spectroscopy, ICP-OES)测定食品中锡含量的方法。方法 采用5 mL硝酸+1 mL盐酸的酸体系对样品进行微波消解前处理, 并在90 ℃下赶酸, 再用电感耦合等离子发射光谱法以189.925 nm为分析谱线, 测定食品中锡含量。结果 该方法线性范围为0.01~ 5.00 mg/L, 相关系数大于0.999。方法检出限为0.7 mg/kg, 方法定量限为2.4 mg/kg, 多种基质样品的结果相对标准偏差＜5%, 加标回收率在100.2%~109.4%。结论 该方法操作简便快捷, 结果准确, 精密度高, 灵敏度高, 干扰少, 适用于食品中锡的分析。
Objective To establish a method for the determination of tin in food by microwave digestion-inductively coupled plasma optical emission spectrometry (ICP-OES). Methods The samples were pretreated with 5 mL nitric acid and 1 mL hydrochloric acid before microwave digestion. The samples were driven out of acid at 90 ℃, and then the content of tin in food was determined by ICP-OES with 189.925 nm as the analytical line. Results The linear range of this method was 0.01–5.00 mg/L with correlation coefficient greater than 0.999. The method detection limit was 0.7 mg/kg, the quantification limit was 2.4 mg/kg. The relative standard deviation of the results of multiple matrix samples was less than 5%, and the spike recovery was 100.2%-109.4%. Conclusion The method is simple to operate, with accurate results, high precision, high sensitivity and less interference, and is suitable for the analysis of tin in food.
标题：微波消解-电感耦合等离子体发射光谱法测定食品中锡含量的方法研究
英文标题：Research on determination of tin in food by inductively coupled plasma optical emission spectroscopy with microwave digestion
作者：
蔡展帆 广东省食品检验所
张佩霞 广东省食品检验所
章锦涵 广东省食品检验所
胡文敏 广东省食品检验所
高齐 广东省食品检验所
周忆莲 广东省食品检验所
林辉焕 广东省食品检验所
熊欣 广东省食品检验所
梁旭霞 广东省食品检验所
中文关键词:锡,盐酸,微波消解,电感耦合等离子发射光谱法,
英文关键词:tin,hydrochloric acid,microwave digestion,inductively coupled plasma optical emission spectroscopy,
发表日期：2020-06-01
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