电感耦合等离子体质谱法分析灵芝孢子油中的微量元素含量
发布时间:2019-05-20 01:18
【摘要】:食品中的微量元素分析对食品安全控制与营养评价有着重要的意义,为正确评价灵芝孢子油的食用、药用价值提供参考。取市售灵芝孢子油,运用微波消解仪消解灵芝孢子油样品,消解过程采用硝酸+双氧水酸体系预处理,减少了酸的使用,消解更完全。利用电感合等离子体质谱仪(ICP-MS)在碰撞模式下测定灵芝孢子油中24种微量元素含量。实验结果表明,灵芝孢子油中含量丰富的有益微量元素,尤其以Ca、P、Mg、Fe、K和Zn的含量居多,其次为Na、Sn、Sr、Cr、Cu、B和Mn;有害微量元素Pb、As和Hg含量符合保健食品污染物限量要求。对于所测元素,Hg的线性范围为0~1μg/L,其他元素的线性范围为0~100μg/L,仪器检出限在0.03~7.0μg/L之间,方法定量限在0.1~23.33μg/kg之间,加标回收率在84.16%~107.00%之间,相对标准偏差0.83%~4.25%(n=6)之间。研究发现该方法精密度、灵敏度高,结果可靠。
[Abstract]:The analysis of trace elements in food is of great significance for food safety control and nutrition evaluation, and provides a reference for the correct evaluation of edible and medicinal value of Ganoderma lucidum spore oil. The sample of Ganoderma lucidum spore oil was digested by microwave digestion instrument, and the digestion process was pretreated with nitric acid hydrogen peroxide system, which reduced the use of acid and digested it more completely. The contents of 24 trace elements in Ganoderma lucidum spore oil were determined by inductor plasma mass spectrometry (ICP-MS) in collision mode. The results showed that Ganoderma lucidum spore oil was rich in beneficial trace elements, especially Ca,P,Mg,Fe,K and Zn, followed by Na,Sn,Sr,Cr,Cu,B and Mn;. The contents of harmful trace elements Pb,As and Hg meet the limit requirements of health food pollutants. For the measured elements, the linear range of Hg is 0 ~ 1 渭 g / L, the linear range of other elements is 0 ~ 100 渭 g / L, the detection limit of the instrument is 0.03 ~ 7.0 渭 g / L, and the quantitative limit of the method is 0.1 ~ 23.33 渭 g / kg. The recovery was 84.16% 鈮,
本文编号:2481235
[Abstract]:The analysis of trace elements in food is of great significance for food safety control and nutrition evaluation, and provides a reference for the correct evaluation of edible and medicinal value of Ganoderma lucidum spore oil. The sample of Ganoderma lucidum spore oil was digested by microwave digestion instrument, and the digestion process was pretreated with nitric acid hydrogen peroxide system, which reduced the use of acid and digested it more completely. The contents of 24 trace elements in Ganoderma lucidum spore oil were determined by inductor plasma mass spectrometry (ICP-MS) in collision mode. The results showed that Ganoderma lucidum spore oil was rich in beneficial trace elements, especially Ca,P,Mg,Fe,K and Zn, followed by Na,Sn,Sr,Cr,Cu,B and Mn;. The contents of harmful trace elements Pb,As and Hg meet the limit requirements of health food pollutants. For the measured elements, the linear range of Hg is 0 ~ 1 渭 g / L, the linear range of other elements is 0 ~ 100 渭 g / L, the detection limit of the instrument is 0.03 ~ 7.0 渭 g / L, and the quantitative limit of the method is 0.1 ~ 23.33 渭 g / kg. The recovery was 84.16% 鈮,
本文编号:2481235
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