沙棘油中多元素的电感耦合等离子体质谱分析

发布时间：2018-06-24 02:44

本文选题：沙棘油 + 多元素　；参考：《中国油脂》2016年10期

【摘要】：建立正己烷稀释沙棘油,电感耦合等离子体质谱法(ICP-MS)测定其中Na、Mg、Si、P、K、Ca、Ti、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、As、Se、Sr 18种无机元素含量的分析方法。易挥发有机溶剂直接进样,会增加等离子体的负载,同时会在炬管和质谱锥上形成积炭,选择最佳仪器工作参数并采用加氧除炭,维持了等离子体的正常稳定运行。针对测定过程中产生的质谱干扰,利用碰撞反应池技术进行校正。选择多元素内标溶液消除了基体效应。结果表明:该方法的检出限在0.17~61.33ng/g之间,样品的加标回收率为92.10%~103.50%,相对标准偏差(RSD)小于等于4.09%。沙棘油中富含大量人体必需的Na、P、Ca、Mg、Fe、Mn、Zn等营养元素。方法采用正己烷稀释沙棘油后直接进行测定,具有样品处理简单、操作快速、检出限低、准确性好等特点,可用于沙棘油中多元素的快速分析。
[Abstract]:An inductively coupled plasma-mass spectrometry (ICP-MS) method for the determination of 18 inorganic elements in Nahmg-SiP- (K) (K _ (+) C _ (+) (n) -hexane diluted seabuckthorn (Hippophae rhamnoides) oil by inductively coupled plasma mass spectrometry (ICP-MS) has been developed. The direct injection of volatile organic solvent increases the plasma load and coals on the torch tube and mass spectrometric cone. The optimum instrument parameters are selected and the oxygen is added to remove the carbon to maintain the normal and stable operation of the plasma. The collision reaction cell technique was used to correct the mass spectrum interference. The matrix effect was eliminated by selecting multi-element internal standard solution. The results showed that the detection limit of the method was between 0.17~61.33ng/g and the recoveries of the samples were 92.10 ~ 103.50 and the relative standard deviation was less than or equal to 4.09. Hippophae rhamnoides oil is rich in a large amount of essential nutrients, such as Nahophane, Mg-Mg-Mn-Mn-Zn, and so on. Methods using n-hexane to dilute the oil of Hippophae rhamnoides, the method has the advantages of simple sample treatment, rapid operation, low detection limit and good accuracy. It can be used for the rapid analysis of multi-elements in seabuckthorn oil.
【作者单位】：湖南工学院材料与化学工程学院;长江师范学院化学化工学院;
【基金】：国家自然科学基金(21271187) 重庆市高校优秀成果转化资助项目(KJZH14217) 湖南省教育厅重点科研项目(14A035) 湖南省重点学科建设项目(湘教发[2011]76号)
【分类号】：TQ646;O657.63

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