ICP-OES法测定密蒙花中多种元素

doi:10.7506/spkx1002-6630-201418018

食品科学

ICP-OES法测定密蒙花中多种元素

聂西度1，,*

1.湖南工学院材料与化学工程学院，湖南衡阳 421002；2.长江师范学院化学化工学院，重庆 408100

出版日期:2014-09-25 发布日期:2014-09-17
通讯作者: 符靓
基金资助:
国家自然科学基金面上项目（21075138）；重庆市教委科学技术研究重点项目（KJ1401209）；湖南省科技计划
项目（2013FJ3093）；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）

Determination of Multiple Elements in Flos Buddlejae by Inductively Coupled Plasma Optical Emission Spectrometry

NIE Xi-du1, FU Liang2,*

1. College of Material and Chemical Engineering, Hunan Institute of Technology, Hengyang 421002, China;
2. College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, China

Online:2014-09-25 Published:2014-09-17
Contact: FU Liang

摘要/Abstract

摘要：

建立电感耦合等离子体发射光谱法测定密蒙花中Na、Mg、P、K、Ca、Mn、Fe、Cu、Zn、Sr人体必需元素和Ni、As、Cd、Pb毒理性元素的分析方法。样品经（硝酸＋双氧水）密闭微波消解后用超纯水稀释后进行测定，确定各待测元素的分析波长，通过加入内标元素Y补偿待测元素分析信号的漂移，校正基体效应，改善分析信号的稳定性。在选定的操作条件下，各待测元素的检出限在0.011～25.16 μg/L之间，利用标准参考物质（NIST SRM 1515）验证分析方法的准确度和精密度，结果表明，标准物质的分析结果与参考值基本一致，相对标准偏差为2.0%～8.3%。方法简便、快速、准确，能实现密蒙花中多元素的快速分析。

关键词: 电感耦合等离子体发射光谱法, 密蒙花, 必需元素, 毒理性元素

Abstract:

A new method for the determination of essential elements (Na, Mg, P, K, Ca, Mn, Fe, Cu, Zn, and Sr) and toxic
elements (Ni, As, Cd, and Pb) in Flos Buddlejae was established using inductively coupled plasma optical emission spectrometry
(ICP-OES). Nitric acid and hydrogen peroxide were used jointly to achieve the complete decomposition of the organic matrix in a
closed-vessel microwave oven. Appropriate analysis lines for various elements were selected. Y as internal standard element was
used to compensate matrix effect and signal drift, and the stability of the instrument was improved. Under the optimal conditions,
the detection limits were 0.011–25.16 μg/L. The accuracy and precision of this method were confirmed through reference standard
materials (NIST SRM 1515, apple leaves). The results showed a good agreement between measured and predicted values for all
analyzed elements. The relative standard deviation (RSD) was in the range of 2.0% to 8.3%. This method proved simple, sensitive
and precise and could allow simultaneous multi-element determination of Flos Buddlejae.

Key words: inductively coupled plasma optical emission spectrometry, Flos Buddlejae, essential elements, toxic elements

中图分类号:

O657.63

聂西度1，符靓2,*. ICP-OES法测定密蒙花中多种元素[J]. 食品科学, doi: 10.7506/spkx1002-6630-201418018.

NIE Xi-du1, FU Liang2,*. Determination of Multiple Elements in Flos Buddlejae by Inductively Coupled Plasma Optical Emission Spectrometry[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201418018.

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ICP-OES法测定密蒙花中多种元素

Determination of Multiple Elements in Flos Buddlejae by Inductively Coupled Plasma Optical Emission Spectrometry

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