当前位置: 首页 > 文章 > 电感耦合等离子体原子发射光谱法测定凉粉草不同部位中22种无机元素的含量 食品科学 2015,36 (24) 168-171
Position: Home > Articles > Determination of 22 Inorganic Elements in Different Parts of Mesona chinensis Benth by Inductively Coupled Plasma Optical Emission Spectroscopy(ICP-OES) FOOD SCIENCE 2015,36 (24) 168-171

电感耦合等离子体原子发射光谱法测定凉粉草不同部位中22种无机元素的含量

作  者:
周伟明;陈柳生;王如意
单  位:
广东食品药品职业学院
关键词:
凉粉草;微波消解;电感耦合等离子体原子发射光谱;重金属;无机元素
摘  要:
为测定凉粉草根、枝和叶中无机元素的含量,采用HNO3-H2O2消解体系,通过微波消解彻底有效地消解样品中的有机物,应用电感耦合等离子体原子发射光谱法测定Al、As、Ag、Ba、Bi、Ca等22种无机元素含量。结果表明,在优化条件下,待测各元素间相互干扰较小,22种元素在一定范围具有良好的线性关系,相关系数(r)均不小于0.999 6,检出限范围为0.000 1~0.019 0μg/m L,平均回收率为98.9%~103.4%,相对标准偏差为0.7%~5.2%(n=6)。实验方法快速、简便、准确、灵敏度高,能够准确测定凉粉草不同部位中22种无机元素含量。
译  名:
Determination of 22 Inorganic Elements in Different Parts of Mesona chinensis Benth by Inductively Coupled Plasma Optical Emission Spectroscopy(ICP-OES)
作  者:
ZHOU Weiming;CHEN Liusheng;WANG Ruyi;Guangdong Food and Drug Vocational College;
关键词:
Mesona chinensis Benth;;microwave digestion;;inductively coupled plasma optical emission spectroscopy(ICP-OES);;heavy metal;;inorganic elements
摘  要:
This paper proposes a method to determine the contents of 22 inorganic elements in different parts of Mesona chinensis Benth by inductively coupled plasma optical emission spectroscopy(ICP-OES). HNO3-H2O2 digestion system was used to completely decompose the organic compounds by microwave digestion. The calibration curves showed a good linear relationship for all investigated analytes(r ≥ 0.999 6) with limits of detection of 0.000 1–0.019 0 μg/m L. The average recovery rates were 98.9%–103.4%, with a relative standard deviation(RSD) of 0.7%–5.2%(n = 6). The method is quick, easy, accurate and highly sensitive and can be used to accurately determine the contents of 22 inorganic elements in different parts of Mesona chinensis Benth.

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