| 风冷回流消解-电感耦合等离子体质谱法同时测定植物样品中46个元素 |
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| 引用本文： | 藏吉良,李志伟,赵伟,刘延霞,严洁.风冷回流消解-电感耦合等离子体质谱法同时测定植物样品中46个元素[J].岩矿测试,2012,31(2):247-252. |
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| 作者姓名： | 藏吉良 李志伟 赵伟 刘延霞 严洁 |
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| 作者单位： | 1. 河南省核工业地质局,河南郑州,450012
2. 河南省岩石矿物测试中心,河南郑州450012;河南省金属矿产成矿地质过程与资源利用重点实验室,河南郑州450012 |
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| 摘 要： | 采用HNO3-H2O2体系对植物样品进行风冷回流消解,电感耦合等离子体质谱法(ICP-MS)同时测定植物样品中46个元素的含量。将称有样品的磨口锥形瓶加装风冷管后直接放在普通平板铝块电热板上,一次可对45个锥形瓶回流装置同时进行加热,不需要严格地规定消解时间,保证回流加热微沸消解至消解完全即可。植物标准物质(GBW 10012、GBW 10014和GBW 10019)的分析结果与标准值相一致,方法精密度(RSD,n=6)为0.44%～5.59%。与干法灰化消解和微波消解等样品处理方法相比较,操作简单快捷,试剂用量少,空白值较低,溶液盐度较小,有利于植物样品中多元素ICP-MS同时测定。采用调试液调节ICP-MS仪器测定的最佳化,确定了ICP-MS测定的最佳条件,同时探讨了元素之间的干扰关系,采用数学校正法有效地消除了测定的干扰。
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| 关 键 词： | 植物样品 46个元素 回流消解 电感耦合等离子体质谱法 |
| 收稿时间： | 2011/2/11 0:00:00 |
Determination of 46 Kinds of Elements in Plant Samples by Inductively Coupled Plasma-Atomic Emission Spectrometry with Air-cooled Reflux Digestion |
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| ZANG Ji-liang,LI Zhi-wei,ZHAO Wei,LIU Yan-xia and YAN Jie.Determination of 46 Kinds of Elements in Plant Samples by Inductively Coupled Plasma-Atomic Emission Spectrometry with Air-cooled Reflux Digestion[J].Rock and Mineral Analysis,2012,31(2):247-252. |
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| Authors: | ZANG Ji-liang LI Zhi-wei ZHAO Wei LIU Yan-xia and YAN Jie |
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| Institution: | Nuclear Industry Geological Bureau of Henan Province, Zhengzhou 450012, China;Henan Rock Mineral Testing Centers, Zhengzhou 450012, China; Henan Key Laboratory of Geological Processes of Metal Mineral Resources and Utilization, Zhengzhou 450012, China;Henan Rock Mineral Testing Centers, Zhengzhou 450012, China; Henan Key Laboratory of Geological Processes of Metal Mineral Resources and Utilization, Zhengzhou 450012, China;Henan Rock Mineral Testing Centers, Zhengzhou 450012, China; Henan Key Laboratory of Geological Processes of Metal Mineral Resources and Utilization, Zhengzhou 450012, China;Henan Rock Mineral Testing Centers, Zhengzhou 450012, China; Henan Key Laboratory of Geological Processes of Metal Mineral Resources and Utilization, Zhengzhou 450012, China |
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| Abstract: | Plant samples were dissolved with HNO3 and H2O2 respectively in grinding conical flask placed directly on an ordinary flat aluminum electrothermal plate with an air-cooled tube. The reflux devices, consisting of 45 conical flasks can be heated simultaneously. This method keeps the sample solution under slight boiling conditions to digest the sample completely rendering the critical digestion time unnecessary. The 46 kinds of element contents in samples were determined simultaneously by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). The standard reference materials for the plants(GBW 10012, GBW 10014 and GBW 10019)were analyzed and the results were in good agreement with the certified values. The relative standard deviations (n=6) ranged from 0.44% to 5.59%. Compared to the methods of microwave digestion and dry ashing, this method is simple, rapid, uses less reagents and has lower blank and salinity which make it convenient for multi-elements measurements of plant sample by ICP-MS. The operating conditions of the ICP-MS were optimized by using debugging hydraulics, and the interference relationship was studied. The interference of determination was eliminated effectively by using a mathematical model. |
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| Keywords: | plant samples 46 kinds of elements refulux digestion inductively coupled plasma-mass spectrometry |
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