| 烟叶中微量元素的电热蒸发ICP-AES法直接分析研究 |
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| 引用本文： | 陈世忠.烟叶中微量元素的电热蒸发ICP-AES法直接分析研究[J].光谱学与光谱分析,2003,23(2):358-360. |
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| 作者姓名： | 陈世忠 |
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| 作者单位： | 武汉工业学院重点实验室,湖北,武汉,430023 |
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| 基金项目： | 湖北省教育厅科学研究重点项目:(批准号:2002A01011)资助 |
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| 摘 要： | 本文以聚四氟乙烯(PTFE)悬浮体为化学改进剂,采用悬浮体制样电热蒸发(ETV)ICP-AES法直接测定了烟叶中微量元素(Cu,Fe,Al,Cr,Mn)的含量。研究了待测物的氟化蒸发行为,考察了化学改进剂PTFE浓度、灰化温度、蒸发温度、共存离子对待测物信号强度的影响。在优化实验条件下,方法的检出限为3.8ng·mL~(-1)(Cu)～13ng·mL~(-1)(Fe),相对标准偏差为2.5％(Cu)～5.7％(Cr),回收率在91.0％～112％。
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| 关 键 词： | 电热蒸发 ICP-AES 微量元素 聚四氟乙烯 烟叶 |
| 文章编号： | 1000-0593(2003)02-0358-03 |
| 修稿时间： | 2002年1月21日 |
Direct Analysis of Trace Elements in Tobacco Using Electrothermal Vaporization ICP-AES |
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| CHEN Shi-zhong
Key Laboratory,Wuhan Polytechnic University,Wuhan ,China.Direct Analysis of Trace Elements in Tobacco Using Electrothermal Vaporization ICP-AES[J].Spectroscopy and Spectral Analysis,2003,23(2):358-360. |
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| Authors: | CHEN Shi-zhong
Key Laboratory Wuhan Polytechnic University Wuhan China |
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| Institution: | Key Laboratory, Wuhan Polytechnic University, Wuhan 430023, China. |
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| Abstract: | A method for direct analysis of trace elements (Cu, Fe, Al, Cr and Mn) in tobacco by slurry sampling electrothermal vaporization (ETV) ICP-AES using polytetrafluoroethylene (PTFE) emulsion as a chemical modifier was described. The main factors affecting the analytical signals were studied. The detection limits of this method for the determination of the interesting elements were in the range of 3.8 ng.mL-1 (Cu) to 13 ng.mL-1 (Fe), and the relative standard deviations (RSD) varied from 2.5% (Cu) to 5.7% (Cr) with the recoveries of 91.0%-112%. |
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| Keywords: | Electrothermal vaporization Polytetrafluoroethylene emulsion ICP-AES Tobacco Trace elements |
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