| 采用微波消解原子荧光光谱法测定煤中的汞 |
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| 引用本文： | 郭欣,贾小红,郑楚光,孙涛.采用微波消解原子荧光光谱法测定煤中的汞[J].华中科技大学学报(自然科学版),2003,31(11):66-68. |
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| 作者姓名： | 郭欣 贾小红 郑楚光 孙涛 |
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| 作者单位： | 华中科技大学煤燃烧国家重点实验室 |
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| 基金项目： | 国家重点基础研究专项经费资助项目 (G1 9990 2 2 1 2 ) |
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| 摘 要： | 采用密闭微波方法快速消解煤、煤灰试样中的汞，并使用汞还原原子荧光光谱法进行测定．通过大量实验，比较了不同的酸体系及微波消解过程．其中煤样中汞的测定，选择体系为V2O5-HNO3-H2SO4-H2O2．灰样中汞的测定，选择体系为HNO3-HCl-HBO3．该方法能有效地将样品中的汞全部溶出，消化时间缩短至1h以内，并保证较低的分析空白,方法准确度经标准参考物质及加标回收实验验证，结果令人满意．
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| 关 键 词： | 煤燃烧 煤灰 微波消解 汞 原子荧光光谱法 测定 |
| 文章编号： | 1671-4512(2003)11-0066-03 |
| 修稿时间： | 2003年5月12日 |
Microwave digestion method for the determinationof mercury in coal and coal ash |
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| Guo Xin Jia Xiaohong Zheng Chuguang Sun Tao Lect., State Key Lab. of Coal Combustion,Huazhong Univ. of Sci. & Tech.,Wuhan ,China..Microwave digestion method for the determinationof mercury in coal and coal ash[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2003,31(11):66-68. |
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| Authors: | Guo Xin Jia Xiaohong Zheng Chuguang Sun Tao Lect State Key Lab of Coal Combustion Huazhong Univ of Sci & Tech Wuhan China |
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| Institution: | Guo Xin Jia Xiaohong Zheng Chuguang Sun Tao Lect., State Key Lab. of Coal Combustion,Huazhong Univ. of Sci. & Tech.,Wuhan 430074,China. |
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| Abstract: | The efficiency of different digestion methods (three microwave decomposition methods and a wet acid digestion method for coal samples, two microwave digestion methods and a wet digestion method for coal ash) in the solubilisation of mercury was compared. Four homogenized coal samples, three coal fly ash and a certified reference materials were analyzed. The determinations were performed by atomic fluorescence spectrometry. Results showed that the method meets three demands: a . to digest all sample material completely and consistently; b . to reduce sample digestion time to less than one hour; c . to maintain a low analytical blank. |
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| Keywords: | coal coal ash microwave digestion mercury |
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