| 微波消解-石墨炉原子吸收法测定土壤中铊 |
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| 引用本文： | 张艳,罗岳平,黄钟霆,张四梅,高雯媛,毕军平,邢宏霖.微波消解-石墨炉原子吸收法测定土壤中铊[J].中国环境监测,2016,32(3):110-114. |
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| 作者姓名： | 张艳 罗岳平 黄钟霆 张四梅 高雯媛 毕军平 邢宏霖 |
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| 作者单位： | 湖南省环境监测中心站, 湖南 长沙 410000,湖南省环境监测中心站, 湖南 长沙 410000,湖南省环境监测中心站, 湖南 长沙 410000,中共湖南省委党校, 湖南 长沙 410000,湖南省环境监测中心站, 湖南 长沙 410000,湖南省环境监测中心站, 湖南 长沙 410000,湖南省环境监测中心站, 湖南 长沙 410000 |
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| 基金项目： | 湖南省科技计划项目(2015SK2051);湖南省地方标准制修订项目(201400486) |
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| 摘 要： | 通过研究土壤消解体系、混合基体改进剂的使用、石墨管类型的选择和标准加入定量过程对测定结果的影响,建立了适用于土壤中重金属铊的微波消解-平台石墨炉原子吸收方法。结果表明,使用HNO_3-HF-H_2O_2消解体系对土壤进行微波消解,石墨炉原子吸收测定过程采用Pd(NO_3)_2/Mg(NO_3)_2混合基体改进剂和平台石墨管,土壤中铊的检出限可达0.05 mg/kg,线性相关系数为0.996,加标回收率在95.0%~105.0%。使用该方法测得的结果与ICP-MS法比较,无统计学差异。改进后的方法具有简单快捷、灵敏度高、重现性好、线性范围广、结果准确等优势,易于推广使用。
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| 关 键 词： | 微波消解 平台石墨管 石墨炉原子吸收 土壤 铊 |
| 收稿时间： | 2015/5/21 0:00:00 |
| 修稿时间： | 2015/10/14 0:00:00 |
Determination of Thallium in Soil by Mixing Matrix Modifier-Platform Graphite Furnace Method with Microwave Digestion |
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| ZHANG Yan,LUO Yueping,HUANG Zhongting,ZHANG Simei,GAO Wenyuan,BI Junping and XING Honglin.Determination of Thallium in Soil by Mixing Matrix Modifier-Platform Graphite Furnace Method with Microwave Digestion[J].Environmental Monitoring in China,2016,32(3):110-114. |
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| Authors: | ZHANG Yan LUO Yueping HUANG Zhongting ZHANG Simei GAO Wenyuan BI Junping and XING Honglin |
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| Institution: | Hunan Environmental Monitoring Centre, Changsha 410000, China,Hunan Environmental Monitoring Centre, Changsha 410000, China,Hunan Environmental Monitoring Centre, Changsha 410000, China,Party School of Hunan Committee CPC, Changsha 410000, China,Hunan Environmental Monitoring Centre, Changsha 410000, China,Hunan Environmental Monitoring Centre, Changsha 410000, China and Hunan Environmental Monitoring Centre, Changsha 410000, China |
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| Abstract: | A novel method for the determination of thallium in soil was developed by means of microwave digestion and platform graphite furnace atomic absorption spectrometry. The use of matrix modifiers and the graphite tube types to the improvement of thallium determination were explored. The results showed that more sensitive determination results were obtained by using HNO3-HF-H2O2 digestion system and adding mixed matrix modifiers Pd(NO3)2/Mg(NO3)2 with platform graphite tube. The linear correlation coefficient was 0.996, and the limit of detection was 0.05 mg/kg. The recovery of the spiked soil samples were from 95.0% to 105.0%. The determination results are no significant difference compared with that obtained from expensive ICP-MS method. The developed method is simple, fast, sensitive, accurate, and suitable for the determination of thallium in soil. |
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| Keywords: | microwave digestion platform graphite tube graphite furnace atomic absorption spectrometry soil thallium |
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