| 加速溶剂萃取提取土壤中正构烷烃的方法研究 |
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| 引用本文： | 石丽明,刘美美,王晓华,孙青,储国强.加速溶剂萃取提取土壤中正构烷烃的方法研究[J].岩矿测试,2010,29(2):104-108. |
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| 作者姓名： | 石丽明 刘美美 王晓华 孙青 储国强 |
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| 作者单位： | 1. 国家地质实验测试中心,北京,100037
2. 中国科学院地质与地球物理研究所,北京,100029 |
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| 基金项目： | 国家自然科学基金项目资助，国土资源部百人计划项目资助，国家地质实验测试中心基本科研业务费项目资助，国土资源部地质大调查项目资助 |
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| 摘 要： | 建立了加速溶剂萃取技术提取-柱色谱分离-气相色谱分析土壤样品中正构烷烃的方法。优化了压力、温度、静态时间、循环次数等参数。随着温度、静态时间、循环次数和压力的增加,正构烷烃短碳链、长碳链和总正构烷烃的量逐渐增加。加速溶剂萃取提取土壤中正构烷烃的条件是:萃取温度150℃,萃取压力10.3 MPa,循环2次,静态提取时间10 min。加速溶剂萃取-柱色谱分离-气相色谱法测定土壤中正构烷烃的方法精密度(RSD)为8%~23%。加速溶剂萃取法提取总正构烷烃量、短碳链正构烷烃量显著高于索氏抽提法的提取量。
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| 关 键 词： | 加速溶剂萃取 索氏抽提 正构烷烃 土壤 |
| 收稿时间： | 2009/2/11 0:00:00 |
| 修稿时间： | 2009/12/10 0:00:00 |
Study on Accelerated Solvent Extraction of n-alkanes in Soil Samples |
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| SHI Li-ming,LIU Mei-mei,WANG Xiao-hua,SUN Qing,CHU Guo-qiang.Study on Accelerated Solvent Extraction of n-alkanes in Soil Samples[J].Rock and Mineral Analysis,2010,29(2):104-108. |
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| Authors: | SHI Li-ming LIU Mei-mei WANG Xiao-hua SUN Qing CHU Guo-qiang |
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| Institution: | 1.National Research Center for Geoanalysis,Beijing 100037,China;2.Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China) |
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| Abstract: | The paper described the determination of n-alkanes in soil samples by gas chromatography with accelerated solvent extraction (ASE) for sample pretreatment. The main factors which affect the extraction yield of n-alkanes by ASE, such as the temperature, pressure, static time and cycle times were discussed. The results showed that the optimum parameters for n-alkanes extraction from soil samples were: temperature of 150℃, pressure of 10.3 MPa, static time of 10 min and 2 cycles. The precision of method was 8% to 23%RSD. The results also showed that the extraction efficiency of total n-alkanes and short carbon chain n-alkanes by ASE was superior to the conventional Soxhlet extraction.The paper described the determination of n-alkanes in soil samples by gas chromatography with accelerated solvent extraction (ASE) for sample pretreatment. The main factors which affect the extraction yield of n-alkanes by ASE, such as the temperature, pressure, static time and cycle times were discussed. The results showed that the optimum parameters for n-alkanes extraction from soil samples were: temperature of 150℃, pressure of 10.3 MPa, static time of 10 min and 2 cycles. The precision of method was 8% to 23%RSD. The results also showed that the extraction efficiency of total n-alkanes and short carbon chain n-alkanes by ASE was superior to the conventional Soxhlet extraction. |
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| Keywords: | accelerated solvent extraction Soxhlet extraction n-alkanes soil |
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