| 大气颗粒物中多环芳烃的索氏提取研究 |
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| 引用本文： | 杨坪,龚必辅,熊英,彭蓉.大气颗粒物中多环芳烃的索氏提取研究[J].中国环境监测,1999(6). |
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| 作者姓名： | 杨坪 龚必辅 熊英 彭蓉 |
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| 作者单位： | 四川省环境监测中心站!四川成都610041 |
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| 摘 要： | 通过对大气颗粒物中多环芳烃的索氏提取过程中的不同阶段的提取液中多环芳烃的分析 ,绘制了索氏提取曲线 ,发现提取效率主要取决于提取循环次数 ,而与提取浸泡时间关系不大。通过比较 1 1种提取液对加标参考物和实验参考物的索氏提取效率 ,发现常用的环己烷、苯等提取液提取效率很低。提取能力的序列为喹啉 乙醇 >吡啶 乙醇 >丙酮>乙醇 >二氯甲烷 >苯 >环己烷 >石油醚 >丙酮 乙醇 环己烷 >氯仿 >四氢呋喃。
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| 关 键 词： | 大气颗粒物 多环芳烃 索氏提取 |
Study of Soxhlet extraction of polycyclic aromatic hydrocarbons on airborne particulate |
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| YANG Ping,et al.Study of Soxhlet extraction of polycyclic aromatic hydrocarbons on airborne particulate[J].Environmental Monitoring in China,1999(6). |
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| Authors: | YANG Ping |
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| Abstract: | In this paper, we have determined polycyclic aromatic hydrocarbon concentrations in extract solvent of airborne particulate in different steps of Soxhlet extraction, and drawn out the Soxhlet extraction curves, then we find the extract efficient mainly depend on extract cycle numbers, do not depend on extract soak time By comparing Soxhlet extract efficient of eleven kinds of extract solvents to adding standard reference matter and research reference matter, we found cyclohexane and benzene as extract solvents most in use were badly efficient extract solvents The order of extract efficient of the extract solvents is as follow: quinoline ethanol, pyridine ethanol, acetone, ethanol, dichloromethane, benzene, cyclohexane, petroleum ether, acetone ethanol cyclohexane, trichloromethane, and tetrahydrofuran |
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| Keywords: | airborne particulate polycyclic aromatic hydrocarbons Soxhlet extraction |
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