| 超声-索氏萃取-重量法测定土壤中总石油烃含量 |
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| 引用本文： | 王如刚,王敏,牛晓伟,唐景春.超声-索氏萃取-重量法测定土壤中总石油烃含量[J].分析化学,2010,38(3). |
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| 作者姓名： | 王如刚 王敏 牛晓伟 唐景春 |
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| 作者单位： | 南开大学环境科学与工程学院,环境污染过程与基准教育部重点实验室,天津,300071 |
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| 基金项目： | 863重点项目“微生物-植物联合原位生态修复技术处理中低浓度石油污染土壤”(No.2007AA061201);;天津市应用基础及前沿技术研究计划(No.09JCYBJC08800);;中国科学院知识创新工程(No.kzcx1-yw-06-03)资助项目 |
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| 摘 要： | 采用正交实验设计,分别对超声萃取法(UE)和超声-索氏萃取法(USE)测定土壤中总石油烃(TPH)的影响因素进行分析,获得优化条件。采用以上两种方法及传统的索氏萃取法(SE)对新鲜石油污染土、微生物修复土和老化植物修复土进行提取。结果表明:超声萃取法的优化条件为选用15mL三氯甲烷,萃取4次;超声-索氏萃取法的优化条件为60W超声萃取10min,萃取剂用量125mL,萃取6h;超声-索氏萃取法平均回收率最高,为102.98%,且数据稳定可靠;其次是超声萃取法,为99.69%;而传统的索氏萃取法最低,为97.31%。研究证明超声-索氏分析法在缩短测定时间的同时提高了回收率,可作为不同土壤中总石油烃(TPH)含量测定的新方法。
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| 关 键 词： | 土壤 总石油烃 超声-索氏萃取法 正交实验设计 |
Determination of Total Petroleum Hydrocarbons Content in Soil by Ultrasonic-Soxhlet Extraction-Gravimetric Analysis |
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| WANG Ru-Gang,WANG Min,NIU Xiao-Wei,TANG Jing-Chun.Determination of Total Petroleum Hydrocarbons Content in Soil by Ultrasonic-Soxhlet Extraction-Gravimetric Analysis[J].Chinese Journal of Analytical Chemistry,2010,38(3). |
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| Authors: | WANG Ru-Gang WANG Min NIU Xiao-Wei TANG Jing-Chun |
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| Institution: | College of Environmental Science and Engineering;NanKai University/Key Laboratory of Pollution processes and Environmental Criteria;Ministry of Education;Tianjin 300071 |
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| Abstract: | The influencing factors of ultrasonic extraction( UE) and ultrasonic-soxhlet extraction( USE) were analyzed based on orthogonal experimental design. The optimum analytical conditions of two methods were determined. The three different methods: UE,USE and traditional soxhlet extraction( SE) were compared by simultaneous analysis with three different soil samples: fresh contaminated soil,soil after microbial remediation and soil after phytoremediation. The optimum condition of the UE was extracting 4 times wi... |
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| Keywords: | Soil Total petroleum hydrocarbons Ultrasonic-soxhlet extraction Orthogonal experimental design |
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