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| 顶空液相微萃取-GC/MS法测定土壤中的苯系物 | |
| 引用本文： | 张占恩,罗三姗,张丽君,张磊.顶空液相微萃取-GC/MS法测定土壤中的苯系物[J].现代科学仪器,2010(3):64-67. |
| 作者姓名： | 张占恩 罗三姗 张丽君 张磊 |
| 作者单位： | 1. 苏州科技学院江苏省环境科学与工程重点实验室,苏州,215011;苏州科技学院环境科学与工程学院,苏州,215011 2. 苏州科技学院环境科学与工程学院,苏州,215011 3. 苏州科技学院江苏省环境科学与工程重点实验室,苏州,215011 |
| 基金项目： | 江苏省普通高等学校"青蓝工程"中青年学术带头人培养基金资助项目 |
| 摘 要： | 研究了用顶空单滴液相微萃取技术萃取土壤中的苯系物,并与GC/MS法结合建立了测定土壤中痕量苯系物的方法。通过实验选择正辛醇为萃取剂。考察了影响萃取效果的的各种因素,得到最佳萃取条件为:土/水比为1∶5,样品体积为8mL,顶空体积为4mL,萃取剂体积为2μL,萃取温度为50℃,萃取时间为5min,搅拌速度为360rpm。在此条件下,方法的线性范围为0.0001～5mg/kg,最低检出限为0.00005mg/kg。用本方法测定了实际土壤样品中的苯系物,结果满意。 |
| 关 键 词： | 顶空液相微萃取 苯系物 样品前处理 土壤 |
Determination of Benzenes in Soil by Headspace Liquid-phase Microextraction-GC/MS |
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| Zhang Zhanen,Luo Sanshan,Zhang Lijun,Zhang Lei.Determination of Benzenes in Soil by Headspace Liquid-phase Microextraction-GC/MS[J].Modern Scientific Instruments,2010(3):64-67. | |
| Authors: | Zhang Zhanen Luo Sanshan Zhang Lijun Zhang Lei |
| Affiliation: | 1Jiangsu Key Laboratory of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215011; 2Department of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215011) |
| Abstract: | A method for the determination of benzenes in soil by headspeace single-drop liquid-phase microextrac-tion coupled with GC/MS was estiblished. Based on the experimental results, n-octanol was selected as the extraction solvent. Parameters impacting the performance of extraction were investigated and optimized, and the optimum extraction conditions were obtained as following： Ratio of soil to water 1：5, sample volume （soil ＋ water） 8 mL, headspace volume 4 mL, volume of extraction solvent 2μL, extraction temperature 50oC, extraction time 5min, stirring rate 360rpm. Under the selected extraction conditions, the linear range is 0.0001~5 mg/kg, the detection limits is 0.00005mg/kg. The proposed method has been successfully applied to determine benzenes in real soil samples with satisfactory results. |
| Keywords: | Headspace liquid-phase microextraction Benzenes Sample pretreatment Soil |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
