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首页> 外文期刊>Environmental Monitoring and Assessment >Application of portable gas chromatography-photo ionization detector combined with headspace sampling for field analysis of benzene, toluene, ethylbenzene, and xylene in soils
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Application of portable gas chromatography-photo ionization detector combined with headspace sampling for field analysis of benzene, toluene, ethylbenzene, and xylene in soils

机译：便携式气相色谱-光电离检测器结合顶空进样在土壤中苯，甲苯，乙苯和二甲苯现场分析中的应用

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摘要

A method based on headspace (HS) sampling coupling with portable gas chromatography (GC) with photo ionization detector (PID) was developed for rapid determination of benzene, toluene, ethylbenzene, and xylenes (BTEX) in soils. Optimal conditions for HS gas sampling procedure were determined, and the influence of soil organic matter on the recovery of BTEX from soil was investigated using five representative Chinese soils. The results showed that the HS-portable- GC-PID method could be effectively operated at ambient temperature, and the addition of 15 ml of saturated NaCl solution in a 40-ml sampling vial and 60 s of shaking time for sample solution were optimum for the HS gas sampling procedure. The recoveries of each BTEX in soils ranged from 87.2 to 105.1 %, with relative standard deviations varying from 5.3 to 7.8 %. Good linearity was obtained for all BTEX compounds, and the detection limits were in the 0.1 to 0.8 μg kg~(-1) range. Soil organic matter was identified as one of the principal elements that affect the HS gas sampling of BTEX in soils. The HS-portable-GC-PID method was successfully applied for field determination of benzene and toluene in soils of a former chemical plant in Jilin City, northeast China. Considering its satisfactory repeatability and reproduc-ibility and particular suitability to be operated in ambient environment, HS sampling coupling with portable GC-PID is, therefore, recommended to be a suitable screening tool for rapid on-site determination of BTEX in soils.
机译：建立了一种基于顶空（HS）采样与便携式气相色谱（GC）和光电离检测器（PID）结合的方法，用于快速测定土壤中的苯，甲苯，乙苯和二甲苯（BTEX）。确定了HS气体采样程序的最佳条件，并使用五种代表性的中国土壤研究了土壤有机质对土壤中BTEX回收率的影响。结果表明，HS-便携式GC-PID方法可以在环境温度下有效运行，并且对于在40 ml样品瓶中添加15 ml饱和NaCl溶液和60 s摇动时间最适合。 HS气体采样程序。土壤中每种BTEX的回收率范围为87.2％至105.1％，相对标准偏差为5.3％至7.8％。所有BTEX化合物均具有良好的线性，检出限在0.1至0.8μgkg〜（-1）范围内。土壤有机质被认为是影响土壤中BTEX的HS气体采样的主要元素之一。 HS-portable-GC-PID方法已成功应用于野外测定，该方法位于中国东北吉林市某原化工厂的土壤中。考虑到其令人满意的重复性和可重复性，以及特别适合在周围环境中使用的情况，因此，建议将HS采样与便携式GC-PID结合使用，作为快速现场测定土壤中BTEX的合适筛选工具。

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  • 来源
    《Environmental Monitoring and Assessment》 |2013年第4期|3037-3048|共12页
  • 作者

    You-Ya Zhou; Ji-Fang Yu; Zeng-Guang Yan; Chao-Yan Zhang; Ya-Bo Xie; Li-Qiang Ma; Qing-Bao Gu; Fa-Sheng Li;

  • 作者单位

    State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, No. 8 DaYangFang, An Wai, Beijing 100012, People's Republic of China;

    State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, No. 8 DaYangFang, An Wai, Beijing 100012, People's Republic of China,Department of Chemistry and Environmental Engineering,China University of Mining and Technology,Beijing 100083, China;

    State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, No. 8 DaYangFang, An Wai, Beijing 100012, People's Republic of China,Department of Soil Pollution Control, Chinese Research Academy of Environmental Sciences,No. 8 DaYangFang AnWai,Beijing 100012, People's Republic of China;

    State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, No. 8 DaYangFang, An Wai, Beijing 100012, People's Republic of China;

    College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022, China;

    Department of Chemistry and Environmental Engineering,China University of Mining and Technology,Beijing 100083, China;

    State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, No. 8 DaYangFang, An Wai, Beijing 100012, People's Republic of China;

    State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, No. 8 DaYangFang, An Wai, Beijing 100012, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    BTEX; headspace; portable gas chromatography; photo ionization detector; soil;

    机译：BTEX;顶空便携式气相色谱仪光电离检测器;泥;

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