• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Arabian Journal for Science and Engineering >Determination of Volatile Organic Compounds (VOCs) in Potable Water Using Solid Phase Micro Extraction-Gas Chromatography (SPME-GC)
【24h】

Determination of Volatile Organic Compounds (VOCs) in Potable Water Using Solid Phase Micro Extraction-Gas Chromatography (SPME-GC)

机译：固相微萃取-气相色谱法（SPME-GC）测定饮用水中的挥发性有机化合物（VOC）

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study is aimed at detection and estimation of five Volatile Organic Compounds (carbon tet-rachloride, tetrachloroethylene, 1,2-dichloroethane, 1,1,1-trichloroethane and 1,2,3-trichlorobenzene) by gas chromatography (GC). These compounds pose a risk to human health as well as environment. As the conventional sample extraction methods are laborious and tiresome involving frequent handling with solvents; solid phase micro extraction (SPME) technique was employed which is robust and cost-effective method of sample extraction with minimal exposure and handling of solvents. Sample extraction time was optimized as a first step by executing replicate analysis over 1,5, 10 and 15 min while keeping certain other parameters constant; electron capture detector (ECD) was employed for the detection of analytes. As a second step, reproducibility of SPME fiber was verified by running replica; relative standard deviation was ranging from 3.5 to 19.3 %. Drinking water samples collected from selected gas and petrol stations were then analyzed as an application of the SPME-GC-ECD method. A total of 5 out of 27 sites were found to be contaminated with the compounds of concern mentioned above; two of them (1,2-dichloroethane, 1,1,1-trichlorobenzene) showed contamination above US-EPA's prescribed limits.
机译：这项研究旨在通过气相色谱法（GC）检测和评估五种挥发性有机化合物（四氯化碳四氯化碳，四氯乙烯，1,2-二氯乙烷，1,1,1-三氯乙烷和1,2,3-三氯苯）。这些化合物对人类健康和环境构成风险。由于传统的样品提取方法既费力又费力，需要经常使用溶剂进行处理。固相微萃取（SPME）技术是一种可靠且经济高效的样品萃取方法，具有最小的接触和溶剂处理能力。第一步，通过在1.5、10和15分钟内执行重复分析，同时保持某些其他参数不变，来优化样品提取时间。电子捕获检测器（ECD）用于检测分析物。第二步，通过运行复制品来验证SPME纤维的可复制性。相对标准偏差为3.5至19.3％。然后使用SPME-GC-ECD方法分析从选定的加油站和加油站收集的饮用水样品。 27个地点中有5个被发现受到上述化合物的污染；其中两个（1,2-二氯乙烷，1,1,1-三氯苯）显示出超出US-EPA规定限值的污染。

著录项

  • 来源
    《Arabian Journal for Science and Engineering》 |2012年第5期|p.1255-1262|共8页
  • 作者

    Sajeela Ghaffar; Imran Hashmi; M. Ali Awan; Habib Nasir; Hira Amjad;

  • 作者单位

    Institute of Environmental Science and Engineering (IESE), School of Civil and Environmental Engineering (SCEE),National University of Sciences and Technology (NUST), Sector H-12 Campus, 44000 Islamabad, Pakistan;

    Institute of Environmental Science and Engineering (IESE), School of Civil and Environmental Engineering (SCEE),National University of Sciences and Technology (NUST), Sector H-12 Campus, 44000 Islamabad, Pakistan;

    Institute of Environmental Science and Engineering (IESE), School of Civil and Environmental Engineering (SCEE),National University of Sciences and Technology (NUST), Sector H-12 Campus, 44000 Islamabad, Pakistan;

    School of Chemical and Materials Engineering (SCME),National University of Sciences and Technology (NUST), Sector H-12 Campus,44000 Islamabad, Pakistan;

    Institute of Environmental Science and Engineering (IESE), School of Civil and Environmental Engineering (SCEE),National University of Sciences and Technology (NUST), Sector H-12 Campus, 44000 Islamabad, Pakistan;

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

    VOCS; SPME; extraction time; reproducibility; SPME-GC-ECD;

    机译：VOCS;SPME;提取时间;重现性SPME-GC-ECD;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号