• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>the Air Waste Management Association's Annual Conference Exhibition >Characteristics of Volatile Organic Compounds in the Atmosphere at the Surrounding Area of an Oil-Contaminated Remediation Site
【24h】

Characteristics of Volatile Organic Compounds in the Atmosphere at the Surrounding Area of an Oil-Contaminated Remediation Site

机译：油污修复部位周边地区大气中挥发性有机化合物的特征

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study aims to investigate the characteristics of atmospheric volatile organic compounds (VOCs) emitted from an oil-contaminated remediation site. A sampling network including five sampling sites located at the surrounding area of the oil-contaminated remediation site and nearby community was established for sampling VOCs near ground level. In this study, VOCs were collected by carbontrap 300 packed multi-bed sampling tubes from February 2002 to April 2003. The tubes were then desorbed by a thermal desorption unit (TDU) and then analyzed by a gas chromatography with a flame ionization detector (GC/FID). In addition, methane and non-methane hydrocarbons (NMHC) were automatically monitored in-situ and correlated with the concentration of VOCs. Results from field measurements showed that the concentration of NMHC at the upwind of oil-contaminated remediation site was generally lower than the downwind site at nearby community. Major VOCs observed in the atmosphere were n-octane, toluene, and m,p-xylene. The mass ratios of toluene to benzene (T/B) were similar to the tail pipe exhaust gas's T/B of 2.0-2.3. Similar trend was observed for the mass ratio of benzene, toluene, ethylbenzene, and m,p-xylene (BTEX). The results suggested that the atmospheric VOCs at the surrounding area of the oil-contaminated remediation site was mainly emitted from automobiles on the highway rather than from soil gas emitted from oil-contaminated remediation site. Health risk assessment indicated that the cancer risk criteria ranged from 1.1x10~(-9) to 7.8x10~(-8), while the non-cancer hazard indexes ranged from 8.4x10~(-5) to 3.7x10~(-3). Both cancer and non-cancer hazard risks did not violate the regulation of 1.0x10~(-6) and unity, respectively.
机译：本研究旨在探讨从污染的修复部位发出的大气挥发性有机化合物（VOC）的特征。一个采样网络，包括位于油污污染的修复站点周围地区和附近社区的五个采样网站，为在地面上的采样VOC。在这项研究中，从2002年2月到2003年4月，通过Carbontrap 300包装的多床采样管收集VOC。然后通过热解吸单元（TDU）解吸管，然后通过气相色谱法分析火焰电离检测器（GC / FID）。此外，甲烷和非甲烷烃（NMHC）原位监测并与VOC的浓度相关。现场测量结果表明，油污修复部位逆风的NMHC浓度通常低于附近社区的下行部位。在大气中观察到的主要VOC是N-辛烷，甲苯和M，对二甲苯。甲苯与苯（T / B）的质量比类似于2.0-2.3的尾管废气的T / B。苯，甲苯，乙苯和M，对二甲苯（BTEX）的质量比观察到类似的趋势。结果表明，油污修复部位周围地区的大气VOC主要主要从高速公路上的汽车发出，而不是从污染的修复部位发出的土壤气体。健康风险评估表明，癌症风险标准从1.1x10〜（-9）到7.8x10〜（-8），而非癌症危险指标从8.4x10〜（-5）到3.7x10〜（-3 ）。癌症和非癌症危害风险都没有分别违反1.0×10〜（-6）和统一的调节。

著录项

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