• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International symposium on halogenated persistent organic pollutants >DIOXIN AND FURAN EMISSION EVALUATION IN AUTOMOTIVE DIESEL ENGINES
【24h】

DIOXIN AND FURAN EMISSION EVALUATION IN AUTOMOTIVE DIESEL ENGINES

机译：车用柴油机中二恶英和呋喃的排放评价。

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

摘要

Dioxins and furans were measured in particulate matter and gases from the exhaust of new heavy-duty diesel engines that comply with the EURO 3 emission limits and are representative of those used to equip new buses and trucks in Brazil at the time of the experiment. The tests were performed in a bench dynamometer using the ESC test. The analyses were performed by HRGC/HRMS in accordance with the USEPA Method 8290. The results indicated emissions generally below or near the detection limit. In one sample it was verified that octachlorodibenzo-p-dioxin (OCDD) was above but near the limit of detection, while in another sample, the same was found for octachlorodibenzofuran (OCDF) and pentachlorodibenzofuran (1,2,3,7,8-PeCDF). The results showed that emission of PCDD/Fs from diesel engines may not be so significant, for the level of technology of the engines tested and composition of the fuel used. The average emission factor obtained in this study (1.95 μg TEQ.t-1 of fuel) is higher than the emission factor recommended by UNEP in the Standardized Toolkit for Identification and Quantification of Dioxin and Furan Releases 2005 (0.1 μg TEQ.t-1 of fuel).
机译：在新重型柴油发动机废气中测量的二恶英和呋喃中的颗粒物和气体均符合欧3排放限制，并且是实验时在巴西用于装备新公共汽车和卡车的污染物的代表。该测试在台式测功机上使用ESC测试进行。分析是通过HRGC / HRMS根据USEPA方法8290进行的。结果表明排放量通常低于或接近检测极限。在一个样品中，证实八氯二苯并-对-二恶英（OCDD）高于但接近检测极限，而在另一个样品中，八氯二苯并呋喃（OCDF）和五氯二苯并呋喃（1,2,3,7,8 -PeCDF）。结果表明，对于所测试的发动机技术水平和所用燃料的成分，柴油发动机的PCDD / Fs排放可能并不那么重要。在这项研究中获得的平均排放因子（1.95μg燃料的TEQ.t-1）高于环境署在《 2005年二恶英和呋喃释放物的鉴定和定量标准化工具包》中建议的排放因子（0.1μgTEQ.t-1）。燃料）。

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