• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Laser Radar Conference >MEASUREMENTS OF HYDROCARBONS IN THE UV BY USING A MOBILE MULTIWAVELENGTH-LIDAR
【24h】

MEASUREMENTS OF HYDROCARBONS IN THE UV BY USING A MOBILE MULTIWAVELENGTH-LIDAR

机译：使用移动多波长延长雷达测量UV中烃的烃

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

摘要

Hydrocarbons in the lower atmosphere have a strong impact on the human health. Some of them are harmful to health directly, as benzene, toluene and xylene (BTX). Other species are important precursors of the photochemical formation of tropospheric ozone, e.g. high reactive olefins as ethylene and propylene. The new limit values in the European guidelines, agreed for benzene and ozone, are exceeded (the highest ozone concentrations in Germany 2003 occurred near by petrochemical industries). Concentrations of hydrocarbons at ground level are determined by local emissions, transports as well as mixing and photochemical processes. These processes take place not only at ground level, but mainly in different altitudes of the troposphere. To detect and quantify hydrocarbons remote sensing systems are suitable instruments in principal. In particular, the detection of diffuse emissions (leaks, tanks, pipelines) is an excellent application field for LIDAR systems with the DIAL principle (Differential Absorption Lidar), By measuring of hydrocarbons with a LIDAR system interferences have to be taken into account. Especially in the case of BTX-measurements strong interferences are existing, cause the species are coexistent mostly. In addition, interferences caused by ozone has to be considered. Due to these experiences, a new mobile Multiwavelength-LIDAR was developed. This mobile system allows the monitoring of trace gases, that absorb light between 255 and 290 nm and around 400 nm, by using up to 16 different wavelengths. The Laser source is a YAG-pumped midband OPO with frequency doubling and frequency mixing, the repetition rate is 20 Hz. Measurements of hydrocarbon toluene were carried out at the Technical University of Cartagena, Spain February 2004. This paper depicts the preliminary results gained from these set of experiments.
机译：较低气氛中的碳氢化合物对人类健康产生了强烈影响。其中一些是直接对健康有害的，作为苯，甲苯和二甲苯（BTX）。其他物种是对流层臭氧的光化学形成的重要前体，例如，高反应性烯烃作为乙烯和丙烯。超过苯和臭氧的欧洲准则中的新限制值（德国2003年德国最高臭氧浓度）。地面烃浓度由局部排放，运输以及混合和光化学方法确定。这些过程不仅发生在地面，而且主要发生在对流层的不同海拔。为了检测和量化烃类遥感系统是主要的仪器。特别地，通过拨号原理（差动吸收LIDAR）的LIDAR系统的优异应用领域是具有拨号原理（差动吸收LIDAR）的优异应用领域，通过使用LIDAR系统的干扰进行碳氢化合物。特别是在BTX测量的情况下，存在强烈的干扰，导致物种主要共存。此外，必须考虑由臭氧引起的干扰。由于这些经验，开发了一种新的移动多个波长雷达。该移动系统允许监测痕量气体，其通过使用多达16个不同的波长吸收255和290nm和约400nm之间的光。激光源是带有倍频和频率混合的YAG泵浦的中间电机，重复率为20 Hz。烃类甲苯的测量在2004年2月的Cartagena技术大学进行。本文描述了这些实验中获得的初步结果。

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