奥运期间北京城区的开放式氨气激光在线监测

大气与环境光学学报 ›› 2009, Vol. 4 ›› Issue (5): 356-361.

奥运期间北京城区的开放式氨气激光在线监测

何莹张玉钧刘建国阚瑞峰

（中国科学院环境光学与技术重点实验室安徽光学精密机械研究所，安徽合肥，230031）

出版日期:2009-09-28 发布日期:2009-09-28
通讯作者: 何莹（1983-），女，安徽合肥人，硕士，主要从事可调谐半导体激光吸收光谱法痕量气体检测的应用研究。 E-mail:heying@aiofm.ac.cn
作者简介:何莹（1983-），女，安徽合肥人，硕士，主要从事可调谐半导体激光吸收光谱法痕量气体检测的应用研究。
基金资助:
中科院知识创新重要方向性项目（批准号：KJCX2-SW-W27）

Atmospheric Ammonia On-Line Monitoring in Urban Area of Beijing During Olympics by Open-Path Laser Techniques

HE Ying, ZHANG Yu-Jun, LIU Jian-Guo, KAN Rui-Feng

(Key Laboratory of Environmental Optics& Technology．Anhui Institute of Op tics and Fine Mechanics，the Chinese Academy of Sciences，Hefei 230031，China)

Published:2009-09-28 Online:2009-09-28

摘要/Abstract

摘要：

氨气是大气成分中最丰富的碱性痕量气体，对中和大气酸性成分以及气溶胶的形成起重要作用。使用基于可调谐半导体激光吸收光谱和开放长光程技术的氨气在线监测系统对北京奥运期间鸟巢附近城区进行了氨气浓度的连续监测。监测结果表明氨气浓度具有明显的日变化周期，基本规律是白天浓度降低，夜晚浓度升高到峰值；氨气的日峰值浓度从北京奥运开始有所下降。研究表明北京城区机动车限行对减小氨气浓度和抑制气溶胶的形成起到了积极作用。

关键词: 激光吸收光谱, 氨气, 机动车限行

Abstract:

Gaseous ammonia is the most abundant alkaline trace gas in the atmosphere which plays an important role in acid deposition and aerosol formation. The NH3 on-line monitoring system based on tunable diode laser absorption spectroscopy and long open path technology has been used to continuously measure atmospheric NH3 concentration at an urban site near Beijing National Stadium during Beijing Olympics. The monitoring results show that the atmospheric NH3 concentration variation has an obvious diurnal periodicity, the rule is the concentration decreased in the daytime, and increased to the maximum at night．Moreover, the NH3 peak concentration decreased at the beginning of the Beijing Olympics. The studies have verified the positive effects of auto restriction for reducing ammonia concentration and restricting aerosol formation.

Key words: laser absorption spectroscopy, ammonia, auto restriction

中图分类号:

O433.1

何莹张玉钧刘建国阚瑞峰. 奥运期间北京城区的开放式氨气激光在线监测[J]. 大气与环境光学学报, 2009, 4(5): 356-361.

HE Ying, ZHANG Yu-Jun, LIU Jian-Guo, KAN Rui-Feng. Atmospheric Ammonia On-Line Monitoring in Urban Area of Beijing During Olympics by Open-Path Laser Techniques[J]. Journal of Atmospheric and Environmental Optics, 2009, 4(5): 356-361.

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