Ground-level ozone in the Pearl River Delta and the roles of VOC and NOx in its production

被引：251

作者：

Shao, Min ^{[1
]}

Zhang, Yuanhang ^{[1
]}

Zeng, Limin ^{[1
]}

Tang, Xiaoyan ^{[1
]}

Zhang, Jing ^{[2
]}

Zhong, Liuju

Wang, Boguang ^{[3
]}

机构：

[1] Peking Univ, Coll Environm Sci & Engn, State Joint Key Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China

[2] Beijing Normal Univ, Inst Environm Sci, Beijing 100875, Peoples R China

[3] Jinan Univ, Inst Environm Engn, Jinan 510632, Guangdong, Peoples R China

来源：

JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2009年 / 90卷 / 01期

关键词：

Photochemical smog; VOCs; Nitrogen oxide; Ozone; Guangzhou; OBSERVATION-BASED MODEL; POLLUTION;

D O I：

10.1016/j.jenvman.2007.12.008

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In many regions of China. very rapid economic growth has been accompanied by air pollution caused by vehicle emissions. In one of these regions, the Pearl River Delta, the variations of ground-level ozone and its precursors were investigated. Overall, the ambient concentrations of NO2 increased quickly between 1995 and 1996. but then slightly decreased due to stringent nitrogen oxide (NOx) emission controls. Nonetheless, ambient NO2 levels in the Pearl River Delta remained high. The regional average concentrations of volatile organic compounds (VOCs) were 290 ppbC in summer and 190 ppbC in autumn. Local emissions and long-distance transportation of pollutants play important roles in the regional distribution of VOCs. Ambient O-3 production is significant in urban areas and also downwind of cities. The relative incremental reactivities (RIRs), determined by an observation-based model, showed that ground-level ozone formation in the Guangzhou urban area is generally limited by the concentrations of VOCs, but there are also measurable impacts of NOx. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：512 / 518

页数：7

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