Page 245 - 《环境工程技术学报》2022年第5期
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Vol.12,No.5 环 境 工 程 技 术 学 报 第 12 卷,第 5 期
Sep.,2022 Journal of Environmental Engineering Technology 2022 年 9 月
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李永锋,马杰,王胜蓝,等.重庆市典型道路机动车排 放 NO 污染特 征 [J].环境工程技术学报,2022,12(5):1601-1608.
LI Y F,MA J,WANG S L,et al.Research on the pollution characteristics of NO emitted by motor vehicles on typical roads in Chongqing[J].Journal of
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Environmental Engineering Technology,2022,12(5):1601-1608.
重庆市典型道路机动车排 放 NO 污染特征
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李永锋,马杰,王胜蓝,蒋月,杨海蓉,张潇天,王俭 *
重庆市生态环境监测中心
摘要 为研究城市道路机动车排 放 NO 浓度的变化,选取重庆市大渡口 区 4 条道路进 行 1 周的自动在线监测,结合道路
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RFI 基站的车流量及车型信息,分 析 NO 浓度与车流变化特征及其相关性。结果表明: 条道 路 NO 日均浓度 为 29~57
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D
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µg/m ,均低 于 GB 3095—2012《环境空气质量标准》二级标准限值;NO 小时浓度变化趋势 为 20:0 左右峰值浓度明显高于
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2
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08:0 峰值浓度,最小值出现 在 14:0 左右。 条道路车流量呈明显的早晚高峰趋势,周末的车流量比工作日平均车流量下降
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0
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20%~40%,出现比例较高的车型为小型客车、出租车、公交车、轻型货车。NO 小时浓度变化与车流量变化规律基本一致,均
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呈现较为明显的早晚高峰趋势,但晚高峰时 段 NO 峰值浓度的出现稍微滞后于车流量峰值的出现。
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关键词 道路交通;二氧化氮(NO );污染特征;车流量
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中图分类号:X51 文章编号:1674-991X(2022)05-1601-08 doi:10.12153/j.issn.1674-991X.20210379
Research on the pollution characteristics of NO emitted by motor vehicles on
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typical roads in Chongqing
LI Yongfeng, MA Jie, WANG Shenglan, JIANG Yue, YANG Hairong, ZHANG Xiaotian, WANG Jian *
Chongqing Ecology and Environment Monitoring Center
Abstract To study the change of the concentrations of NO emitted by motor vehicles on the urban road, 4 roads
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in Dadukou District, Chongqing Municipality were selected for one-week automatic online monitoring. Combined
with the information of traffic flow and vehicles collected by RFID Base Stations on the road, the change features of
NO concentration and traffic flow, as well as their correlation were analyzed. The results showed that the daily
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averaged concentration of NO on 4 roads was 29-57 µg/m , all lower than Level 2 standard threshold of Ambient
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Air Quality Standard (GB 3095-2012). The hourly concentration of NO peak value at about 20:00 was significantly
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higher than that at 08:00, with the minimum value appearing at around 14:00. The traffic flow of 4 roads had the
obvious trend of morning and evening rush hours. The traffic flow at weekends was 20%-40% lower than the
average traffic flow on workdays. The vehicle models with a high proportion included minibus, taxi, bus, and light
truck. The change of the hourly concentration of NO was consistent with that of traffic flow. Both of them had the
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obvious trend of morning and evening rush hours, but during the evening rush hours, the peak concentration of NO
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appeared slightly later than the peak value of traffic flow.
Key words road traffic; nitrogen dioxide(NO ); pollution characteristics; traffic flow
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二氧化 氮 (NO ) 作为主要的氮氧化物(NO ),是 NO 污染的主要来源 [5-6] ,根据《中国移动源环境管理
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我 国 GB 3095—2012《环境空气质量标准》中规定的 年 报 2020》,2019年全国机动车保有量 达 3.4 亿辆,
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基本控制项目,是生成臭氧(O )和细颗粒物(PM ) 北京、成都、重庆 等 1 个城市达 到 30 万辆以上,
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的主要前体物之一 [1-2] 。NO 参与的各种化学反应直 越来越多的研究关注交通道路 中 NO 浓度的变化特
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接或间接影响着环境空气质量 ,是继 PM 5 和 征及对空气质量的影响。
[3]
2.
]
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O 之后出现次数最多的首要污染物 。我国多地的 徐倩 根据城市交通特征等信息,建立了中国
[4]
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[8
]
排放源清单研究表明,机动车尾气排放已成为城市 机动车排放清单;解淑霞等 基于实际车流量等数
收稿日期:2021-08-03
基金项目:重庆市生态环境局科技项目(201 年打赢蓝天保卫战课题)
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作者简介:李永 锋 (1980—),男,工程师,主要研究方向为环境监测和数据评价,1160334996@qq.com
* 责任作者:王俭(1984—),男,正高级工程师,主要研究方向为环境监测和污染防治,wangjianmm999@163.com

