郭二辉,陈家林,郑敏,裴丙,杨喜田

• 1:河南农业大学林学院

摘要(Abstract)：

为探究城市不同道路等级对空气PM_(2.5)和PM_(10)质量浓度特征及其日变化规律的影响,本研究选取郑州市的金水路(快速路)、文化路(主干道)和东三街(支道)进行调查和监测。结果表明,PM_(2.5)和PM_(10)的日均值表现为金水路>文化路>东三街,3条道路PM_(2.5)和PM_(10)的质量浓度均不同程度超过国家标准质量浓度限值。文化路PM_(2.5)和PM_(10)的日变化呈现单峰型曲线,峰值出现在7:00-8:00。金水路PM_(2.5)和PM_(10)日变化波动性较小,且整体保持较高质量浓度水平。东三街PM_(2.5)和PM_(10)质量浓度峰值出现在6:00-8:00,在12:00之后随着车流量的变化呈现波动。3条道路PM_(2.5)/PM_(10)值为0.64~0.73,且在13:00-14:00之间出现峰值。PM_(2.5)/PM_(10)的平均比值:文化路(0.69)>东三街(0.68)>金水路(0.66),说明机动车尾气对PM_(2.5)的贡献大于PM_(10)。3条道路的PM_(2.5)、PM_(10)质量浓度与车流量之间存在相关性,但显著性不同。

关键词(KeyWords)： 城市道路等级;PM2.5质量浓度;PM10质量浓度;分布特征

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41401206);; 郑州市科技攻关项目(153PKJGG107);; 河南省基础研究计划项目(152300410234)

作者(Author): 郭二辉,陈家林,郑敏,裴丙,杨喜田

DOI: 10.16445/j.cnki.1000-2340.2016.03.021

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