Seasonal variation in ambient PM mass and number concentrations (case study: Tehran, Iran)

被引：27

作者：

Halek, Farah ^{[1
]}

Kianpour-Rad, Mansour ^{[1
]}

Kavousirahim, Ali ^{[1
]}

机构：

[1] Mat & Energy Res Ctr, Environm Grp, Tehran, Iran

来源：

ENVIRONMENTAL MONITORING AND ASSESSMENT | 2010年 / 169卷 / 1-4期

关键词：

Particulate matter; Particle number; Seasonal variation; Tehran air pollution; PARTICLE NUMBER; PARTICULATE MATTER; AIR-POLLUTION; EXPOSURE; TREND; PM2.5;

D O I：

10.1007/s10661-009-1192-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Tehran, the capital city of Iran, is an important industrial and commercial center. This city is one of the worst cities in the world in terms of air pollution, which is mostly due to mobile sources rather than stationary sources. Particulate matter (PM), which is a complex mixture of extremely small particles and liquid droplets, is considered as an important source of air pollution in Tehran. In this study, our objective was to study PM10, PM2.5, and PM1.0 mass and number concentrations and find the correlations of these two parameters in the west-central parts of Tehran during two consecutive warm and cold seasons. The particles collected from five stations were analyzed for their mass and number simultaneously by a laser-based Grimm dust monitor. In general, it was found that the accumulation of the PM in this region is more in the cold season. PM10 mass concentration increases almost twofold and PM2.5 and PM1.0 almost three times in this season. The mean number concentration of the particles (0.3-20 mu m) was found to be almost 4.8 times in the cold season. It was also noticed that the average dimensions of the particles decrease in that season.

引用

页码：501 / 507

页数：7

共 22 条

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