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Seasonal Characteristics and Particle-size Distributions of Particulate Air Pollutants in Urumqi
Urban particulate air pollution is a known cause of adverse human health effects worldwide. Urumqi is a large oasis city in which rapid urbanization has caused a series of eco-environmental problems including serious air pollution, water shortage, dense population, excess energy consumption, and the...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6388106/ https://www.ncbi.nlm.nih.gov/pubmed/30708935 http://dx.doi.org/10.3390/ijerph16030396 |
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author | Meng, Xianyong Wu, Yiping Pan, Zhihua Wang, Hao Yin, Gang Zhao, Honggang |
author_facet | Meng, Xianyong Wu, Yiping Pan, Zhihua Wang, Hao Yin, Gang Zhao, Honggang |
author_sort | Meng, Xianyong |
collection | PubMed |
description | Urban particulate air pollution is a known cause of adverse human health effects worldwide. Urumqi is a large oasis city in which rapid urbanization has caused a series of eco-environmental problems including serious air pollution, water shortage, dense population, excess energy consumption, and the creation of an urban heat island, among others. Coal is the most important source of energy and air pollutants that are poorly dispersed into the natural surroundings are the main reasons for serious pollution in the Urumqi urban area. Using differential optical absorption spectroscopy (DOAS), aerosol levels were determined using the double optical path method. We found that aerosol concentrations in Urumqi increased rapidly in winter, and that the concentration of fine particles was much higher than that of coarse particles. The background aerosol concentration was highest in winter in the research area, and the air-flow speed had a significant impact on this because high speed surface winds that correspond to high air flows can transport the aerosol to other places. Some of the observed day-to-night differences may be caused by differing wind directions that transport air masses from different emission sources during the day and the night. Daily and seasonal differences in PM(1.0) concentrations of different grades of polluted air were statistically analyzed using average daily concentration data for particles smaller than 10, 2.5 and 1.0 microns (PM(10), PM(2.5) and PM(1.0)), and meteorological observations for Urumqi, Tianshan District in 2010. |
format | Online Article Text |
id | pubmed-6388106 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-63881062019-02-27 Seasonal Characteristics and Particle-size Distributions of Particulate Air Pollutants in Urumqi Meng, Xianyong Wu, Yiping Pan, Zhihua Wang, Hao Yin, Gang Zhao, Honggang Int J Environ Res Public Health Article Urban particulate air pollution is a known cause of adverse human health effects worldwide. Urumqi is a large oasis city in which rapid urbanization has caused a series of eco-environmental problems including serious air pollution, water shortage, dense population, excess energy consumption, and the creation of an urban heat island, among others. Coal is the most important source of energy and air pollutants that are poorly dispersed into the natural surroundings are the main reasons for serious pollution in the Urumqi urban area. Using differential optical absorption spectroscopy (DOAS), aerosol levels were determined using the double optical path method. We found that aerosol concentrations in Urumqi increased rapidly in winter, and that the concentration of fine particles was much higher than that of coarse particles. The background aerosol concentration was highest in winter in the research area, and the air-flow speed had a significant impact on this because high speed surface winds that correspond to high air flows can transport the aerosol to other places. Some of the observed day-to-night differences may be caused by differing wind directions that transport air masses from different emission sources during the day and the night. Daily and seasonal differences in PM(1.0) concentrations of different grades of polluted air were statistically analyzed using average daily concentration data for particles smaller than 10, 2.5 and 1.0 microns (PM(10), PM(2.5) and PM(1.0)), and meteorological observations for Urumqi, Tianshan District in 2010. MDPI 2019-01-31 2019-02 /pmc/articles/PMC6388106/ /pubmed/30708935 http://dx.doi.org/10.3390/ijerph16030396 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Meng, Xianyong Wu, Yiping Pan, Zhihua Wang, Hao Yin, Gang Zhao, Honggang Seasonal Characteristics and Particle-size Distributions of Particulate Air Pollutants in Urumqi |
title | Seasonal Characteristics and Particle-size Distributions of Particulate Air Pollutants in Urumqi |
title_full | Seasonal Characteristics and Particle-size Distributions of Particulate Air Pollutants in Urumqi |
title_fullStr | Seasonal Characteristics and Particle-size Distributions of Particulate Air Pollutants in Urumqi |
title_full_unstemmed | Seasonal Characteristics and Particle-size Distributions of Particulate Air Pollutants in Urumqi |
title_short | Seasonal Characteristics and Particle-size Distributions of Particulate Air Pollutants in Urumqi |
title_sort | seasonal characteristics and particle-size distributions of particulate air pollutants in urumqi |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6388106/ https://www.ncbi.nlm.nih.gov/pubmed/30708935 http://dx.doi.org/10.3390/ijerph16030396 |
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