Temporal Variations and Potential Source Areas of Fine Particulate Matter in Bangkok, Thailand

IF 3.5 Q2 ENVIRONMENTAL SCIENCES Air Soil and Water Research Pub Date : 2020-12-01 DOI:10.1177/1178622120978203

S. Kanchanasuta, S. Sooktawee, A. Patpai, P. Vatanasomboon

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引用次数: 14

Abstract

Particulate matter (PM) less than 2.5 micron (PM2.5) issue is 1 of the important targets of concern by the United Nations’ Sustainable Development Goals. Bangkok is a megacity and facing air pollution problems. This study analyzed PM, PM2.5 and PM less than 10 micron (PM10), monitoring data from stations located in Bangkok, and aimed to present their variations in diurnal, weekly, and intra-annual timescales. High PM concentrations are related to calm wind. The diurnal variation of PM2.5/PM10 suggested a greater accumulation of PM2.5 than PMcoarse during the low wind speed. Potential source areas affecting PM rising at each monitoring station were identified using statistical technique, bivariate polar plot, and conditional bivariate probability function. Results showed that Ratchathewi District Monitoring Station identified 3 potential source areas related to emissions from transportation sources creating rising PM concentrations. The first potential source was located in the northwest direction, namely, the Rama VI Road close to the conjunction with Ratchawithi Road. The second potential source area was located around the cross-section between Phaya Thai Road and Rama I Road, while the third was located at the intersection of the Phaya Thai Road to Yothi Street and Rang Nam Road. These potential source areas constitute useful information for managing and reducing PM.

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泰国曼谷细颗粒物的时间变化和潜在来源区

颗粒物（PM）小于2.5 微米（PM2.5）问题是联合国可持续发展目标关注的重要目标之一。曼谷是一个特大城市，面临着空气污染问题。本研究分析了PM、PM2.5和小于10的PM 微米（PM10），曼谷监测站的监测数据，旨在呈现其在日、周和年内时间尺度上的变化。高PM浓度与无风有关。PM2.5/PM10的日变化表明，在低风速期间，PM2.5的积累量大于PMcoarse。利用统计技术、二元极坐标图和条件二元概率函数确定了影响每个监测站PM上升的潜在源区。结果显示，Ratchathewi地区监测站确定了3个与造成PM浓度上升的交通源排放有关的潜在源区。第一个潜在来源位于西北方向，即靠近Ratchawithi路交界处的Rama VI路。第二个潜在震源区位于Phaya Thai路和Rama I路之间的横截面附近，而第三个位于Phaya泰国路至Yothi街和Rang Nam路的交叉口。这些潜在的来源区域构成了管理和减少PM的有用信息。

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来源期刊

Air Soil and Water Research ENVIRONMENTAL SCIENCES-

CiteScore

7.80

自引率

5.30%

发文量

审稿时长

8 weeks

期刊介绍： Air, Soil & Water Research is an open access, peer reviewed international journal covering all areas of research into soil, air and water. The journal looks at each aspect individually, as well as how they interact, with each other and different components of the environment. This includes properties (including physical, chemical, biochemical and biological), analysis, microbiology, chemicals and pollution, consequences for plants and crops, soil hydrology, changes and consequences of change, social issues, and more. The journal welcomes readerships from all fields, but hopes to be particularly profitable to analytical and water chemists and geologists as well as chemical, environmental, petrochemical, water treatment, geophysics and geological engineers. The journal has a multi-disciplinary approach and includes research, results, theory, models, analysis, applications and reviews. Work in lab or field is applicable. Of particular interest are manuscripts relating to environmental concerns. Other possible topics include, but are not limited to: Properties and analysis covering all areas of research into soil, air and water individually as well as how they interact with each other and different components of the environment Soil hydrology and microbiology Changes and consequences of environmental change, chemicals and pollution.