Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-12581-2018 |
Assessment of gaseous criteria pollutants in the Bangkok Metropolitan Region, Thailand | |
Uttamang, Pornpan1; Aneja, Viney P.1; Hanna, Adel F.1,2 | |
2018-08-30 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:16页码:12581-12593 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The analysis of gaseous criteria pollutants in the Bangkok Metropolitan Region (BMR), Thailand, from 2010 to 2014 reveals that while the hourly concentrations of CO, SO2 and NO2 were mostly within the National Ambient Air Quality Standards (NAAQs) of Thailand, the hourly concentrations of O-3 frequently exceeded the standard. The results reveal that the problem of high O-3 concentration continuously persisted in this area. The O-3 photolytic rate constant (j(1)) for BMR calculated based on assuming a photo-stationary state ranged from 0.008 to 0.013 s(-1), which is similar to the calculated j(1) using the NCAR TUV model (0.021 +/- 0.0024 s(-1)). Interconversion between O-3, NO and NO2 indicates that crossover points between the species occur when the concentration of NOx (= NO + NO2) is similar to 60 ppb. Under a low-NOx regime ([NOx] < 60 ppb), O-3 is the dominant species, while, under a high-NOx regime ([NOx] > 60 ppb), NO dominates. Linear regression analysis between the concentrations of O-x (= O-3 + NO2) and NOx provides the role of local and regional contributions to O-x. During O-3 episodes ([O-3](hourly) > 100 ppb), the values of the local and regional contributions were nearly double of those during non-episodes. Ratio analysis suggests that the major contributors of primary pollutants over BMR are mobile sources. The air quality index (AQI) for BMR was predominantly good to moderate; however, unhealthy O-3 categories were observed during episode conditions in the region. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000443195200002 |
WOS关键词 | TROPOSPHERIC OZONE ; NO2 CONCENTRATIONS ; CARBON-MONOXIDE ; SOUTHEAST-ASIA ; AIR-POLLUTION ; URBAN SITE ; O-3 ; VARIABILITY ; INDIA ; AREA |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/30756 |
专题 | 地球科学 |
作者单位 | 1.North Carolina State Univ, Dept Marine Earth & Atmospher Sci, Raleigh, NC 27695 USA; 2.Univ North Carolina Chapel Hill, Inst Environm, Chapel Hill, NC 27517 USA |
推荐引用方式 GB/T 7714 | Uttamang, Pornpan,Aneja, Viney P.,Hanna, Adel F.. Assessment of gaseous criteria pollutants in the Bangkok Metropolitan Region, Thailand[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(16):12581-12593. |
APA | Uttamang, Pornpan,Aneja, Viney P.,&Hanna, Adel F..(2018).Assessment of gaseous criteria pollutants in the Bangkok Metropolitan Region, Thailand.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(16),12581-12593. |
MLA | Uttamang, Pornpan,et al."Assessment of gaseous criteria pollutants in the Bangkok Metropolitan Region, Thailand".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.16(2018):12581-12593. |
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