Inter-annual Variation of Ambient Ammonia and Related Trace Gases in Delhi, India

被引：10

作者：

Sharma, S. K. ^{[1
,2
]}

Saraswati ^{[1
,2
]}

Mandal, T. K. ^{[1
,2
]}

Saxena, Mohit ^{[1
]}

机构：

[1] Natl Phys Lab, CSIR, Environm Sci & Biomed Metrol Div, Dr KS Krishnan Rd, New Delhi 110012, India

[2] CSIR, Acad Sci & Innovat Res AcSIR, Natl Phys Lab Campus, New Delhi 110012, India

来源：

BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY | 2017年 / 99卷 / 02期

关键词：

Trace gases; Ammonia; Meteorological parameters; Annual variation; SEASONAL VARIABILITY; ATMOSPHERIC AMMONIA; URBAN AREA; EMISSIONS; NH3; NO; BENGAL; PM2.5; PM10; SITE;

D O I：

10.1007/s00128-017-2058-x

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this study, ambient NH3, NO, NO2, CO and SO2 were measured continuously from February, 2008, to December, 2016. The annual average mixing ratios (mole/mole) of NH3, NO, NO2, CO and SO2 were 17.8 +/- 3.4 ppb; 21.2 +/- 2.3 ppb, 18.1 +/- 3.2 ppb; 1.7 +/- 0.3 ppm and 2.0 +/- 0.3 ppb, respectively. All the trace gases (NH3, NO, NO2, CO and SO2) showed significant annual variation during the study. A significant increasing trend in mixing ratios of ambient NH3 and NO2 were observed at the observational site of Delhi, whereas, increasing trend were recorded in case of NO, CO and NO2 mixing ratios. The results emphasized that traffic could be one of the significant sources of ambient NH3 at the urban site of Delhi, as illustrated by positive correlations of NH3 with traffic related co-pollutants (NO and CO).

引用

页码：281 / 285

页数：5

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