Measurement of NO2, HNO3, NH3 and SO2 and related particulate matter at a rural site in Rampur, India

Gupta, Anand; Kumar, Ranjit; Kumari, K. Maharaj; Srivastava, S. N.

doi:10.1016/j.atmosenv.2003.07.008

Cited by 110 publications

(83 citation statements)

References 53 publications

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“…Because temperatures and relative humidity are correlated negatively with each other, NO 2 correlated positively with ambient temperatures with a correlation coefficient of R 2 =0.648. These findings correlate to those reported in related studies [46,47]. 2 ) is derived from the combustion of sulfur-containing fossil fuels and is a major air pollutant in many parts of the world [2,29].…”

Section: Analysis Of No 2 Concentrationssupporting

confidence: 88%

“…The recorded data pass through rectify units and an average value is displayed. For each potential pollutant about [40][41][42][43][44][45][46][47][48][49][50] values are recorded during the operation period for one measurement of 2-3 minutes. The hourly mean concentrations of the measured pollutants during the two periods of study are registered and tabulated.…”

Section: Discussionmentioning

confidence: 99%

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Effect of Meteorological Variables on Air Pollutants Variation in Arid Climates

Radaideh¹

2017

J Environ Anal Toxicol

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Section: Analysis Of No 2 Concentrationssupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Effect of Meteorological Variables on Air Pollutants Variation in Arid Climates

Radaideh¹

2017

J Environ Anal Toxicol

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“…6) the trend is that summer, winter and spring months show peak concentrations. A higher SO 2− 4 concentration in summer may be partly due to higher temperature and incidence of solar radiation, increasing photochemical activity and especially OH levels (Gupta et al 2003). Despite July and August being winter months, they have shown atypical high temperatures for the period.…”

Section: So 2 and Nomentioning

confidence: 99%

Study of wet precipitation and its chemical composition in South of Brazil

Teixeira

Migliavacca

Filho

et al. 2008

An. Acad. Bras. Ciênc.

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The purpose of this study is to analyze the chemical composition of wet precipitation in samples collected at three stations in the Candiota region in the Brazilian state of Rio Grande do Sul (RS). Samples were collected in 2004. Variables analyzed in wet precipitation were pH, conductivity, and concentration of Cl − , NO − 3 , SO 2− 4 F − , Na + , Ca 2+ , Mg 2+ , K + , NH + 4 , Cu, Zn, Fe, Mn, Pb, Ni, Cd, Co, and Cr. SO 2 and NO 2 distribution over the time were also evaluated. Results have showed that pH < 5.6 are found mostly at Candiota airport (85%), followed by Aceguá (72%) and Três Lagoas (65%). Enrichment Factor of the studied ions in wet deposition revealed higher Ca 2+ and SO 2− 4 enrichment in Três Lagoas. Factor Analysis applied to metals and major ions allowed identifying the major sources. While Cl − , Na + , Mg 2+ are of marine origin, SO 2− 4 , NO − 3 , NH + 4 , F − come from anthropogenic sources. Except for Fe and Mn originating from the soil dust, the metals studied showed to have anthropogenic influence The average SO 2 and NO 2 concentration, as well as SO 2− 4 and NO − 3 in wet precipitation in the Candiota region showed higher concentrations during the warmer months.

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“…The observed background concentrations in Beirut are low and do not seriously affect human health. Furthermore, since no major SO 2 sources are present in the indoor environment in the developed countries, the indoor SO 2 level is usually much lower than the outdoor level (Gupta et al 2003).…”

Section: Periods and Sampling Sitesmentioning

confidence: 99%

SO2 in Beirut: air quality implication and effects of local emissions and long-range transport

Afif

Chélala

Borbon

et al. 2008

Air Qual Atmos Health

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While sulfur dioxide (SO 2 ) emissions have been dramatically restricted in the past few decades, some cities in developing countries still encounter high pollution levels. This makes it essential to implement an air quality monitoring network in these sensitive regions. Results from a program of measuring groundlevel concentration of SO 2 (from December 2004 till July 2006) at 22 curbside and background sites within the city of Beirut (Lebanon) are presented for the first time. Four-week sampling period measurements were made over 20 periods for all sites by passive sampling. Low SO 2 concentrations were observed (3.1 parts per billion on average for the whole period). This value is among the lowest observed in urban areas worldwide. Thus, Beirut is not polluted by SO 2 on an annual basis. Highest concentrations were measured in winter time, resulting from low height of the boundary layer and higher emissions of SO 2 (e.g., heating). Cluster analysis revealed two different SO 2 variation patterns over the city (high-and low-level patterns), highlighting the effects of local sources location and wind direction variability on SO 2 distribution. Analysis of seasonal variations pointed out a springtime SO 2 maximum in 2005. Beside local sources, long-range transport can account for an important source of SO 2 in Beirut, explaining around 50% of SO 2 levels within the city.

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Measurement of NO2, HNO3, NH3 and SO2 and related particulate matter at a rural site in Rampur, India

Cited by 110 publications

References 53 publications

Effect of Meteorological Variables on Air Pollutants Variation in Arid Climates

Effect of Meteorological Variables on Air Pollutants Variation in Arid Climates

Study of wet precipitation and its chemical composition in South of Brazil

SO2 in Beirut: air quality implication and effects of local emissions and long-range transport

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