Evaluation of the Sodium Arsenite Method for Measurement of NO<sub>2</sub>in Ambient Air

Margeson, John H.; Beard, Michael; Suggs, Jack C.

doi:10.1080/00022470.1977.10470455

Cited by 17 publications

(5 citation statements)

References 4 publications

(6 reference statements)

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“…A total of 45 samples from the industrial sites, 72 from the commercial/traffic intersection sites and 86 from the residential sites were collected during all the three seasons. These samples were analyzed using standard method as reported elsewhere [ 22 - 26 ]. The secondary data was also collected and pooled on similar pattern through correction factor from the secondary sources for other cities where RSPM and SPM was measured.…”

Section: Methodsmentioning

confidence: 99%

A retrospective approach to assess human health risks associated with growing air pollution in urbanized area of Thar Desert, western Rajasthan, India

Rumana

Sharma

Beniwal

et al. 2014

J Environ Health Sci Engineer

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Air pollution has been a matter of great concern globally because of the associated health risks to individuals. The situation is getting worse in developing countries with more urbanization, industrialization and more importantly the rapidly growing population posing a threat to human life in the form of pulmonary, cardiovascular, carcinogenic or asthmatic diseases by accumulating toxic pollutants, harmful gases, metals, hydrocarbons etc.ObjectiveThe present study was undertaken to assess the magnitude of ambient air pollutants and their human health risks like respiratory ailments, infectious diseases, cardiovascular diseases and cancer using a Retrospective Approach of Bart Ostra.MethodologyThe parameters PM2.5, PM10, NOx, SO2, NH3 and O3 were monitored at all selected study sites monitored through a high volume sampler (APM 451 Envirotech, Envirotech Instruments Pvt. Ltd., New Delhi, India). Retrospective Approach was used for assessment of risk factors and disease burden of respiratory and cardiopulmonary health problems.ResultsEnvironmental burden of disease showed that the problem of health related to air pollution is a main concern particularly in the growing cities of India. High to critical level of air pollution including PM10, PM2.5, NOx, SO2, NH3 and O3 was observed in all seasons at traffic intersections and commercial sites. The respiratory infections (25% incidence in population exposed to indoor smoke problems) and a prevalence of asthma/COPD (4.4%) in households exposed to high vehicular pollution along with signs of coronary artery/heart disease and/or hypertension and cancers (37.9-52.2%), were reported requiring preventive measures.ConclusionThe study reflects a great concern for the mankind with the need of having streamline ways to limit air pollution and emphasize upon efficiently determining the risk of illness upon exposure to air pollution.

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Section: Methodsmentioning

confidence: 99%

A retrospective approach to assess human health risks associated with growing air pollution in urbanized area of Thar Desert, western Rajasthan, India

Rumana

Sharma

Beniwal

et al. 2014

J Environ Health Sci Engineer

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“…Evaluation of model NO 2 with station data from the SAFAR network shows reasonable agreement (Figure S5a in Supporting Information S1). Measurement of NO 2 was carried out (CPCB, 2013, 2018) using either a continuous gas phase chemiluminescence method accurate to within 5% relative standard deviation (Maeda et al, 1980) or the manual sodium arsenite method (Margeson et al, 1977), with a reported 82% collection efficiency. Further, while COALESCE measurements were designed to avoid nitrate losses through the use of nylon filters, nitrate volatilization cannot be completely ruled out in the observations, a possible contributing factor to lower observational values.…”

Section: Evaluation Of Surface Pm 25mentioning

confidence: 99%

Drivers of PM_2.5 Episodes and Exceedance in India: A Synthesis From the COALESCE Network

Venkataraman,

Anand,

Maji

et al. 2024

JGR Atmospheres

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Emission sources influencing high particulate air pollution levels and related mortality in India have been studied earlier on country‐wide and sub‐national scales. Here, we use novel data sets of emissions (for 2019) and observations created under the Carbonaceous Aerosol Emissions, Source Apportionment, and Climate Impacts network in India (Venkataraman et al., 2020, https://doi.org/10.1175/bams‐d‐19‐0030.1) in WRF‐Chem simulations to evaluate drivers of high PM2.5 levels during episodes and in airsheds with different pollution levels. We identify airsheds in “extreme” (110–140 μg/m3), “severe” (80–110 μg/m3) and “significant” (40–80 μg/m3) exceedance of the Indian annual ambient air quality standard (National Ambient Air Quality Standards [NAAQS]) of 40 μg/m3 for PM2.5. We find that primary organic matter and anthropogenic mineral matter (largely coal fly‐ash) drive high PM2.5 levels, both annually and during high PM2.5 episodes. PM2.5 episodes are driven by organic aerosol in north India (Mohali) in wintertime but are additionally influenced by mineral matter and secondary inorganics in central (Bhopal), south India (Mysuru) and eastern India (Shyamnagar). Across airsheds in exceedance of the NAAQS and during high PM2.5 episodes, primary PM2.5 emissions arise largely from the residential sector (50%–75%). Formal sector emissions (industry, thermal power and transport; 40%–55%) drive airshed and episode scale PM2.5 exceedance in northern and eastern India. Agricultural residue burning emissions predominate (50%–75%) on episode scales, both in northern and central India, but not on annual scales. Interestingly, residential sector emissions strongly influence (60%–90%) airsheds in compliance with the NAAQS (annual mean PM2.5 < 40 μg/m3), implying the need for modern residential energy transitions for the reduction of ambient air pollution across India.

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“…This is intended to increase the rate of conversion of NO 2 to nitrite and gives a constant high collection efficient of 82%. 33 Nitric oxide and carbon dioxide are positive and negative interferents,-respectively, but cause an insignificant effect at normal urban pollutant levels, 33 In a collaborative test, it was concluded that this method will produce accurate, precise measurements of ambient NO 2 concentrations, 34 and indeed the method has been adopted by a number of air monitoring networks. The lower detection limit is reported as 8 |Ag/m~3.…”

Section: A Sulfur Compounds 1 Sulfur Dioxidementioning

confidence: 98%

Recent Advances In Air Pollution Analysis

Harrison¹,

Stevens²

1984

C R C Critical Reviews in Analytical Chemistry

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Evaluation of the Sodium Arsenite Method for Measurement of NO₂in Ambient Air

Cited by 17 publications

References 4 publications

A retrospective approach to assess human health risks associated with growing air pollution in urbanized area of Thar Desert, western Rajasthan, India

A retrospective approach to assess human health risks associated with growing air pollution in urbanized area of Thar Desert, western Rajasthan, India

Drivers of PM_2.5 Episodes and Exceedance in India: A Synthesis From the COALESCE Network

Recent Advances In Air Pollution Analysis

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Evaluation of the Sodium Arsenite Method for Measurement of NO2in Ambient Air

Cited by 17 publications

References 4 publications

A retrospective approach to assess human health risks associated with growing air pollution in urbanized area of Thar Desert, western Rajasthan, India

A retrospective approach to assess human health risks associated with growing air pollution in urbanized area of Thar Desert, western Rajasthan, India

Drivers of PM2.5 Episodes and Exceedance in India: A Synthesis From the COALESCE Network

Recent Advances In Air Pollution Analysis

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Evaluation of the Sodium Arsenite Method for Measurement of NO₂in Ambient Air

Drivers of PM_2.5 Episodes and Exceedance in India: A Synthesis From the COALESCE Network