The measurement of nitrogen dioxide in the air

Shaw, J.T.

doi:10.1016/0004-6981(67)90036-4

Cited by 12 publications

(3 citation statements)

References 4 publications

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“…Then, a reagent solution (0.5% w/v Sulfanilamide (Suzano, Brazil, Neon), 0.005% w/v N-1-Naphthyl-ethylenediamine (St. Louis, USA, Sigma-Aldrich) and 1% v/v Phosphoric Acid (St. Louis, USA, Sigma-Aldrich)) was used on the filters after the sampling period to the extraction of NO2 present in the filters and converting it into nitrite ion [NO2] -. A stock solution (0.0203 g of Sodium Nitrite P.A in 1 L of water) was prepared to construct the UV-VIS (Barueri, Brazil, Shimadzu) calibration curve, where the levels of NO2 present in the filters were determined (Dita and Dias, 2016;Lodge, 1988;Saltzman, 1954;Shaw, 1967).…”

Section: Nitrogen Dioxide Methodologymentioning

confidence: 99%

Estimation of nitrogen dioxide levels on streets from Fortaleza Brazil using passive sampling and multivariate analysis

De Sousa,

Maia,

Quintanilha

et al. 2024

Eclet. Quim.

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The increase in the fleet of motor vehicles circulating in urban centers is one of the main generators of gaseous pollutants harmful to human health and the environment. Pollutants can be economically and effectively monitored through passive sampling. This study aims to estimate NO2 levels on roads of Fortaleza city /CE using the passive sampling method. 12 campaigns covered the rainy (March-June) and the dry (July-November) seasons in 2019. The seasonal averages of NO2 in the rainy season were higher than the dry one, and Almirante Rubim Street showed the greatest difference in the averages: 26.6 µg m-3 in the rainy and 19.3 µg m-3 in the dry season. The principal component analysis applied to the averages of NO2 concentration in the rainy and dry seasons, vehicle traffic and Height of the road/width ratio indicated that components 1, 2 and 3 explain 94.4% of the studied cases. Passive sampling proved to be efficient, contributing to the production of unpublished data about NO2 levels in streets of Fortaleza/Ceará/Brazil from mobile sources.

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Section: Nitrogen Dioxide Methodologymentioning

confidence: 99%

Estimation of nitrogen dioxide levels on streets from Fortaleza Brazil using passive sampling and multivariate analysis

De Sousa,

Maia,

Quintanilha

et al. 2024

Eclet. Quim.

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“…His analyses showed that 1 mole of nitrogen dioxide was equivalent to 0.72 mole of nitrite ion. Since that time, values of the stoichiometric factor ranging from 0.5 to 1.00 have been reported (Gill, 1960;Kooiker, Schuman, et a!., 1963;Saltzman and Wartburg, 1965;Shaw, 1967;Stratmann and Buck, 1966). Buck and Stratmann (1967) maintain that the stoichiometric factor varies with concentration and approaches 1 at levels of N02 comparable to that found in the atmosphere.…”

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confidence: 99%

Comparison of permeation devices and nitrite ion as standards for the colorimetric determination of nitrogen dioxide

Scaringelli¹,

Rosenberg²,

Rehme³

1970

Environ. Sci. Technol.

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“…For this reason, it is often supplanted by modifications of the Saltzman procedure even for the higher ranges of NO* concentration. In most cases, a factor must be used since side reactions are known to occur (Koshlov and Ulitin, 1966;Murphy, 1967;Shaw, 1967).…”

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confidence: 99%