Determination of nitrogen dioxide in ambient air by use of a passive sampling technique and triethanolamine as absorbent

Journal Article · Fri Mar 01 00:00:00 EST 1991 · Environmental Science and Technology; (USA)

DOI:https://doi.org/10.1021/es00015a023· OSTI ID:5479953

Krochmal, D; Gorski, L ^[1]

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1. Technical Univ. of Cracow (Poland)

The effects of temperature, humidity, and storage on a diffusive sampler were tested by use of the Amaya-Sugiura method, modified previously. Several materials were used as carriers for triethanolamine in the sampler. The mass of NO{sub 2} absorbed in the sampler was determined spectrophotometrically as nitrite by using Saltzman solution. The collection efficiency of the sampler was lower than that calculated from Fick's law of diffusion due to significant contribution of liquid phase in the overall sampler diffusive resistance. This resulted in an increase of the mass of NO{sub 2} absorbed in the sampler by ca. 20% per 10{degree}C of temperature growth and by ca. 25% when the relative humidity rose from 0 to 100%. Dependence of concentration of TEA solution in the sampler on the relative humidity of the air was noted. The relative precision of the method characterized by RSD was 10%; the detection limit of NO{sub 2} was 10 {mu}g/m{sup 3} for a 24-h exposure.

• OSTI ID: 5479953
• Journal Information: Environmental Science and Technology; (USA), Vol. 25:3; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
01 COAL, LIGNITE, AND PEAT
NITROGEN DIOXIDE
AIR SAMPLERS
SPECTROPHOTOMETRY
DATA ANALYSIS
EXPERIMENTAL DATA
HUMIDITY
MEASURING METHODS
TEMPERATURE EFFECTS
CHALCOGENIDES
DATA
EQUIPMENT
INFORMATION
NITROGEN COMPOUNDS
NITROGEN OXIDES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
SAMPLERS
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
010900 - Coal
Lignite
& Peat- Environmental Aspects