Simultaneous Determination of Nitrogen Dioxide and Sulfur Dioxide in the Air by Passive Individual Samplers
- VernacularTitle:被动式个体采样器在监测空气中NO_2和SO_2浓度中的应用
- Author:
Xinyu WANG
;
Jinliang ZHANG
;
Yanhong LI
- Publication Type:Journal Article
- Keywords:
Air pullotion;
Sulfur dioxide;
Nitrogen dioxide;
Passive individual sampler;
Ion chromatographic technique
- From:
Journal of Environment and Health
1993;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the feasibility for applying passive individual samplers to determine NO2 and SO2 in the air simultaneously and to monitor the levels of them in the indoor and outdoor air. Methods Ten households were selected in urban and suburban area of Beijing respectively. Passive individual sampler made by Green blue Co. in Japan was used to sample and the ion chromatographic technique was used to determine the concentration of NO2 and SO2. Results There was no significant difference had been seen between the NO2 and SO2 level monitored by passive sampler and by the assay recommended by the national standard. It showed that the levels of NO2 and SO2 in ambient air were higher that that in indoor air, both indoor and outdoor air pollution in the urban area was more serious than that in the suburban area. The outdoor sulfur dioxide concentration in the urban area in winter was as 3.14 times high as that in the suburban area in 2001. The level of sulfur dioxide in the urban ambient air in 2002 was much lower than that in 2001. Conclusion Passive individual samplers with molecular diffusion will be suitable for environmental quantity monitoring.
