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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 被引量:3

Simultaneous Determination of Nitrogen Dioxide and Sulfur Dioxide in the Air by Passive Individual Samplers
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摘要 目的探讨用被动式个体采样器进行空气质量监测的可行性。方法在北京的城区和郊区各选择10户家庭,用被动式个体采样器采样,用离子色谱法测定室内、外空气中的NO2和SO2浓度。于2001年和2002年的采暖和非采暖季节各采样1次,每次连续3d。结果用被动式个体采样器采样检测的结果与国家标准方法采样测定的结果差异无统计学意义。室外空气中NO2和SO2的浓度高于室内,其中冬季城区的NO2和SO2,夏季城区的NO2和郊区的SO2,室内外浓度的差异有统计学意义;冬季城区室外大气中NO2和SO2和室内的NO2浓度显著高于郊区,室外大气的SO2浓度是郊区的3.14倍,但是室内SO2的浓度则低于郊区,差异无统计学意义;夏季城区室内外大气中的NO2浓度均显著高于郊区;2002年城区大气环境中SO2浓度比2001年明显下降。结论被动式个体采样器可以用于大气污染物浓度监测。 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.
出处 《环境与健康杂志》 CAS CSCD 北大核心 2005年第1期41-43,共3页 Journal of Environment and Health
基金 日本公害健康被害补偿预防协会基金资助项目(kouken-5-2-2)
关键词 空气污染 二氧化硫 二氧化氮 被动式个体采样器 离子色谱法 Air pullotion Sulfur dioxide Nitrogen dioxide Passive individual sampler Ion chromatographic technique
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