Comparison of peak and average nitrogen dioxide concentrations inside homes
Comparison of peak and average nitrogen dioxide concentrations inside homes
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DOI：
10.1016/j.atmosenv.2006.06.042
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发表时间：
2006-12-01
影响因子：
5
通讯作者：
Dingle, Peter
中科院分区：
文献类型：
--
作者：
Franklin, Peter;Runnion, Tina;Dingle, Peter
大多数测量室内二氧化氮（NO2）浓度的健康研究都使用了长期被动监测器。然而，这种方法可能无法提供关于短期峰值的足够信息，而这在审查这种污染物的健康影响时可能很重要。本研究的目的是调查短期峰值（峰值）和长期平均（平均）NO2浓度之间的关系在厨房和燃气灶对这种关系的影响。峰值和平均NO2水平同时测量在厨房的53个家庭使用被动采样技术。所有的家庭都是无烟的，采样是在夏季进行的。所有家庭的几何平均数（95%置信区间（CI））平均NO2浓度为16.2 μ g m（-3）（12.7-20.6 μ g m（-3））。有和没有煤气灶的家庭之间没有差异（p = 0.40）。NO2浓度峰值的几何平均值（95%CI）为45.3 μ g m（-3）（36.0-57.1 μ g m（-3））。与平均浓度不同，使用燃气灶的家庭中的峰值浓度（64.0 μ g m（-3），48.5-82.0 μ g m（-3））明显高于非燃气家庭（25.1 μ g m（-3），18.3-35.5 μ g m（-3））（p < 0.001）。在所有家庭中测得的峰值浓度和平均浓度之间只有中等程度的相关性（r = 0.39，p = 0.004）。然而，当数据分别分析的基础上存在的气体炊具，峰值和平均NO2浓度之间的相关性得到改善，在非气体家庭（r = 0.59，p = 0.005），但在家庭与气体炊具（r = 0.19，p = 0.33）并不显着。这些结果表明，平均NO2浓度并不能充分识别可能由燃气灶引起的NO2短期峰值暴露。许多流行病学研究中缺乏接触高峰数据，这可能解释了一些不一致的结果。(c)2006爱思唯尔有限公司保留所有权利。
Most health studies measuring indoor nitrogen dioxide (NO2) concentrations have utilised long-term passive monitors. However, this method may not provide adequate information on short-term peaks, which may be important when examining health effects of this pollutant. The aims of this study were to investigate the relationship between short-term peak (peak) and long-term average (average) NO2 concentrations in kitchens and the effect of gas cookers on this relationship. Both peak and average NO2 levels were measured simultaneously in the kitchens of 53 homes using passive sampling techniques. All homes were non-smoking and sampling was conducted in the summer months. Geometric mean (95% confidence interval (CI)) average NO2 concentrations for all homes were 16.2 mu g m(-3) (12.7-20.6 mu g m(-3)). There was no difference between homes with and without gas cookers (p = 0.40). Geometric mean (95% CI) peak NO2 concentrations were 45.3 mu g m(-3) (36.0-57.1 mu g m(-3)). Unlike average concentrations, peak concentrations were significantly higher in homes with gas cookers (64.0 mu g m(-3), 48.5-82.0 mu g m(-3)) compared to non-gas homes (25.1 mu g m(-3), 18.3-35.5 mu g m(-3)) (p < 0.001). There was only a moderate correlation between the peak and average concentrations measured in all homes (r = 0.39, p = 0.004). However, when the data were analysed separately based on the presence of gas cookers, the correlation between peak and average NO2 concentrations was improved in non-gas homes (r = 0.59, p = 0.005) but was not significant in homes with gas cookers (r = 0.19, p = 0.33). These results suggest that average NO2 concentrations do not adequately identify exposure to short-term peaks of NO2 that may be caused by gas cookers. The lack of peak exposure data in many epidemiological studies may explain some of the inconsistent findings. (c) 2006 Elsevier Ltd. All rights reserved.