PERSONAL EXPOSURE TO NITROGEN-DIOXIDE IN THE LOS-ANGELES BASIN
PERSONAL EXPOSURE TO NITROGEN-DIOXIDE IN THE LOS-ANGELES BASIN
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DOI：
10.1080/1073161x.1994.10467236
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发表时间：
1994-01-01
影响因子：
2.7
通讯作者：
BECKER, E
中科院分区：
文献类型：
--
作者：
SPENGLER, J;SCHWAB, M;BECKER, E
在洛杉矶盆地（美国唯一超过NO2 NAAQS的大都市区）进行了一项人体暴露于二氧化氮（NO2）的大规模研究。有482个家庭和682名个人的人口代表性样本的数据。个人暴露，以及室内和室外的家庭水平，使用被动时间积分过滤器徽章进行监测。监测持续一年（1987年5月至1988年5月），每个人提供连续两天的数据。还收集了关于活动模式、家庭和个人特征以及空间和时间变量的资料。本文介绍了研究设计，总结了样本的特点和代表性，并提出了个人，室内和室外NO2浓度的监测记录的分布。在整个样本中，个人和室外水平的中位数为35 ppb;室内水平的中位数为24 ppb。在有指示灯的煤气灶的家庭中，个人暴露量平均比有电灯的家庭高10 ppb，比没有指示灯的煤气灶高4 ppb。室内浓度变化的40%是由室外水平解释的;个人暴露变化的59%是由室内水平解释的;个人暴露变化的48%是由室外水平解释的。
A large scale study of human exposure to nitrogen dioxide (NO2) was conducted in the Los Angeles Basin, the only metropolitan area in the United States that exceeds the NO2 NAAQS. Data are available for a population representative sample of 482 households and 682 individuals. Personal exposures, as well as indoor and outdoor home levels, were monitored using passive time-integ rating filter badges. Monitoring extended over a one-year period (May 1987 to May 1988), with each individual providing two consecutive days of data. Information was also collected on activity patterns, household and personal characteristics, and spatial and temporal variables. This paper describes the study design, summarizes the sample characteristics and representativeness, and presents the distribution of personal, indoor, and outdoor NO2 concentrations recorded by the monitors. Over the entire sample, median personal and outdoor levels were 35 ppb; median indoor levels were 24 ppb. Personal exposures for those in homes with gas ranges with pilot lights average 10 ppb greater than those with electric ranges, and 4 ppb greater than those with gas ranges without pilot lights. Forty percent of the variation in indoor concentrations is explained by outdoor levels; 59 percent of the variation in personal exposures is explained by indoor levels; and 48 percent of the variation in personal exposures is explained by outdoor levels.