Swiss Tropical and Public Health Institute, Department of Epidemiology and Public Health, Socinstrasse 57, Basel, CH-4002, Switzerland; University of Basel, Petersplatz 1, Basel, CH-4003, Switzerland.
Sci Total Environ. 2014 Jan 15;468-469:1028-33. doi: 10.1016/j.scitotenv.2013.09.012. Epub 2013 Oct 1.
Radiofrequency electromagnetic fields (RF-EMF) are highly variable and differ considerably within as well as between areas. Exposure assessment studies characterizing spatial and temporal variation are limited so far. Our objective was to evaluate sources of data variability and the repeatability of daily measurements using portable exposure meters (PEMs).
Data were collected at 12 days between November 2010 and January 2011 with PEMs in four different types of urban areas in the cities of Basel (BSL) and Amsterdam (AMS).
Exposure from mobile phone base stations ranged from 0.30 to 0.53 V/m in downtown and business areas and in residential areas from 0.09 to 0.41 V/m. Analysis of variance (ANOVA) demonstrated that measurements from various days were highly reproducible (measurement duration of approximately 30 min) with only 0.6% of the variance of all measurements from mobile phone base station radiation being explained by the measurement day and only 0.2% by the measurement time (morning, noon, afternoon), whereas type of area (30%) and city (50%) explained most of the data variability.
We conclude that mobile monitoring of exposure from mobile phone base station radiation with PEMs is useful due to the high repeatability of mobile phone base station exposure levels, despite the high spatial variation.
射频电磁场（RF-EMF）变化很大，在不同区域和区域内差异很大。到目前为止，描述空间和时间变化的暴露评估研究还很有限。我们的目的是评估使用便携式暴露计（PEM）时数据变异性和日常测量重复性的来源。
在 2010 年 11 月至 2011 年 1 月期间的 12 天内，在巴塞尔（BSL）和阿姆斯特丹（AMS）的四个不同类型的城市地区使用 PEM 收集数据。
移动电话基站的暴露范围在市中心和商业区为 0.30 至 0.53 V/m，在住宅区为 0.09 至 0.41 V/m。方差分析（ANOVA）表明，来自不同日期的测量具有高度的可重复性（测量时间约为 30 分钟），只有 0.6%的所有来自移动电话基站辐射的测量方差可以由测量日解释，只有 0.2%可以由测量时间（上午、中午、下午）解释，而区域类型（30%）和城市（50%）解释了大部分数据的变异性。
我们的结论是，由于移动电话基站暴露水平的高度可重复性，尽管存在高度的空间变化，但使用 PEM 对移动电话基站辐射进行移动监测是有用的。
