Division of Environmental Health and Risk Management, School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
Sci Total Environ. 2011 Jan 1;409(3):478-88. doi: 10.1016/j.scitotenv.2010.10.014. Epub 2010 Nov 26.
Personal exposures of 100 adult non-smokers living in the UK, as well as home and workplace microenvironment concentrations of 15 volatile organic compounds were investigated. The strength of the association between personal exposure and indoor home and workplace concentrations as well as with central site ambient air concentrations in medium to low pollution areas was assessed. Home microenvironment concentrations were strongly associated with personal exposures indicating that the home is the driving factor determining personal exposures to VOCs, explaining between 11 and 75% of the total variability. Workplace and central site ambient concentrations were less correlated with the corresponding personal concentrations, explaining up to 11-22% of the variability only at the low exposure end of the concentration range (e.g. benzene concentrations <2.5 μg m(-3)). One of the reasons for the discrepancies between personal exposures and central site data was that the latter does not account for exposure due to personal activities (e.g. commuting, painting). A moderate effect of season on the strength of the association between personal exposure and ambient concentrations was found. This needs to be taken into account when using fixed site measurements to infer exposures.
研究了居住在英国的 100 名成年不吸烟人群的个人暴露情况,以及家庭和工作场所 15 种挥发性有机化合物的微环境浓度。评估了个人暴露与室内家庭和工作场所浓度以及中低污染地区中心位置环境空气浓度之间的关联强度。家庭微环境浓度与个人暴露密切相关,表明家庭是决定个人接触 VOC 的主要因素,解释了总变异性的 11%至 75%。工作场所和中心位置环境浓度与相应的个人浓度相关性较低,仅在浓度范围的低暴露端(例如苯浓度<2.5μg/m(-3))解释了 11%至 22%的变异性。个人暴露和中心位置数据之间存在差异的原因之一是,后者没有考虑到个人活动(例如通勤、绘画)造成的暴露。发现个人暴露与环境浓度之间关联的强度与季节之间存在中度影响。在使用固定位置测量推断暴露时,需要考虑到这一点。