Household concentrations and personal exposure of PM2.5 among urban residents using different cooking fuels.
Household concentrations and personal exposure of PM2.5 among urban residents using different cooking fuels.
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DOI：
10.1016/j.scitotenv.2016.01.038
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发表时间：
2016-04-01
期刊：
影响因子：
--
通讯作者：
Duan X
中科院分区：
文献类型：
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作者：
Li T;Cao S;Fan D;Zhang Y;Wang B;Zhao X;Leaderer BP;Shen G;Zhang Y;Duan X
暴露于PM2.5是导致许多疾病和过早死亡的主要环境风险因素，引起了越来越多的公众关注。在这项研究中，室内和室外PM2. 5浓度在供暖和非供暖季节在中国西北地区的城市地区进行了调查。评价了不同年龄组的个人吸入暴露水平，并讨论了不同烹饪燃料（包括煤、气和电）引起的差异。采暖季厨房和卧室PM2.5平均浓度分别为125±51和119±64 µg/m3，非采暖季分别为80±67和80±50 µg/m3。来自室内燃烧源和室外渗透的室内PM2.5约占PM2.5暴露总量的75%。与使用天然气和电力的家庭相比，使用煤炭做饭的家庭的室内浓度和吸入暴露水平要高得多。从燃煤到燃气或电力烹饪的转变可能会导致厨房中的PM2.5减少40-70%，从而降低吸入暴露水平，特别是儿童和妇女。
Exposure to PM2.5 is a leading environmental risk factor for many diseases and premature deaths, arousing growing public concerns. In this study, indoor and outdoor PM2.5 concentrations were investigated during the heating and non-heating seasons in an urban area in northwest China. Personal inhalation exposure levels among different age groups were evaluated, and the difference attributable to different cooking fuels including coal, gas and electricity, were discussed. The average concentrations of PM2.5 in the kitchen and the bedroom were 125±51 and 119±64 µg/m3 during the heating season, and 80±67 and 80±50 µg/m3 during the non-heating season, respectively. Indoor PM2.5, from indoor combustion sources but also outdoor penetration, contributed to about 75% of the total PM2.5 exposure. Much higher indoor concentrations and inhalation exposure levels were found in households using coal for cooking compared to those using gas and electricity. Changing from coal to gas or electricity for cooking could result in a reduction of PM2.5 in the kitchen by 40–70% and consequently lower inhalation exposure levels, especially for children and women.