选取天津市某社区作为采样点,于2009年8、9月(代表非采暖季)和11、12月(代表采暖季)采集了室内和室外可吸入颗粒物(PM10)样品,以研究天津市PM10及元素的室内外相关性.结果表明,采暖季PM10的室外平均浓度为198.88μg/m3.非采暖季和采暖季PM10的室内外浓度比(I/O比值)的变化范围分别为0.14～3.22和0.10～3.70,平均值分别为0.88和0.96,室内外相关系数(R2)分别为0.32和0.46.Al、Ca、Fe等元素的浓度均高于lμg/m3,V、Mn、Cu等元素浓度变化范围为0.01～1μg/m3;非采暖季和采暖季元素I/O比值的变化范围分别为0.62～1.04和0.41～0.92.以采暖季为例,使用PM10质量(元素)浓度的质量平衡模型计算的有效穿透因子(Finf)、贡献值、贡献率分别为0.26(0.39)、50.84μg/m3(78.69μg/m3)、43.97％(50.05％),两种结果存在差异的原因是2种模型对Finf的假设不同.%μIn order to investigate the relationships of indoor and outdoor particulate matter (PM10) in Tianjin, researchers collected indoor and outdoor PM10 samples in a community in 2009 August, September(represent non-heating season), November and December (represent heating season). The results demonstrate that the average concentration of PM10 in heating season is 198.88μg/m3. The variation ranges of PM10 indoor-outdoor ratio in non-heating and heating season are 0.14-3.22 and 0.10-3.70, respectively, and the average values are 0.88 and 0.98, respectively. The correlation coefficients of indoor and outdoor PM10 are 0.32 and 0.46 in non-heating and heating seasons, respectively. The concentrations of several elements, such as aluminum, calcium and iron, are exceeding 1μg/m3. The variation range of concentrations of vanadium, manganese and copper is from 0.01μg/m3 to lμg/m3. The non-heating season and heating season elements I/O value variation range are 0.62～1.04 and 0.41-0.92. Take heating season for example, the infiltration factor (Finf), contribution and contribution rate calculated by mass balance model using PM10 mass concentrations (element) are 0.26(0.39),50.84μg/m3(78.69μg/m3), 43.97%(50.05%), respectively. The difference between both results attributes to the different assumings on infiltration factor.
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