太原市某办公室PM10与PM2.5的实测与研究

使用新型便携式气悬颗粒物监测仪，测定了太原市某办公楼室内外可吸入颗粒物PM10和PM2．5的质量浓度。结果表明，室内外颗粒物浓度严重超标，PM10和PM2．5分别超过了我国国家二级标准和美国二级标准。吸烟室的颗粒物浓度高于无烟室，吸烟对PM25浓度增加有很大的贡献。室内颗粒物污染比室外严重，吸烟室和无烟室的颗粒物浓度I／O（室内／室外）值均大于1，室内污染源是造成室内颗粒物浓度高的主要因素。室内外的PM2.5在PM10中所占的比重都很大，吸烟室表现得更为明显。

Real-time measurements and analyses of indoor and outdoor PM10 and PM2.5 in a common office in Taiyuan

The indoor and outdoor inhalable particulates concentrations were measured in the air of a common office in Taiyuan.It was found that both indoor and outdoor particulates concentrations(PM10 and PM2.5) exceeded the concentration limits given by the national secondary standard and the American secondary standard,respectively.In smoking rooms particulate concentrations are higher than those in nonsmoking room,and smoking has a great contribution to the increase of the concentration of PM2.5.Indoor particulates pollution is more serious than outdoor,and both the I/O(indoor/outdoor) ratio of particulate concentrations for smoking and nonsmoking rooms are higher than 1.0.Indoor pollution sources are major factors for resulting in high concentration of indoor particulates.Both indoor and outdoor PM2.5 account for a quite significant proportion of PM10.Moreover,the proportion of PM2.5 is much higher in the smoking room.