中山市室内新装修场所空气污染水平调查

Indoor Air Pollution and Particulate Matters Source at Newly Decorated Indoor Places in Zhongshan City

目的了解中山市室内新装修场所污染状况及颗粒物的来源,为室内空气污染的防控提供依据。方法选择2013—2014年中山市35间室内新装修场所作为研究对象,对其室内外PM_(2.5)和PM_(10)、室内甲醛、苯、甲苯、二甲苯和总挥发性有机化合物(TVOC)进行现场监测,对数据进行统计分析。结果新装修场所室外PM_(2.5)和PM_(10)平均质量浓度均大于室内;室内甲醛质量浓度为(0.103±0.110)mg/m^3,苯(0.013±0.002)mg/m^3,甲苯(0.051±0.126)mg/m^3,二甲苯(0.054±0.142)mg/m^3,TVOC(0.082±0.134)mg/m^3;PM_(2.5)的室内/室外(I/O)平均比值为0.996(0.307~1.769),PM_(10)为0.941(0.355~2.182);室内PM_(2.5)与PM_(10)存在显著正相关关系(r=0.933,P=0.000);室外PM_(2.5)与PM_(10)存在显著正相关关系(r=0.988,P=0.000)。结论中山市室内新装修场所污染严重,室内颗粒物的污染主要来源于室外。

Objectives To understand the status of air pollution and the source of particulate matters in newly decorated indoor places in Zhongshan city,and to provide basis for the prevention and control of indoor air pollution. Methods Indoor and outdoor PM_（2.5）and PM_（10）,indoor formaldehyde,benzene,toluene,xylene and total volatile organic compounds（ TVOC） in 35 newly decorated places were examined and analyzed. Results The average concentration of PM_（2.5）and PM_（10） in newly decorated indoor places were higher in outdoor air than that of indoor air.The indoor concentrations of formaldehyde,benzene,toluene,xylene and TVOC were 0. 103 ± 0. 110,0. 013 ±0. 002,0. 051 ± 0. 126,0. 054 ± 0. 142,0. 082 ± 0. 134 mg / m^3,respectively. The indoor/outdoor ratio（ I/O） of PM_（2.5）was 0. 996（ 0. 307- 1. 769）,and that of PM_（10） was 0. 941（ 0. 355- 2. 182）. There was a positive correlation between indoor PM_（2.5）and PM_（10）（ r = 0. 933,P = 0. 000） and that between outdoor PM_（2.5）and PM_（10）（ r = 0. 988,P =0. 000）. Conclusions The air pollution in newly decorated indoor places was severe in Zhongshan city. The indoor air pollution of PM_（2.5）and PM_（10） in newly decorated places was caused mainly by the increase of outdoor particle matters.