Nationally representative levels of selected volatile organic compounds in Canadian residential indoor air: population-based survey.
Nationally representative levels of selected volatile organic compounds in Canadian residential indoor air: population-based survey.
复制标题
DOI：
10.1021/es403055e
复制
发表时间：
2013-11
影响因子：
11.4
通讯作者：
Jiping Zhu;Suzy L. Wong;S. Cakmak
中科院分区：
文献类型：
--
作者：
Jiping Zhu;Suzy L. Wong;S. Cakmak
2009-2011年在加拿大进行了一项全面的、以人群为基础的全国室内空气调查。采用被动采样-热解吸-气相色谱/质谱法测定了3218栋住宅、546套公寓和93种其他住宅类型的84种挥发性有机碳（VOCs）。这项研究和1992年加拿大国家研究共测量了12种挥发性有机化合物。除苯乙烯含量较高（1.13 μg·m(-3)）外，本研究VOCs的算术平均值比1992年的研究低2-5倍。比较24种挥发性有机化合物的几何平均值表明，本研究中挥发性有机化合物的水平与欧洲报告的水平相当。它们通常在2倍之内；1,4-二氯苯（0.21 μg·m(-3)）和1,2,4-三甲苯（0.51 μg·m(-3)）在本研究中的含量明显低于欧洲研究。在超过50%的加拿大家庭中检测到47种挥发性有机化合物；在所有无烟家庭中，有33个家庭的吸烟率高于公寓，而只有4个家庭的吸烟率低于公寓。在47种挥发性有机化合物中，吸烟家庭中有11种高于不吸烟家庭，而其余家庭的水平相似。主成分分析确定了几组可能具有共同来源的挥发性有机化合物。
A comprehensive, population-based national indoor air survey was conducted in 2009-2011 in Canada. A total of 84 volatile organic carbons (VOCs) from 3218 houses, 546 apartments, and 93 other dwelling types were measured using passive sampling followed by thermal desorption GC/MS. A total of 12 VOCs were measured in both this study and the 1992 Canadian national study. Arithmetic means of VOCs in this study were 2-5 times lower than those in the 1992 study with the exception of a higher styrene level (1.13 μg · m(-3)). Comparing the geometric means of the 24 VOCs showed that levels for the VOCs in this study were comparable to those reported in Europe. They were generally within a factor of 2; 1,4-dichlorobenzene (0.21 μg · m(-3)) and 1,2,4-trimethylbenzene (0.51 μg · m(-3)) were noticeably lower in this study than in the European studies. There were 47 VOCs detected in more than 50% of Canadian households; 33 of them were higher in houses than in apartments for all nonsmoking homes, while only 4 were lower in houses than in apartments. A total of 11 of 47 VOCs were higher in smoking homes compared to nonsmoking homes, while the rest had similar levels. Principal component analysis identified several groups of VOCs with possible common sources.