BTEX公司
洗衣店
室内空气质量
乙醛
环境科学
甲醛
甲苯
苯
室内空气
环境化学
乙苯
早晨
化学
废物管理
环境工程
医学
有机化学
乙醇
内科学
工程类
作者
Huixiong Lü,Quan-Ying Cai,Sheng Wen,Yonggang Chi,Songjun Guo,Guoying Sheng,Jiamo Fu,Athanasios Katsoyiannis
标识
DOI:10.1016/j.jhazmat.2010.01.138
摘要
The occurrence of carbonyl compounds and benzene, toluene, ethylbenzene and xylenes (BTEXs) was assessed in the indoor and outdoor air of a hospital in Guangzhou, China. The pharmacy room, the preparing traditional Chinese medicine room, the supply room (where the medical appliances are disinfected), the laundry and the garbage room were selected as sampling sites. Acetaldehyde (ranging from 4.56 to 66.8 μg m−3) was in all samples the most abundant among the 18 carbonyls detected, and toluene (ranging from 33.5 to 264 μg m−3) among the BTEXs. The indoor/outdoor (I/O) concentration ratios of BTEXs in the morning were always >1.0, and close to 1.0 or slightly <1.0 in the afternoon, while the concentration ratios of carbonyls in the afternoon showed large variation. These ratios demonstrate the significance of outdoor emissions that deteriorate the indoor air quality at the various rooms of the hospital. The possible sources of BTEXs and carbonyls in these rooms are discussed with the use of specific ratios and with the use of statistical methods, like principal components analysis.
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