Total volatile organic compound concentration and its influencing factors in urban indoor air after decoration  

作　　者：LIU Jian Lei BAI Ge CHEN Jie ZHU LiZhong GUO WeiQiang SHEN XueYou 

机构地区：[1]Department of Environmental Science, Zhejiang University, Hangzhou 310058, China [2]Deqing Environmental Monitoring Central Station, Huzhou 313200, China [3]Department of Chemistry, Zhejiang University, Hangzhou 310058, China [4]Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China

出　　处：《Chinese Science Bulletin》2011年第25期2683-2689,共7页

基　　金：supported by the National Natural Science Foundation of China (20890111,20977075);National High-Tech R&D Program of China (2010AA064902);the Key Innovation Team for Science and Technology of Zhejiang Province (2009R50047)

摘　　要：The indoor total volatile organic compound (TVOC) concentrations and their relationship to potential influencing factors were evaluated. Samples (n = 2302) were collected from 2007 to 2009 both in old structures and new construction in the city of Hangzhou from bedrooms, sitting rooms and studies that had been decorated within the previous year. The average TVOC concentration in all the newly decorated rooms was 0.65±0.69 mg/m 3 . 35.8% of samples exceeded the China standard. Over the past 3 years, the TVOC concentration decreased and then increased (P < 0.05). The percentage of samples exceeding the China standard in the three rooms decreased in the following order: sitting room>study>bedroom. The characteristics of the TVOC source were a key factor influencing the TVOC concentration. In addition, the TVOC concentration was also (P < 0.05) related to the temperature, humidity, time from the end of decoration to sampling (DR), and the amount of time windows and doors were closed before sampling (DC). The temperature and humidity were less important than the DR and DC. A model to relate the TVOC concentration to the five factors (temperature, humidity, source, DR, and DC) was established based on 288 samples (R 2 = 0.83). The model illustrated that the time for the TVOC concentration to meet the China standard was different for the various rooms, and when the other factors were fixed, the impact of DC (t 1 ) on the TVOC concentration could be quantified as (((t 1 +1)/2) 0.212 1)×100%.The indoor total volatile organic compound （TVOC） concentrations and their relationship to potential influencing factors were evaluated. Samples （n = 2302） were collected from 2007 to 2009 both in old structures and new construction in the city of Hang-zhou from bedrooms, sitting rooms and studies that had been decorated within the previous year. The average TVOC concentration in all the newly decorated rooms was 0.65±0.69 mg/m^3. 35.8% of samples exceeded the China standard. Over the past 3 years, the TVOC concentration decreased and then increased （P 〈 0.05）. The percentage of samples exceeding the China standard in the three rooms decreased in the following order： sitting room〉study〉bedroom. The characteristics of the TVOC source were a key factor influencing the TVOC concentration. In addition, the TVOC concentration was also （P 〈 0.05） related to the temperature, humidity, time from the end of decoration to sampling （DR）, and the amount of time windows and doors were closed before sampling （DC）. The temperature and humidity were less important than the DR and DC. A model to relate the TVOC concentration to the five factors （temperature, humidity, source, DR, and DC） was established based on 288 samples （R^2=0.83）. The model illustrated that the time for the TVOC concentration to meet the China standard was different for the various rooms, and when the other factors were fixed, the impact of DC （h） on the TVOC concentration could be quantified as （（（t1＋1）/2）0.212-1）×100%.

关 键 词：总挥发性有机化合物 影响因素 室内空气 浓度 装修 城市 TVOC 中国标准 

分 类 号：X51[环境科学与工程—环境工程]