OPEN ACCESS

Articles online

Indoor Air Pollution Levels in Decorated Residences and Public Places over Xi’an, China

Category: Aerosol and Atmospheric Chemistry

Article In Press
DOI: 10.4209/aaqr.2016.12.0542
PDF | Supplemental material | RIS | BibTeX

Tian Chang1,2, Dongxiao Ren1, Zhenxing Shen 1,2, Yu Huang2, Jian Sun1, Junji Cao2, Jiyang Zhou1, Hongxia Liu1, Hongmei Xu1, Chunli Zheng1, Hua Pan1, Chi He1

  • 1 Department of Environmental Sciences and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
  • 2 Key Lab of Aerosol Chemistry & Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710049, China

Highlights

Investigated the status quo of indoor VOCs over a typical city of Northwest China.
Investigated the environmental factors influencing indoor VOCs quantificationally.
Analyzed the resources of indoor VOCs.
Compared the concentrations of VOCs in public places and these in residential rooms.
The relationship between the IAQ and ventilation time was evaluated.


Abstract

To investigate the indoor air quality (IAQ) over Xi’an, the concentrations of volatile organic compounds (VOCs, including formaldehyde, benzene, toluene, o-xylene, p-xylene, n-butyl acetate, ethylbenzene, styrene, n-undecane, and total VOCs) in 471 residential rooms and 58 public rooms during 2014–2015 were determined. All the data were measured at a variety of 6–48 months after the decorations of these rooms. The results showed that formaldehyde was the most serious pollutant in almost all the monitored rooms. The concentrations of formaldehyde in residences and public places ranged from 0.02 mg m–3 to 0.45 mg m–3 and 0.05 mg m–3 to 0.32 mg m–3, respectively. And the concentration levels in the 83.6% selected residences and 44.8% public places exceeded the Chinese National Indoor Air Quality Standard (GB/T 18883-2002) of formaldehyde value (0.1 mg m–3). However, the TVOC concentrations in most sites were lower than the Chinese National Standard (GB/T 18883–2002) value. In residences, the formaldehyde and TVOC concentrations in bedrooms were slightly higher than those in living rooms and other rooms. The relationships among formaldehyde and TVOC concentrations with indoor temperature, relative humidity (RH), and decorative materials (curtain, wall decoration, wood floor, and panel furniture) were also investigated. Formaldehyde levels showed strong positive correlation with indoor temperature and RH. However, the TVOC levels had a relatively weak correlation with indoor air temperature and RH. The wall decoration and panel furniture were the main sources of indoor formaldehyde, while wood floor and panel furniture were the main sources of TVOC. In addition, indoor air pollution of three selected newly decorated houses with 11 rooms was monitored monthly for one year to evaluate the relationship between indoor pollution levels and ventilation time. It was found that the concentrations of formaldehyde and TVOC decreased with ventilation time, and the duration was one year after decoration especially after summer ventilation.

Keywords

Xi’an Indoor air pollution Formaldehyde TVOC


Related Article

Effect of MnO2 Crystalline Structure on the Catalytic Oxidation of Formaldehyde

Huiqi Lin, Dong Chen , Haibo Liu, Xuehua Zou, Tianhu Chen
Volume: 17 | Issue: 4 | Pages: 1011-1020
DOI: 10.4209/aaqr.2017.01.0013
PDF

High-Performance Amino-Functional Graphene/CNT Aerogel Adsorbent for Formaldehyde Removal from Indoor Air

Jie Ma, Yiran Sun, Jinhu Yang, Zichen Lin, Qianying Huang, Tian Ou, Fei Yu
Volume: 17 | Issue: 3 | Pages: 913-922
DOI: 10.4209/aaqr.2016.07.0312
PDF | Supplemental material

PM10 Sampling and AOD Trends during 2016 Winter Fog Season in the Islamabad Region

Gufran Bulbul, Imran Shahid, Farrukh Chishtie , Muhammad Zeeshaan Shahid, Rabia Ali Hundal, Fatima Zahra, Muhammad Imran Shahzad
Accepted Manuscripts
DOI: 10.4209/aaqr.2017.01.0014
PDF

Transboundary and Local Air Pollutants in Western Japan Distinguished on the Basis of Ratios of Metallic Elements in Size-Segregated Aerosols

Yuta Taniguchi, Kojiro Shimada, Akinori Takami, Neng-Huei Lin, Chak K. Chan, Yong Pyo Kim, Shiro Hatakeyama
;