Open AccessConcentration levels and impact factors of benzene series in Chinese dwellings
Author(s) -
Yin Yuan,
Beibei Hou,
Jingjing Pei,
Junjie Liu
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/609/4/042078
Subject(s) - benzene , ethylbenzene , btex , toluene , xylene , environmental chemistry , environmental science , residence , china , chemistry , geography , organic chemistry , demography , archaeology , sociology
In this study, a nation-wide field measurement has been carried out in Chinese residence to obtain BTEX(benzene series) concentration levels and characteristics. Concentrations of benzene series (benzene, toluene, xylene and ethylbenzene) indoor were sampled in 223 dwellings covering 5 climate zones in China during 2016.12-2017.12. The arithmetic mean concentrations of benzene, toluene, xylene and ethylbenzene were 6.78μg/m 3 , 17^g/m 3 , 17.68μg/m 3 and 9.87μg/m 3 , respectively. Higher concentration of BTEX and higher standard limit were founded in China than that in other countries and organizations. We identify some reasonable sources for specific data group, impact factors on decoration year, frequency of smoking and cooking of benzene series concentration were studied. Toluene concentration decreased with increase of decoration year, and concentration of benzene concentration in smoking families were higher than that in non-smoking families. No direct correlation between cooking frequency and indoor benzene concentration were founded. This study also provided statistical data on benzene exposure in new decorated residences and a discussion on setting limit values for standard.