Concentrations and Sources of Vocs in Occupied Residences with Children
Indoor Volatile organic compounds(VOCs)are one of the main pollutants endangering children's health.This paper investigated the concentration levels and potential sources of VOCs in 123 pre-school children's homes in Baotou,China.This study was a part of an epidemiological multiple-center study of asthma and allergies among children(China,Children,Homes,Health,CCHH).The research results showed that 16 kinds of VOCs,whose with detection rates are of more thanover 30％,are the main pollutants in this survey.The detection rates of all kinds of VOCs did not exceed the national standard except benzene,whose detection rate was 100％and standard-exceeding ratio was 2.4％.Overall,the concentration of total VOCs(TVOC)ranged from 3.20～1 297.1 μg/m3,with standard-exceeding ratio of 5％of the samples over the concentration of national standards.The concentrations of VOCs during the heating seasons was were significantly higher than that during the non-heating seasons.There were significant differences in the nine aromatic compounds under different decoration years.Four factors were found to be related to the source of VOCs through the principal component analysis,namely outdoor motor vehicle exhaust emissions,indoor solvent emissions,indoor floor or leather polishing agent emissions,and indoor use of insecticide and deodorant.And the results were consistent with the non-parametric test method(Kruskal Wallis test).This study provides a scientific reference for a deeper understanding of indoor VOCs pollution control and risk assessment in dry residential areas in western China.
万方数据
维普
