Study on the Pollution Characteristics and Health Risks of Volatile Organic Compounds in Indoor Air of Public Rental Housing in a City of South China
In order to understand the characteristics of indoor air pollutions in newly decorated public rental houses and assess their environmental health risks,this study analyzed the multi-component chemical substances(33 indicators)of Volatile organic compound(VOCs)in public rental houses in a city in southern China.Finally,the carcinogenic and non carcinogenic risks of typical VOCs were evaluated.The results showed that five typical toxic and harmful chemicals were screened,namely benzene,ethylbenzene,m-xylene,1,1,2,2-tetrachloroethane,and formaldehyde.The lower the decoration level,the higher the floors,and the longer the decoration time of public rental housing,the lower the concentration of pollutants.According to the cancer risk assessment of different age groups,the cancer risk of 1,1,2,2-tetrachloroethane and formaldehyde exceeded 1×10-6,which risk value cannot be ignored.And the younger the age,the greater the risk of cancer.According to the non carcinogenic risk assessment,the non carcinogenic risks of benzene,ethylbenzene,m-xylene,p-xylene and formaldehyde were respectively 3.3×10-3,9.8×10-4,4.7×10-4,1.99,indicating that formaldehyde poses a non carcinogenic health risk..
public rental housingvolatile organic compoundhealth risk assessmentcarcinogenic risknon carcinogenic risk