Monitoring and Investigation on Benzene of Indoor Air

Benzenes in indoor air of 52 urban renovated rooms were monitored.it was found that benzene and xylene were the major pollutions in the renovated rooms,and exceeded standards over 83% and 100% respectively,toluene and inter-xylene not detected;In renovated after 15 d (3 samples),3 months (12 samples),4 months (9 samples),5-month (10 samples ),6 months (9 samples),7 months (9 samples) monitoring respectively benzenes in indoor air,and analyzing of the release rules,benzene,p-xylene and xylene decreased gradually with time,through SPSS 17.0 software Spearman correlation analyzing showed that the three were significantly correlated at the level 0.01,with o-Xylene no correlation.