ABSTRACT
Objective To evaluate Chinese children’s blood lead levels(BLLs) and identify the distribution features with time and to provide the data for developing the policy to control environmental lead pollution.Methods The papers on children BLLs published from 2004 to Aug.2007 with sampling time since 2001 were collected,by searching Chinese Biomedical Disk(CBMDisk),Chinese Journal Full-test Database(CJFD) and other ways.Thirty-five articles eligible for inclusion criteria were reviewed.Also,the data were compared with our former study carried out in 2004 with articles studying time between 1995 and 2003.Results The mean BLL of Chinese children between 2001 and 2007 was 80.7 ?g/L(45.5-165.3 ?g/L),and 23.9%(3.2%-80.7%)were higher than 100 ?g/L,both of which were lower than the levels in 1995 to 2003.Four of 24 provinces or cities reported had average BLLs≥100 ?g/L.Of the 24 provinces or cities,only four had higher BLL and prevalence rates of lead poisoning(BLL ≥100 ?g/L) than that in 1995 to 2003.The mean BLL of children living in industrial areas was higher than that of children in urban and suburbs areas,and the mean BLL in suburbs was higher compared with urban areas.Boys BLL was 79.3 ?g/L,significantly higher than girls(76.9 ?g/L)(P