Relationship of different ages, sex and blood lead levels of children in Anshan city

ObjectiveTo investigate blood lead levels(BLLs)in children aged 3 to 6 years in Anshan and to enlighten relationship of BLLs and factors(age,sex).MethodsStratified-clustered-random sampling was used.Blood samples were collected from 408 subjects(217 boys and 191 girls)in five kindergartens.The age range of the subjects was 3 to 6 years.BLLs were analyzed by graphite atomizerabsorption spectr ophotometer.Related factors were investigated using a standardized questionnaire.ResultsBLLs of children had significant differences among the five kindergartens.There was no significant differences of BLLs between sex.But an age-related increase was found in boys aged 3 to 6 years.ConclusionPresently problem of children lead poisoning in Anshan becomes more serious,and effective therapeutic measures should be initiated.