Blood Lead Level of Children and the Effect of Intervention in Fangshan District

Objectives To investigate the blood lead level of children in Fangshan District, and to evaluate the effect of intervention.

Methods The living environment, dietary habits and other information of 3 209 children selected by random sampling were investigated by questionnaires. The concentration of blood lead was determined by differential potentiometric stripping method. The blood lead level of children with lead poisoning symptoms was determined after intervention for 6 months.

Results The average blood lead level of 3 209 children was 40.99±12.91 μg/L. The blood lead concentration of children with poisoning symptoms was significantly higher than that of children without symptoms, and which was reduced after intervention from 59.50±8.10 μg/L to 36.36±8.98 μg/L.

Conclusions The blood lead level of children in Fangshan District was in a lower level. The blood lead level of children with poisoning symptoms can be significantly reduced by intervention methods.