Investigation on blood lead levels of 3 528 children in Hangzhou city

Objective:To understand the blood lead levels and detection rate of lead poison among children under ten years in Hangzhou city.Methods:Atomic absorption spectrochemical analysis was used to detect blood lead contents of 3 528 children,the differences of blood lead content among children of different genders and children in different age groups were compared.Results:The mean value of blood lead in 3 528 children was 24.91 μg/L,the blood lead levels of 37 children were more than 100 μg/L,accounting for 1.04%;there was statistically significant difference in geometric mean value of blood lead between boys and girls,but there was no statistically significant difference in detection rate of lead poison between boys and girls;there was statistically significant difference in geometric mean value of blood lead among children in different age groups,but there was statistically significant difference in detection rate of lead poison among children in different age groups.Conclusion:The blood lead levels of children in Hangzhou city is relatively low,but lead poisoning still exists,further measures should be taken to reduce lead exposure in children.