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目的 了解北京市推广使用无铅汽油后学龄前儿童血铅水平。方法 采用ASV方法对 136 0名 2～ 6岁保健门诊儿童血铅水平进行测定 ,同期检测 6 16名幼儿园儿童并比较。结果 检测 1976名儿童中 ,铅中毒 (血铅水平 >10 μg/dl,1μg/dl=0 .0 4 83μmol/L)儿童 2 5 8人 ,占 13.1% ,幼儿园和儿童保健门诊儿童平均血铅水平分别为 (4 .93± 3.3) μg/dl、(6 .6 2± 4 .5 7) μg/dl,两组间差异有显著性P <0 .0 0 1。 结论 北京市儿童血铅水平及流行率明显下降 ,幼儿园儿童低于保健门诊儿童。
Objective To understand the blood lead levels of preschool children in Beijing after the promotion of the use of unleaded gasoline. Methods The ASV method was used to measure blood lead levels in 136 0 health care outpatients aged 2 ~ 6 years. Sixty-six kindergarten children were tested during the same period. Results Among 1976 children, 258 were children with lead poisoning (blood lead level> 10 μg / dl, 1 μg / dl = 0.0453 μmol / L), accounting for 13.1%. The mean blood lead levels of kindergartens and child health clinics (4.93 ± 3.3) μg / dl and (6.26 ± 4.57) μg / dl, respectively. There was a significant difference between the two groups (P <0.01). Conclusions Blood lead level and prevalence in children in Beijing decreased significantly, while children in kindergartens were lower than those in health clinics.