太原市学前儿童血铅水平的流行病学调查

Epidemiological Survey on Blood Lead Levels of Preschool Children in Taiyuan.

【目的】 了解太原市学前儿童血铅水平及影响因素。 【方法】 血铅测定采用末梢血纸片法。 【结果】 741名儿童血铅值 x±s =(0 .487± 0 .14 0 ) μmol/L ,范围为 0 .178～ 1.2 41μmol/L ,其中大于 0 .483μmol/L的有32 8人 ,占调查人数的 44.2 6 % ,工业区和近郊区儿童血铅水平与小区及普通市区内儿童有显著性差异。 【结论】 太原市学前儿童铅中毒率较高 。

Objective To estimate blood lead levels of preschool children in Taiyuan,and to identify high risk factors for lead poisoning in children. Methods Lead levels of 741 capillary blood from children aged 3 to 6 years old were checked by graphite furnace atomic absorption spectromety with filter paper method. Results The mean blood lead level was (0.486±0.140)μmol/L and 328 children(44.26%) were found with blood lead levels equal to or higher than 0.483μmol/L which is the definition of lead poisoning of children. Blood lead levels varied with geographic location.In the industrial distracts and suburbs blood lead level of children was higher than those in the city. Conclusions The blood lead level of preschool children in Taiyuan is considerably high,which may be correlated with the living environment.