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为了解2006—2009年广州市儿童血铅水平的变化情况,分别于2006和2009年在广州市幼儿园、小学及医院儿保科就诊者中抽取志愿检测者,经家长或监护人知情同意后抽取静脉血2 ml,分别用电感耦合等离子体质谱仪或钨舟原子吸收分析仪检测血铅水平。结果显示,2006年检测的2 373名2～12岁儿童中,血铅平均值为60.7μg/L,血铅超标60人,占2.5%;2009年检测的3 227名0～6岁儿童中,血铅平均值为46.0μg/L,血铅超标78人,占2.4%。2009年检测的2～6岁儿童比2006年同年龄组儿童平均血铅水平下降,差别有统计学意义(t=9.491,P<0.001)。2次血铅测定结果均为男童高于女童(P<0.05),2006年郊区儿童血铅水平高于市中心区和郊县(P<0.05),2009年郊县儿童血铅水平高于市中心区和郊区(P<0.05)。可见广州市儿童血铅水平3年间有所下降。
In order to understand the changes of blood lead level of children in Guangzhou from 2006 to 2009, volunteers were selected from patients who were admitted to kindergartens, primary schools and hospitals in Guangzhou in 2006 and 2009, respectively, and venous blood was drawn after informed consent from parents or guardians 2 ml, blood lead levels were measured by inductively coupled plasma mass spectrometry or tungsten boat atomic absorption spectrometry, respectively. The results showed that among the 2 373 children aged 2 to 12 years old in 2006, the mean blood lead was 60.7 μg / L and the blood lead exceeded 60 people, accounting for 2.5%. Of the 3 227 children aged 0-6 years tested in 2009 , Blood lead average 46.0μg / L, blood lead exceeded 78 people, accounting for 2.4%. The average level of blood lead in children aged 2 ~ 6 years old in 2009 was lower than that of children in the same age group in 2006, with a significant difference (t = 9.491, P <0.001). Blood lead levels were higher in boys than in boys (P <0.05). Blood lead levels in suburban children in 2006 were higher than those in downtown and suburbs (P <0.05). Blood lead levels in suburban counties in 2009 were higher than Downtown and suburbs (P <0.05). Shows that children’s blood lead levels in Guangzhou 3 years decreased.