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目的了解济宁市青春前期儿童血铅含量,探讨铅对青少年儿童行为发育的影响。方法采用随机化的原则获得143名11～14岁青少年儿童,利用青少年自评量表进行行为调查,应用微分电位溶出法测定全血中铅的含量。结果济宁市青春前期儿童血铅平均水平为58.30μg/L,男生血铅水平、铅中毒人数低于女生,行为异常的儿童血铅水平及铅中毒率高于行为正常组。血铅含量与注意缺陷、违纪行为、攻击行为呈现正相关性(r依次为0.187、0.193、0.213),且有统计学意义。结论铅是影响儿童行为发育的主要因素,针对青春前期儿童应减少其对环境中铅的接触。
Objective To understand the content of blood lead in preteen children in Jining and explore the influence of lead on the behavior and development of adolescent children. Methods A total of 143 adolescents aged from 11 to 14 were recruited using the principle of randomization. Behavioral investigation was conducted by using the self-rating scale of adolescents. The content of lead in whole blood was determined by differential potentiometric stripping method. Results The average level of blood lead was 58.30μg / L in pre-adolescent children in Jining. The level of blood lead and the number of lead poisoning in boys were lower than those in girls. The level of blood lead and lead poisoning in children with abnormal behavior were higher than those in normal behavior group. There was a positive correlation between blood lead levels and attention deficit, discipline, and aggression (r = 0.187, 0.193, and 0.233, respectively), with statistical significance. Conclusion Lead is the main factor that affects children’s behavior and development, and should reduce their contact with lead in the environment for children in early adolescence.