泰安市学龄儿童血铅水平及对身心健康的影响研究

Study on the blood lead level of school-age children in Tai'an city and its effect on their physical and mental health

目的了解泰安市学龄儿童血铅水平与身心健康的相关性。方法采用原子吸收法测600例小学生血铅含量;对其中70例高血铅（≥100μg/L）、110例低水平铅暴露者（3099μg/L）进行临床表现调查与部分血液指标检测,采用Conners父母量表评定行为问题,且与正常者比较。结果儿童男女性别间无显著性差异,但随着年龄的增长,血铅水平增高的比例明显上升。高血铅组、低水平铅暴露组临床症状的发生率均高于正常者,平均红细胞容积、平均红细胞血红蛋白量均低于正常者（P均〈0.05）。结论学龄期儿童临床症状出现频率与血铅水平有相关性,铅污染与学龄期儿童年龄有相关性;铅污染不同年龄学龄期儿童临床症状出现频率与血铅水平有相关性。

Objective It is to explore correlation between blood lead level and physical and mental health in school-age children in Tai＇an city.Methods Blood lead contents of 600 pupils were measured by atomic absorption method.Clinical syndromes were investigated and some blood indexes were determined in 70 cases of high blood lead （≥100 μg/L） and 110 cases of low-level lead exposure（30～99 μg/L）,their behavioral problems were evaluated by Conners parent volume table,and compared with normal students.Results Differences between male and female children were not significant,but with age the proportion of increased blood lead levels increased significantly.Incidence rates of clinical syndromes in high blood lead group and low-level lead exposure group were higher,mean corpuscular volume,mean corpuscular hemoglobin were all lower than that in normal ones（all P〈0.05）. Conclusion The frequency of clinical symptoms has a correlation with blood lead levels in school-age children,lead pollution is related to their age.In lead contamination of school-age children of different age groups the frequency of clinical symptoms are related to each other.