番禺区南村镇学龄前儿童锌、铁、钙、铅微量元素调查与分析

目的 探讨番禺区南村镇学龄前儿童血液中锌、铁、钙、铅的含量,以便健康地指导儿童膳食.方法 以2011年1 ~ 3月前来检查的1 400例0~6岁儿童为对象,利用北京普析通用TAS-990型原子吸收分光光度计进行血液中锌、铁、钙、铅4种微量元素测定,并对检测结果进行统计分析.结果 该镇儿童锌缺乏率为2%,铁缺乏率为0.79%,钙元素缺乏率0%,结果表明该镇儿童锌与铁元素缺乏率较低,钙元素并不缺乏;而铅中毒率高达26.79%,明显高于全国10.45%的水平;男女儿童性别之间差异无统计学意义(P>0.05).结论 该镇学龄前儿童锌、铁、钙元素含量处于较理想水平,而铅中毒率较高,应引起有关部门的高度重视.

Investigation and analysis of blood zinc,iron,calcium and lead levels of pre-school children in Nancun town of Panyu district

Objective To investigate the levels of blood zinc,iron,calcium and lead in the pre-school children at Nancun town of Panyu district in order to guide the pre-school children on a healthy diet.Methods During January 2011-March 2011,1400 pre-school children aged 0-6 years for physical examination were taken as the subjects.The blood levels of the trace elements（zinc,iron,calcium and lead） were detected by the Beijing Purkinje General TAS-900 atomic absorption spectrophotometer and the results were analyzed statistically.Results According to the results,the zinc deficiency rate was 2%,the iron deficiency rate was 0.79% and the calcium deficiency rate was 0%.The results showed the low deficiency rate of zinc and iron elements without calcium deficiency in pre-school children of this town.The average rate of lead poisoning was reached up to 26.79%,significantly higher than the national level of 10.45%.Difference between boys and girls had no statistical significance（P0.05）.Conclusion The content of blood zinc,iron,calcium and lead of preschool children in this town is in a relatively ideal level,but the average rate of lead poisoning is slightly higher,which should be attached great importance by relevant departments.