武汉市200例幼儿尿硒及尿碘含量分析

Level analysis of urinary selenium and iodine status among 200 children in Wuhan

目的了解幼儿硒和碘的营养状况，为相关疾病的防治提供科学依据。方法对武汉市某幼儿园200例3～5岁幼儿尿硒及尿碘含量进行检测及分析。结果幼儿的尿硒及尿碘中位数分别为20．5μg／L和301．5μg／L，未检出尿硒及尿碘过低（尿硒〈51μg／L，尿碘〈50μg／L）的样本。尿碘在300μg／L以上的样本占总样本量的50．0％。尿硒有随年龄增长而降低的趋势（χ2=10．152，P=0．007〈0．05）各年龄及性别组间尿硒及尿碘水平经方差分析均无显著性差异（均P〉0．05）。结论武汉市该幼儿园幼儿有可能为碘过量趋势，尿硒水平为24．5±14．2μg/L。

Objective To investigate the selenium and iodine nutritional status among children so as to provide scientific data for prevention and treatment of related diseases. Methods The levels of urinary selenium and iodine of 200 children aged 3-5 years in a kindergarten in Wuhan were determined and analyzed. Results The median urinary selenium and iodine was 20.5μ g/L and 301.5μg/L, respectively. There was no sample whose urinary selenium and urinary iodine level was too low （urinary selenium 〈 5μg/L, urinary iodine 〈 50μ g/L）, and there were 50.0% of total samples with urinary iodine 〉 300μg/L. The level of urinary selenium showed a downward trend with age increasing（χ2 = 10. 152 ,P 〈 0.05 ）. The variance analysis showed that there was no significant difference in level of urinary selenium and urinary iodine between different age or sex groups （ all P 〉 0.05 ）. Conclusion Children in the kindergarten in Wuhan have the trend of iodine excess. The lever of urinary selenium is 24.5 ± 14.2μg/L.