天津市高校大学生碘营养状况调查  

Survey on iodine nutrition among college students in Tianjin

作　　者：郎鸣晓[1,2] 屈同钧[1,2] 卢醒[1,2] 史凯斌[1,2] 郑芳[1,2] 张媛[3] 林来祥[1] 

机构地区：[1]天津医科大学内分泌研究所卫生部激素与发育重点实验室,天津300070 [2]天津医科大学临床七年制 [3]天津医科大学基础医学院

出　　处：《环境与健康杂志》2012年第9期816-818,共3页Journal of Environment and Health

基　　金：天津医科大学基础医学院大学生创新基金(2011)

摘　　要：目的了解天津市高校大学生碘营养水平,分析其影响因素。方法采用随机抽样调查方式,于2010年10月至2011年5月在天津市5所大学收取学生晨尿样本共计296份,每校采集饮用水供水点水样品3份,共计15份,每校采集食堂盐样品2份,共计10份。采用过硫酸铵消化砷铈催化分光光度方法测定尿碘及水碘,直接滴定法测定盐碘。同时向调查对象现场发放碘营养状况调查问卷,分析碘营养影响因素。结果 296份尿液样品尿碘中位数为211.20μg/L;医学专业学生尿碘水平(263.86μg/L)高于非医学专业学生(166.61μg/L),差别有统计学意义(P<0.05);对碘营养知识较了解者尿碘水平较不了解者有增高趋势;吸烟者、素食者、饮酒者尿碘水平较不吸烟者、非素食者、日常饮水或饮茶者有降低趋势,但无统计学差别。此外,性别及日常饮水等因素对尿碘水平影响不明显。所采集15份水样碘含量在7.60～10.67μg/L之间,平均8.39μg/L。10份盐样中4份为非碘盐,其余均合格。结论本次调查的高校大学生碘营养水平处于充足和可接受水平。大学生碘营养水平受生活习惯及专业知识等因素影响。Objective To investigate the iodine nutrition among the college students in Tianjin and the main influencing factors. Methods Random sampling was used in this survey. Morning urines of 296 college students were collected from five universities in Tianjin. Three samples of water and two of salts were collected from each school. The iodine contents in urine and water were measured by As3＋-Ce4＋ catalytic spectropbotometry using the ammonium persulfate digestion. The iodine content in salt was measured by direct titration. Questionnaires were collected from the students on site for analyzing impact factors on iodine nutrition from Oct., 2010 to May, 2011. Results The median of urine iodine contents in the total 296 observations was 211.20 μg/L. The median of urine iodine of the medical students was higher （263.86 μg/L） than that of the non-medical students （166.61 μg/L） with statistical significance （P〈0.05）. The median of urine iodine of smokers, vegitarian and alcohol user had a reducing trend compared with those of the non-smokers, people who eat a little meat or frequently and who usually drank tea. Besides, drinking purified water or tap-water and gender did not seem to influence urine iodine levels. Meanwhile, students who had a better knowledge about iodine nutrition had a rising trend compared with those who did not. The iodine contents of the 15 water samples collected from the five universities were 7.60 μg/L to 10.67 μg/L. Four of 10 salt samples were non-iodized salt. Conclusion The iodine nutrition among college students in Tianjin is sufficient and acceptable. The iodine nutrition is affected by living habits and iodine nutrition knowledge.

关 键 词：碘营养 尿碘 高校大学生 

分 类 号：R181.3[医药卫生—流行病学]