【作者】 孙伟； 沈钧； 刘嘉玉； 桑仲娜； 吴蕴棠； 张万起； 陈祖培；

【Author】 SUN Wei SHEN Jun LIU Jia-yu SANG Zhong-na College of Public Health,Tianjin Medical University,Tianjin 300070,China

【机构】 天津医科大学公共卫生学院； 天津市内分泌研究所卫生部重点实验室；

【摘要】 目的了解当前市售食品碘含量,部分大学生膳食碘营养状况,碘盐对膳食摄入碘的补充作用,以及尿碘测定结果对膳食碘的反映程度。方法分层随机采集日常市售食物278份,采用砷铈接触法测定食品碘含量、膳食记录法调查学生的7日膳食情况、砷铈催化分光光度法测定尿碘。结果 47 种、278份食物样品的检测表明。动物性食品的含碘量(7．8～30．8μg/100g)高于植物性食品的含碘量(1．8 ～16．1μg/100g)。膳食调查显示该类学生中以素食为主的占70．19%,以食物碘含量的实测值和膳食调查结果计算出由食物中摄入碘的量为(111．67±53．18)μg/d,而从碘盐中补充碘量(230．27±45．55)μg/d, 那么从膳食中共可以摄入碘(341．95±89．58)μg/d。经尿肌酐校正后每克肌酐尿中碘含量中位数为 271．28μg/g Cr。结论这部分学生多数来自低收入家庭且膳食以素食食物为主,每日从膳食中摄入的碘量低于碘的推荐供给量(RDA)150μg,但是从加碘食盐中可以获得碘230．27μg,从而弥补膳食摄碘量的不足。经尿肌酐校正后的尿含碘量与膳食摄碘量呈正相关关系(r_s=0．463,P＜0．01)。更多还原

【Abstract】 Objective To know about content of iodine in foods which are sold in the markets presently, partial students’ iodine nutrition condition,the function of the iodized salt complement with the dietary iodine intake,and whether the urine iodine reflect dietary iodine intake.Methods To collect 278 samples in the market by stratified random,adopt arsenic-cerium catalytic contact method to determine the content in food,record the dietary information of students for 7 days,arsenic-cerium catalytic spectrophotometry to determine the urine iodine. Results The determination of 47 kinds and 278 food samples indicate that the content of iodine within animal foods (7.8-30.8μg/100g) is higher than within plant foods(1.8-16.1μg/100g).The investigation show that these students who regard vegetarian food as principle have 70.19%.According to these determined and dietary survey results,infer the dietary iodine intake about these students is (111.67±53.18)μg/d,but supply iodine from iodized salt about (230.27±45.55)μg/d,so can intake iodine (341.95±89.58)μg/d totally.After urine iodine is corrected by urine creatinine,the median of urine iodine is 271.28btg/gCr.Conclusion The student who were investigated are not rich mostly,they regard the vegetarian food as principle,so the dietary iodine intake is lower than RDA(150μg),but can obtain 230.27μg of iodine from the iodinzed salt,and supplement to the shortage from foods.After urine iodine is corrected by urine creatinine,the urine iodine and dietary iodine intake is positive related(r_s=0.463,P<0.01).更多还原