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目的了解惠州市城镇居民食用盐碘和尿碘的含量,为是否需要长期食用加碘盐提供科学依据。方法 2009年3—5月分别采集惠州市城区及其所辖惠阳区、博罗县、惠东县、龙门县部分居民家中正在使用的食盐进行盐碘测定,随机抽取全市25所小学566名学生的尿样进行尿碘的测定。用硫代硫酸钠滴定法测定盐碘的含量,用砷铈催化分光光度法测定尿碘的含量。结果共检测盐样1453份,平均碘盐覆盖率为96.1%,合格碘盐食用率为94.8%;共检测566份尿样,平均尿碘中位数为214μg/L,尿碘值<50μg/L所占比例为3.71%,尿碘值<100μg/L所占比例为11.8%,尿碘值>300μg/L所占比例为19.8%。结论惠州市城镇居民盐碘、尿碘含量达到碘缺乏病消除标准。
Objective To understand the content of salt iodine and urinary iodine in urban residents in Huizhou city and provide a scientific basis for whether iodized salt should be consumed for a long time. Methods From March to May, 2009, the salt currently being used in the urban areas of Huizhou City and the households in Huiyang District, Boluo County, Huidong County and Longmen County collected from March to May 2009 were measured for salt and iodine. 566 students from 25 primary schools Of urine samples for the determination of urinary iodine. The content of iodine salt was determined by sodium thiosulfate titration method and the urinary iodine content was determined by arsenic and cerium catalytic spectrophotometry. Results A total of 1453 salt samples were detected with an average iodine salt coverage of 96.1% and a qualified iodized salt content of 94.8%. A total of 566 urine samples were detected with an average urinary iodine median of 214 μg / L, urinary iodine value <50 μg / L accounted for 3.71%, urine iodine value <100μg / L accounted for 11.8%, urinary iodine value> 300μg / L accounted for 19.8%. Conclusion The iodine and urinary iodine content of urban residents in Huizhou City reached the standard of elimination of iodine deficiency deficiency.