2009年青海省玉树州碘盐覆盖率较低地区8～10岁儿童碘营养水平监测分析

摘要

目的 了解青海省玉树州碘盐覆盖率较低地区8～10岁儿童碘营养水平,为制订防治措施提供科学依据.方法 2009年,在青海省玉树州非碘盐率较高的玉树、称多、囊谦、杂多4个县,每个县抽取3个乡,每个乡抽取2所小学,每所学校抽取40名8～10岁儿童,采集1次即时尿样,采用过硫酸铵-砷铈催化分光光度法测定尿碘.结果 囊欠县、杂多县8～10岁儿童尿碘中位数均<100μg/L.玉树县尿碘<50μg/L的比例>20%;囊欠县8～10岁儿童尿碘中位数均<100 μg/L并且<50μg/L的比例>20%;杂多县10岁儿童的尿碘中位数为81.5μg/L,8、9岁儿童尿碘<50μg/L的比例均>20%;玉树县9、10岁儿童尿碘<50μg/L的比例>20%;杂多县的女性儿童的尿碘中位数为87.1μg/L,男性儿童尿碘<50μg/L的比例>20%;玉树县女性儿童尿碘<50μg/L的比例>20%.结论 由于非碘盐的冲击,囊欠县、杂多县、玉树县的8～10岁儿童的碘营养水平处于很低的状态,建议该地区加强盐业市场管理,提高碘盐覆盖率及食用率,改善人群碘营养水平,有效预防碘缺乏病.%Objective An analysis was conducted to investigate the iodine nutrition level of children aged 8 - 10 in low-coverage area of iodized salt of Yushu Qinghai province for providing a scientific basis for the development of effective preventive measures. Methods Yushu, Chengduo, Nangqian and Zaduo counties with higher non-iodized salt coverage rate in Yushu Qinghai province were chosen as survey counties in 2009. Three townships were selected in each county, and 2 primary schools were selected in each township and 40 urine samples of children aged 8-10 were collected randomly in each primary school. The content of urinary iodine was analyzed by As-Ce catalytic spectrophotometery. Results Median urinary iodine of children aged 8 - 10 in Nangqian and Zaduo was < 100 μg/L. The percentage of median urinary iodine < 50 μg/L in Yushu was over 20%. Median urinary iodine of children aged 10 in Zaduo was 81.5 μg/L, the percentage of median urinary iodine < 50 μg/L of children aged 9 and 10 was over 20%. The percentage of median urinary iodine < 50 μg/L in children aged 9 and 10 of Yushu was over 20%. Median urinary iodine of girls in Zaduo was 87.1 μg/L, the percentage of median urinary iodine < 50 μg/L of boys in Zaduo was over 20%. The percentage of median urinary iodine < 50 μg/L of girls in Yushu was over 20%. Conclusions The iodine nutrition level of children aged 8 - 10 in Nangqian, Zaduo and Yushu counties were very low due to the impact of non-iodized salt. We propose salt market in the region to strengthen management and improve the coverage and consumption rates of iodized salt to improve the level of iodine nutrition for effective prevention of iodine deficiency disorders.