蚌埠市食用盐降碘前后儿童与孕妇碘营养状况调查

目的:调查居民食用盐降碘前后,蚌埠市儿童、孕妇的碘营养状况,为科学补碘、防治碘缺乏病提供依据.方法:选择食用盐降碘前后蚌埠市8~10岁学龄儿童及孕妇为研究对象,采集晨尿,采用WS/T107-2006尿中碘的砷铈催化分光光度测定法进行尿碘水平测定.并采用GB/T 13025.7中直接滴定法,对采集的居民食用盐进行碘含量分析.结果:2012年、2014年蚌埠市居民食用盐碘合格率分别为95.84%、98.43%,合格碘盐食用率分别为95.51%、98.38%.降碘前后,蚌埠市8~10岁儿童尿碘中位数分别为307.6 μg/L、264.5 μg/L,孕妇为219.6 μg/L、182.9 μg/L,食用盐降碘后蚌埠市儿童和孕妇尿碘水平均较降碘前明显降低(P<0.01).结论:食用盐降碘后蚌埠市儿童尿碘水平虽有所降低,但尿碘中位数仍处于碘摄入超适宜范围,部分儿童存在碘摄入过量问题;降碘前后孕妇尿碘中位数则均处于碘适宜范围,部分孕妇存在碘摄入不足.

Investigation of the iodine nutritional status of children and pregnant women before and after edible salt iodine decreasing in Bengbu city

Objective:To investigate the iodine nutritional status of children and pregnant women before and after edible salt iodine decreasing in Bengbu city,and provide the basis for scientific supplementing iodine and preventing iodine deficiency disease.Methods:Eight to ten years old school-age children and pregnant women in Bengbu were investigated before and after edible salt iodine decreasing.The iodine level of morning urine was detected using the WS/T107-2006 urine iodine of arsenic cerium catalytic spectrophotometry method.The iodine content of salt was detected using GB/T13025.7 direct titration method.Results:In 2012 and 2014,the qualified rates of iodine salt in Bengbu were 95.84% and 98.43%,respectively,and the consumption rate of qualified iodine salt were 95.51% and 98.38%,respectively.The urinary iodine median in 8 to 10 years old school-age children and pregnant women before and after iodine decreasing were 307.6 μg/L,219.6 μg/L and 264.5 μg/L,182.9 μg/L in Bengbu,respectively.The urinary iodine median in 8 to 10 years old school-age children and pregnant women after iodine decreasing significantly decreased compared with before iodine decreasing(P<0.01).Conclusions:The urinary iodine level in 8 to 10 years old school-age children decreases after edible salt iodine decreasing,the urinary iodine median still exceeds normal,and the excessive iodine intake in children is found.Before and after edible salt iodine decreasing,the urinary iodine median in pregnant women is normal,and the insufficient iodine intake in pregnant women is found.