Analysis of iodine nutritional status of key population in Puhui Town, Korla Xinjiang / 中华地方病学杂志

ABSTRACT

Objective To investigate iodine nutritional status of key population in Puhui Town,Korla Xinjiang.Methods In 2018,totally 29 samples of factory water,peripheral water and self-prepared well water from centralized water supply in Puhui Town were collected,and urine samples,salt samples and blood samples were collected from 200 children aged 8 to 10 years old and 100 women of childbearing age (including pregnant women)in Puhui Town.Arsenic-cerium catalytic spectrophotometric method was used for determination of iodine in water and urine;the salt iodine was determined using direct titration and the thyroid was examined by ultrasound.The assessment was conducted according to the standard of "Delineation of Water-source Areas and Endemic Areas of High Iodine Goiter" (GB/T 19380-2016).Results In this survey,the median of water iodine in Puhui town (n =29)was 76.1 μg/L,and the median of salt iodine (n =175) was 27.76 mg/kg;the rate of iodized salt was 98.29％ (172/175);the consumption rate of qualified iodized salt was 96.00％ (168/175);the medians of urinary iodine of children aged 8 to 10 years old (n =208),women of childbearing age (n =73),and pregnant women (n =25) were 292.47,248.23,and 246.36 μg/L,respectively.The thyroid enlargement rate was 1.9％ (4/208) in children aged 8-10 years old,no swelling of women of childbearing age and pregnant women.Conclusions Iodine nutrition of pregnant women is in an appropriate state;both the children aged 8 to 10 years old and the women of childbearing aged are in excess of the appropriate level;goiter rate is lower in children.According to the national standards,Puhui Town does not belong to waterborne high iodine area.