Field Epidemiological Investigation
Iodine nutritional status of vulnerable people in Inner Mongolia after adjustment of iodized salt standard
Yuanyuan Zuo, Hongyu Guo, Jia'nan Qiao, Haicheng Jia, Jie Fan, Xiuling Yun, Yonghong Tian, Gaowa Yu, Chunlei Liu, Yajuan Xia
Published 2016-01-20
Cite as Chin J Endemiol, 2016, 35(1): 43-46. DOI: 10.3760/cma.j.issn.2095-4255.2016.01.011
Abstract
ObjectiveTo investigate the iodine nutrition level of vulnerable people in Inner Mongolia after adjustment of iodized salt standard and to provide theoretical bases for scientific iodine supplementation.
MethodsIn 2013, 3 cities were selected from eastern, central and western parts of Inner Mongolia in accordance with the random number table, 3 or 4 counties were selected from each target city, 5 units according to their sub-area position of east, south, west, north and center were selected from each county, and then 1 township was selected from each unit, 5 groups of target population including school children aged 8 -10, women of childbearing age, pregnant and lactating women and infants each at least 10 people were investigated in each township. Edible salt samples from their homes and urine samples were collected. The direct titration method among the generic methods of iodide testing for salt production industry (GB/T 13025.7-2012) was used to determine the salt iodine level, and As3+-Ce4+ catalytic spectrophotometry using ammonium per sulfate digestion (WS/T 107-2009) was used to test the urinary iodine level.
ResultsTotally 3 300 samples of edible salt from local residents had been examined and median iodine was 26.20 mg/kg. The median of urinary iodine was 190.6 μg/L of 1 289 school-age children; was 183.6 μg/L of 621 women of childbearing age; was 178.2 μg/L of 876 pregnant women; was 178.6 μg/L of 664 lactating women and was 167.7 μg/L of 599 infants.
ConclusionAfter adjustment of iodized salt standard, iodine nutrition level is suitable in all vulnerable people.
Key words:
Salts; Iodine; Urinary
Contributor Information
Yuanyuan Zuo
Iodine Deficiency Department, Inner Mongolia Center for Endemic Disease Control and Research, Hohhot 010031, China
Hongyu Guo
Iodine Deficiency Department, Inner Mongolia Center for Endemic Disease Control and Research, Hohhot 010031, China
Jia'nan Qiao
Iodine Deficiency Department, Inner Mongolia Center for Endemic Disease Control and Research, Hohhot 010031, China
Haicheng Jia
Iodine Deficiency Department, Inner Mongolia Center for Endemic Disease Control and Research, Hohhot 010031, China
Jie Fan
Iodine Deficiency Department, Inner Mongolia Center for Endemic Disease Control and Research, Hohhot 010031, China
Xiuling Yun
Hohhot Center for Endemic Disease Control and Research, Hohhot 010000, China
Yonghong Tian
Ulanqab Center for Endemic Disease Control, Ulanqab 012000, China
Gaowa Yu
Tongliao Station for Endemic Disease Control, Tongliao 028000, China
Chunlei Liu
Ulanqab Center for Endemic Disease Control, Ulanqab 012000, China
Yajuan Xia
Iodine Deficiency Department, Inner Mongolia Center for Endemic Disease Control and Research, Hohhot 010031, China