Abstract:

【Abstract】 Objective  To investigate the current iodine nutritional status in population in Wuhu City after practice of the new iodized salt concentration standard for scientific basis to accurately rectify the iodine supplementation in table salt. Methods  Iodine nutrition status and dietary intake of salt were surveyed in children and pregnant women as well as civilians in 8 counties/districts in Wuhu City from 2011 to 2014. The salt iodine concentration was measured by direct titration technique, and the chuan salt and other fortified salt were tested by the method of arbitration (GB/T 13025.7-1999). Urinary iodine was determined with arsenic-cerium catalytic spectrophotometry (WS/T 107-2006). Results  A total of 1968, 2280, 2340 and 2280 samples were respectively collected from 2011 to 2014, and corresponding median of salt iodine was 30.85mg/kg, 26.79mg/kg, 24.2mg/kg and 23.3mg/kg. The median of urinary iodine was 283.33μg/L，269.02μg/L，240.23μg/L and 207.54μg/L, respectively for children aged between 8 and 10 years, and 208.8μg/L, 193.02μg/L and 63.6μg/L for pregnant women during 2012 and 2014. Conclusion  The new standard of iodized salt concentration may satisfy the essential iodine nutrition for children aged 8~10 years, yet iodine deficiency may be present in pregnant women, who are required to give health education to raise their awareness of individual iodine supplement.

Key words: Iodized salt, Adjustment, Iodine nutrition