Results The results showed that the rates of iodized salt at household levels were 49.2% in 1995,84.0% in 1997,87.1% in 1999 and 93.0% in 2002,with the median of iodized salt content was 0,23.3,28.6 and 29.0(mg/kg),correspondingly.
Results The median of iodized salt in household consuming was 34.9 mg/kg, the rate of qualified iodized salt was 87.2%, variation coefficient of iodized salt was 26.8%, the proportion of high concentrate iodine salt (> 60 mg/kg or >50 mg/kg) was significantly lower than the third surveillance.
Results The means and the standard deviations of iodine salt which from processing plants,sales departments and households of 4 IDD areas were 49.38±10.63mg/kg, 40.80±14.01mg/kg and 34.51±14.91mg/kg respectively.
It will be helpful for us to judge whether this area is insufficient in iodine and universal iodized salt is necessary or not.
The data reflected that water and soil iodine in foreland area was not high, which suggests universal iodized salt should be necessary.
Iodine concentration in canteen meals prepared with or without iodized salt
In each of two university canteens differing in the use (canteen A) or non-use (canteen B) of iodized salt for food preparation, 15 mostly equal lunch meals were collected for iodide and NaCl analysis.
Consequently, the use of iodized salt in central catering seems to play a more important role in a sufficient I intake than assumed so far.