Analysis of iodine content in table salt in Jilin province

ObjectiveTo determine and analyze the status of iodine content in table salt available from markets in Jilin province,and to provide bases for prevention and treatment of iodine deficiency disorders.MethodsTable salt samples were collected from households in nine cities of Jilin province using stratified cluster random sampling method and iodine content in the samples were measured according to GB/T 13025.7-1999;and the coverage rate,qualified rate,non-iodized salt rate,and edible rate of qualified iodized salt were calculdted.In addition,the iodine content of the salt was compared and analyzed between the two years.ResultsAmong 17 400 salt samples obtained in 2008,17 284 were qualified and the edible rate of qualified iodized salt was 99.3%.Ten samples were non-iodized and the non-iodized salt rate was 0.05%.Among 17 783 salt samples obtained in 2012,17 612 were qualified and the edible rate of the qualified iodized salt was 99.07%.Five samples were non-iodized and the rate of non-iodized salt was 0.03 %.Iodine content of table salt in 2012 was lower than that in 2008,with a statistically significant difference(P<0.05).ConclusionThe edible rate of the qualified iodized salt in Jilin province met the national standards in 2008 and 2012.Strengthening management and monitoring can guarantee the supply of qualified iodized salt.