Data analysis of iodine level in iodized salt from monitoring sites in Qinghai province in 2010

Objective To analyze coverage rote and quality of edible salt in Qinghai province,and to provided scientific basis for the prevention of iodine deficiency disorders.Methods According to the sampling and detection methods in the National Iodine Deficiency Disorders Monitoring Program(Trial),37 counties(cities,districts) were randomly selected in 2010.Twenty percent of the 37 counties(cities,districts),that was 6 counties (cities) were selected as key sites for monitoring of iodized salt.Quantitative determination of salt iodine was done by direct titration method(GB/T 13025.7-1999) in random monitoring,and semi-quantitative assay was used to monitor salt iodine in key sampling.Results A total of 10999 edible salt samples were tested.Among them,10525 were qualified iodized salt,269 unqualified iodized salt,and 205 non-iodized salt.The coverage rate of iodized salt was 98.14％(10794/10999),the rate of qualified iodized salt was 97.51％(10525/10794),the rate of edible qualified iodized salt was 95.69％ (10525/10999),and the rate of non-iodized salt was 1.86％ (205/10999).In the 6 key monitoring counties,salt samples of 1800 were tested.Among them,1712 were qualified iodized salt,88 non-iodized salt,and the coverage rate of iodized salt was 95.11％(1712/1800),and the rate of non-iodized salt was 4.89％(88/1800).The rates of non-iodized salt in Geermu city,Wulan county,and Jiuzhi county were 10.00％ (30/300),6.33％(19/300),5.33％(16/300),respectively.Conclusions Despite remarkable progress has been made in control of iodine deficiency disorders in Qinghai province,there are still some problems in some areas.We should establish law enforcement agencies of iodized salt and perfect sales network,perfect iodized salt network management,and strengthening health education. Key words: Iodine;  Salts;  Data collection