Investigation on iodine contents in salt on market and in household
Wang, Z.; Zhou, R.; Sun, M.
Wei Sheng Yan Jiu 27(6): 409-411
1998
ISSN/ISBN: 1000-8020 PMID: 11939032 Document Number: 486593
In order to supervise the iodine contents in salt on market and in household, a nationwide survey supported by ILSI was conducted. 91 salt samples on market and 531 samples in household were respectively collected from 35 manufactures in 11 selected provinces and from 165 districts in 25 provinces. The analytical method of determining the iodine in salt was based on Ce-As-I catalytic reaction. It was found that the iodine contents of the examined samples varied considerably and ranged from 3.0 to 100.3 mg/kg salt for market samples and 0.0 to 90.0 mg/kg for households samples. 71.4% and 73.4% samples reached the national standards respectively. 9.9% of market samples and 13.4% of the total 531 samples from households were lower than the national standard, while 18.7% and 13.2% of samples was higher. The percentage of coarse salt with low/no iodine content was 57.1%.