3.2. Iodine content
Table 2 shows iodine content in ten selected foods, which are
commonly consumed among Thai people, analysed by spectrophotometry
with external standard curve and with standard addition,
and by an ICP-MS method. ICP-MS was used as the reference
method in this study due to its superior sensitivity compared with
other techniques for iodine measurement. In addition, a very wide
linear dynamic range for iodine level by ICP-MS has been demonstrated.
It is fast, accurate, robust and a specific method for the
evaluation of iodine in biological samples.