灰化法の違いによるL-チロキシンナトリウム中のヨウ素の回収率 Recovery of Iodine from L-Sodium Thyroxinate by Different Ashing Methods
The recoveries of iodine in L-Na-thyroxinate were determined by an ashing method at 200-550°C, using three kinds of crucibles. Also the effect of the aqueous extract of "Kombu" <i>Laminaria japonica</i> and the artificial "Kombu" extracts on the recovery of iodine were estimated.<br>The highest value of recovery of iodine was obtained by ashing used in a platinum crucible with alkali at 400°C.<br>Except ashing at 400°C, increasing of ashing time showed a decrease of recoveries. When "Kombu" extract was added to the sample, the recovery of iodine increased remarkably.<br>It will the effect of the mixture of Ca-alginate, mannite and several inorganic element cortained in the aqueous "Kombu" extract.
日本水産学会誌 62(6), 928-933, 1996-11-15