エネルギー分散型蛍光X線分析法による昆布佃煮中ヨウ素の簡易定量分析法

抄録

We have established the quick and simplified assay method of iodine in cooked kombu using the technique of energy dispersive X-ray fluorescence spectrometry (EDXRF). We have examined the second target for iodine and the assay condition for the fundamental parameter (FP). We have decided to use Al₂O₃ as the second target for iodine, the cellulose as the balance ingredient, fixing water to 50%. Iodine contents of the commercial cooked kombu were assayed by this method. The iodine contents were 35-532μg/g, showing a good consistent with those done by the conventional gas liquid chromatographic method. This new method needs no pre-processing before the assay, making the assay operation simple and short-time. And many kind of elements can be measured at the same time. We hope this new method would be widely utilized in stead of the conventional gas liquid chromatographic method.