<報文>ショウ酸ビーズ法によるトリメチルアミン分析法の設定

概要

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The environmental amines have been analyzed by the following method. The collector tube is packed with the glass beads coating with a small amount of oxalic acid and glyeeline. The sample air is passed through the collector tube with a flow rate of 5l/min and the contained amines are collected perfectly by acid-base reaction on surface of the beads. Then the tube is connected to the decomposition equipment in which conc. KOH solution is added on the beads. The amines vaporized are send to GC sampling tube cooled with liquid oxygen using the pure nitrogen gas. GC-FID or GC-MS, fitting with chromosorb 104 column, are generally used. When air amount is 25l and detector is FID, the quantitative limit is the level of 1 ppb of each amine. In the case of measuring trimethylamine serectively, the single ion monitoring method of GC-MS is effectively applied, on which m/e is settled to 58. It was found in meny field application that either method is useful to the ordor control required.
横浜国立大学の論文