塩化トリオクチルメチルアンモニウムを担持したシリカゲルを用いる水中のバナジウムの濃縮

概要

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The separation and preconcentration of trace vanadium from an aqueous solution for a graphite furnace atomic-absorption spectrometric (GF-AAS) determination was studied using silica gel loaded with trioctylmethylammonium cloride (Capriquat). A sample solution containing V was adjusted to pH 6.0. The solution was then passed through 1.0 g of Capriquat loaded in a silica gel column at a flow rate of 10 ml min ^<-1>. The V collected on the Capriquat-loaded silica gel on the column was eluted with 10 ml of 0.5 M perchloric acid, and then determined by GF-AAS. In this method, over 99% of the V was adsorbed at about pH 6.0. The calibration curve was linear from 0.05 to 2.5 μg/l of V. The proposed method has been applied to the determination of V in river water and seawater samples.
社団法人日本分析化学会の論文
1997-11-05