Separation and preconcentration of trace vanadium in aqueous solution using trioctylmethylammonium chloride-loaded silica gel

摘要

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 10ml min~-1.