Shiller, Alan M., Lunjin Mao, and Jeramé Cramer
Limnol. Oceangr. 43:526-529
A flow injection technique for the determination of dissolved vanadium in natural waters has been developed. The technique utilizes the vanadium-catalyzed oxidation of Bindschedler’s green leuco base by bromate with tiron and tartrate as reaction activators. The reaction product is quantified calorimetrically. A chelator column of immobilized 8-hydroxyquinoline reduces matrix effects but can be eliminated if samples with a constant matrix are being analyzed. By using the chelator column, 1 ml of sample can be analyzed in < 10 min with a detection limit of 0.2 nM. The method has been used successfully for the determination of dissolved vanadium in river and estuarine waters.