Flow injection electrogenerated chemiluminescence determination of vanadium and its application to environmental water sample

A selective flow injection electrogenerated chemiluminescence(CL) method for the determination of vanadium is described in this paper. It was based on the chemiluminescence reaction of luminol with vanadium(II), which was on-line electrogenerated from vanadate using a flow-through carbon electrolytic cell. Under the optimal conditions, the CL intensity was linear to the concentration of vanadium in the range of 5.0×10−10–1.0×10−7 g ml−1 with a detection limit of 2×10−10 g ml−1 vanadium. The relative standard deviation was 4% for 5.0×10−8 g ml−1 vanadium in 11 repeated measurements. The method has been successfully applied to the determination of vanadium in environmental water samples.