Simultaneous determination of trace amounts of vanadium and cobalt in steel and environmental materials with 2-(5-nitro-2-pyridylazo)-5 [N-n-propyl-N-(3-sulfopropyl)amino]phenol by reversed-phase high-performance liquid chromatography
B. Chen et al., Simultaneous determination of trace amounts of vanadium and cobalt in steel and environmental materials with 2-(5-nitro-2-pyridylazo)-5 [N-n-propyl-N-(3-sulfopropyl)amino]phenol by reversed-phase high-performance liquid chromatography, J CHROM SCI, 37(8), 1999, pp. 306-311