title: Direct and selective spectrophotometric method for the determination of vanadium in steel, environmental and biological samples.
abstract: A simple, direct and selective spectrophotometric method for determination of vanadium is described. The present methodology is based on the strong oxidizing power of vanadium (V). Vanadium (V) selectively oxidizes leucocrystal violet (LCV) to crystal violet in the presence of phosphoric acid. The violet colored dye obtained shows maximum absorbance at 590 nm. Beer's law is obeyed in the concentration range 0.06-0.6 μg ml(-1). The molar absorptivity and Sandell's sensitivity are found to be 6.78×10(4) l mol(-1) cm(-1) and 0.0044 μg cm(-2), respectively. The proposed method is simple, direct, and sensitive. It has been successfully applied for the determination of vanadium in various environmental, biological and steel samples.
authors.affiliation: Govt. V. Y. T. PG Autonomous College, Durg 491001, Chhattisgarh, India.
authors.forename: Sunitha B
authors.initials: SB
authors.lastname: Mathew
authors.forename: Girija
authors.initials: G
authors.lastname: Pataila
authors.forename: Ajai K
authors.initials: AK
authors.lastname: Pillai
authors.forename: V K
authors.initials: VK
authors.lastname: Gupta
mesh_terms: D001688:Biological Products / Q000737:chemistry*; D001774:Blood Chemical Analysis / Q000379:methods; D002624:Chemistry, Clinical / Q000379:methods; D004777:Environment; D004784:Environmental Monitoring / Q000379:methods; D004785:Environmental Pollutants / Q000032:analysis*; D006801:Humans; D018515:Plant Leaves / Q000737:chemistry; D045483:Rivers / Q000737:chemistry; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis; D013053:Spectrophotometry / Q000379:methods; D013232:Steel / Q000737:chemistry*; D014639:Vanadium / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D001688:Biological Products; D004785:Environmental Pollutants; D012987:Soil; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical; D014639:Vanadium; D013232:Steel