title: Spectrophotometric studies on the investigation of chromium in environmental samples.
abstract: Isothipendyl hydrochloride is proposed as a sensitive and selective reagent for the rapid spectrophotometric determination of chromium(VI). The reagent instantaneously gives a red coloured species on reaction with chromium(VI) in phosphoric acid medium which exhibits maximum absorbance at 510 nm with Sandell's sensitivity of 2.28 ng cm(-2). Beer's law is valid over the concentraction range of 0.1-1.9 mg/l with an optimum concentration range of 0.2-1.7 mg/l. The method has been successfully applied to the analysis of chromium in environmental samples.
authors.affiliation: Department of Chemistry, Karnatak University, Dharwad 580 003, India.
authors.forename: M B
authors.initials: MB
authors.lastname: Melwanki
authors.forename: Jaldappa
authors.initials: J
authors.lastname: Seetharamappa
mesh_terms: D002274:Carcinogens, Environmental / Q000032:analysis*; D002857:Chromium / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods*; D012680:Sensitivity and Specificity; D013053:Spectrophotometry / Q000379:methods; D013843:Thiazines / Q000737:chemistry
chemical_list: D002274:Carcinogens, Environmental; D013843:Thiazines; D002857:Chromium; C074702:chromium hexavalent ion; C008214:isothipendyl