title: Dapsone a new diazotizing reagent for the spectrophotometric determination of nitrite in waste and natural water samples.
abstract: A new diazotizing reagent for the spectrophotometric determination of nitrite is described. The method is based on diazotization-coupling reaction between dapsone and phloroglucinol in hydrochloric acid medium. The reactions were conducted at room temperature, the molor absorptivity at 425 nm is 4.28 x 10(4) l mol-1cm-1 and was stable for 50 h. Beer's law was obeyed in the nitrite range of 0.008-1.0 microgram ml-1. Tolerance limits were tested for 33 species. The method has been found to be applicable for the determination of nitrite in natural and wastewater.
authors: Department of Chemistry, University of Mysore, Manasagangothri, Mysore-570006. nagarajap@mailcity.com
authors: Padmarajaiah
authors: P
authors: Nagaraja
authors: Mattighatta Shivaswamy
authors: MS
authors: Hemantha Kumar
authors: Nadagouda N
authors: NN
authors: Mallikarjuna
mesh_terms: D000890:Anti-Infective Agents / Q000737:chemistry*; D003622:Dapsone / Q000737:chemistry*; D003979:Diazonium Compounds / Q000737:chemistry*; D004784:Environmental Monitoring / Q000379:methods; D009573:Nitrites / Q000032:analysis*; D013053:Spectrophotometry / Q000379:methods; D014865:Waste Disposal, Fluid; D014873:Water Pollutants / Q000032:analysis*; D014881:Water Supply
chemical_list: D000890:Anti-Infective Agents; D003979:Diazonium Compounds; D009573:Nitrites; D014873:Water Pollutants; D003622:Dapsone