Dapsone a new diazotizing reagent for the spectrophotometric determination of nitrite in waste and natural water samples.
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.
Nagaraja
Padmarajaiah
P
Department of Chemistry, University of Mysore, Manasagangothri, Mysore-570006. nagarajap@mailcity.com
Hemantha Kumar
Mattighatta Shivaswamy
MS
Mallikarjuna
Nadagouda N
NN
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
D000890:Anti-Infective Agents; D003979:Diazonium Compounds; D009573:Nitrites; D014873:Water Pollutants; D003622:Dapsone