Dapsone and iminodibenzyl as novel reagents for the spectrophotometric determination of trace amounts of nitrite in water samples.
A rapid, simple, sensitive and selective spectrophotometric determination of nitrite using new diazotizing and coupling reagents is described. The method is based on a diazotization-coupling reaction between dapsone and iminodibenzyl in a hydrochloric acid medium. The molar absorptivity and Sandell's sensitivity were found to be 7.5 x 10(4) l mol(-1) cm(-1) and 0.000613 microg ml(-1), respectively. The interference effects of various cations and anions were also studied and reported. This method has been found to be applicable for the determination of nitrite in various water samples.
Nagaraja
P
P
Department of Chemistry, University of Mysore, Manasagangothri, India. nagarajap@mailcity.com
Kumar
M S
MS
Rangappa
K S
KS
D000042:Absorption; D001596:Benzylamines / Q000737:chemistry* / Q000493:pharmacokinetics; D002412:Cations / Q000737:chemistry; D003116:Color; D003622:Dapsone / Q000737:chemistry* / Q000494:pharmacology; D007202:Indicators and Reagents / Q000737:chemistry* / Q000493:pharmacokinetics; D007477:Ions / Q000737:chemistry; D009573:Nitrites / Q000737:chemistry*; D013053:Spectrophotometry / Q000379:methods*; D014867:Water / Q000737:chemistry*
D001596:Benzylamines; D002412:Cations; D007202:Indicators and Reagents; D007477:Ions; D009573:Nitrites; D014867:Water; C005051:dibenzylamine; D003622:Dapsone