Page 45 - Statistics presented by Dr. Sara Ismail Aborass
P. 45

9/8/2023

                DETERMINATION :
               "Diazotizaiton & Coupling" [Griess-Illosvay method]
               -The nitrite of the test solution is converted to nitrous acid
               - Diazonium salt formation with aromatic amine

                 (sulphanilic acid)
               - Coupling with α –naphthyl amine to produce a reddish –

                 purple azodye.The colored products are measured at the
                 corresponding λmax or by Nesslerization comparison
                 technique.

87

                                                                             :

88

                                                                                44
   40   41   42   43   44   45   46   47   48   49   50