Author(s): Rehana Khanam1*, Saba Khan1, Rekha Dashora2, RS Chauhan2andAK Goswami2
3-Hydroxy-3-isopropyl-1-(4-sulphonamidophenyl)triazene has been used for spectrophotometric determination of Nickel(II) at 395 nm. The pH range was observed between 6.7 to 7.3. The Beer’s law is obeyed in the range 1x10-5to6x 10-5M. The molar absorptivity and Sandell’s sensitivity values are 7076 dm3mol-1cm-1and 8.29 ng cm-2, respectively. The Nickel (II) has been determined successfully even in presence of upto 100 ppm of various interfering cations and anions. The reagent forms complex with iron at ratio of 1:2. The composition of complex was determined by Job’s method and Mole ratio method of Yoe and Jones. The value of log β found from two different methods were 9.46and 9.43 respectively.