Analytical application of p-sulfonamidophenylazo-bis-acetoxime in the spectrophotometric determination of iron(III)

Department of Chemistry, M. L. Sukhadia University, Udaipur-313 00 I, India
E-mail : akumargoswami@rediffmail.com
Manuscript received 8 April 2002, revised II February 2003, accepted 4 March 2003

p-Sulfonamidophenylazobisacetoxime has been used for spectrophotometric determination of iron(III) at 405 nm, keeping the pH at 2.5-3.0. Beer's law is obeyed in the range (4 to 24) x 10^-5 M. The molar absorptivity and Sandell's sensitivity values are 1853 dm³ mol^-1 cm^-1 and 30.14 ng cm^-2, respectively.