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Title: Direct and derivative spectrophotometric determination of zirconium(IV) with 2,4-dihydroxy benzaldehyde isonicotinoyl hydrazone
Authors: Sivaramaiah, S
Reddy, P Raveendra
Reddy, V Krishna
Reddy, T Sreenivasulu
Issue Date: Jan-2003
Publisher: NISCAIR-CSIR, India
Abstract: A simple and sensitive spectrophotometric method has been developed for the determination of zirconium(IV) in aqueous medium. The metal ion forms golden yellow coloured, soluble complex with 2,4-dihydroxy benzaldehyde isonicotinoyl hydrazone (2,4-DHBINH) at pH 1.5 with λmax at 410 nm. Beer's law is obeyed in the range 0.40-4.00 μg ml-1 of Zr(IV). The molar absorptivity and the Sandell's sensitivity of the method are 1.82×104 lit mol-l cm-1 and 0.005 μg cm-2, respectively. The interference of various ions has been studied. The complex has a 1:2 [Zr(IV):2,4-DHBINH] stoichiometry. A method for the determination of zirconium(IV) by first order derivative spectrophotometry has also been proposed.
Page(s): 109-111
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.42A(01) [January 2003]

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