SPECTROPHOTOMETRIC METHOD DEVELOPMENT FOR DETERMINING IRON(III) IN ENVIRONMENTAL SAMPLES USING 2-FUROHYDROXAMIC ACID (2-FHAP.K. Pandey , R. Trivedi and M. Pandey
A new simple and selective spectrophotometric method for the determination of Fe(III) in various environmental samples like soil, biomass, particulates (SPM, RSPM) based on the formation of Fe(III)-2-FHA complex in aqueous medium has been established. A reddish brown complex show intense colour pH 5.0 - 5.5 at λmax 480 nm. The tolerance limit of diverse ions examined is very high. The molar absorptivity and Sandells senstivity of the method with 2-FHA are 3.58x103 liter/mol/cm and 0.109 µg/cm2 respectively. The relative standard deviation of the method is 0.01419 for the determination of 5µg/25ml of Fe(III).
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