Optimation of Buffer Solution and K2C2O4 Reductor to Fe(II)-1,10-fenantrolin Determination using Spectrophotometric UV-Vis

Abstract

Iron was needed in the world to all components, so it was important to determine iron’s concentrate. This research determined buffer pH optimation and the consentration of K₂C₂O₄ reductor. Reduction of 5 ppm Fe³⁺ to Fe²⁺ have been investigated. The first experiment was determination of λ_maks and  than various pH and concentration of K₂C₂O₄ as reductor in order that determination of optimum condition. The result showed that λ_maks was 520 nm and pH 4,5 with 3 ppm of K₂C₂O₄ was effective to reduce 5 ppm of Fe³⁺ to Fe²⁺ in acid conditions forming [(Fe(C₁₂H₈N₂)₃]²⁺ complex by spectrophotometric UV-Visible. But in base solution, this complex was not formed. Both acid and base conditions were effective and accurate, case of value of RSD under 20 ppt and CV under 2%. This indicator showed  that this method was good.