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

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 K 2 C 2 O 4 reductor. Reduction of 5 ppm Fe 3+ to Fe 2+ have been investigated. The first experiment was determination of λ maks and than various pH and concentration of K 2 C 2 O 4 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 K 2 C 2 O 4 was effective to reduce 5 ppm of Fe 3+ to Fe 2+ in acid conditions forming [(Fe(C 12 H 8 N 2 ) 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.