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New Method of Synthesis of Calix-4-arenes as Analytical Reagent for Spectrophotometric Determination of Iron (III) | ||
| Al-Mustansiriyah Journal for Pharmaceutical Sciences | ||
| Article 1, Volume 10, Issue 2, 2011, Pages 19-33 | ||
| Authors | ||
| Alaa F. Hussain; Ashour H. Dawood; Ahmed Fadhil Kadhier | ||
| Abstract | ||
| A compound of Calix-4-arenes was prepared, as a sensitive and selective spectrophotometric method was proposed for the rapid determination of Iron (III) in analytical sample, the proposed method was based on the formation blue complex with Calix-4-arenes as a chromogenic reagent that has a highly absorption at λmax 592 nm. The reaction was instantaneous at pH=7.0, the absorbance of complex was stable for about 24hr. Linearity was observed from 1.18 -8.0 μg.ml-1 with detection limit of 0.75μg.ml-1. Recovery and relative error values of precision and accuracy of method were found to be R.S.D.% = 0.92%, Re% = 99.45% and Erel = 0.55 % . The nature of complex showed that (Metal : Ligand) ratio was 1:1 at pH=7and the stability constant of ( 0.422x1010 L1.mole-1). The influence of chemical iand physical parameter and are evaluated . The proposed method was applied successfully to determine Fe (III) in analytical sample. | ||
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