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Title

RANK ANNIHILATION FACTOR ANALYSIS FOR SPECTROPHOTOMETRIC DETERMINATION OF ACIDITY CONSTANTS A DIPROTIC ACID

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Abstract

 RANK ANNIHILATION FACTOR ANALYSIS (RAFA) IS AN EFFICIENT CHEMOMETRICS TECHNIQUE BASED ON RANK ANALYSIS FOR TWO-WAY SPECTRUM DATA AND CAN BE EMPLOYED TO QUANTITATIVELY ANALYZE THE GRAY SYSTEM WITH UNKNOWN BACKGROUND. IN THIS WORK, RANK ANNIHILATION FACTOR ANALYSIS METHOD WAS PROPOSED FOR DETERMINATION OF THE ACIDITY CONSTANTS OF DIPROTIC ACID OF 4- (2-THIAZOLYLAZO) -RESORCINOL (TAR). AFTER RECORDING THE ELECTRONIC ABSORBANCE SPECTRA OF THE ACIDS AT DIFFERENT PH, THE CONTRIBUTIONS OF BOTH H2A AND A2- WERE ANNIHILATED FROM THE ABSORBANCE DATA, WHICH MADE FEASIBLE THE DETERMINATION OF TWO SUCCESSIVE ACIDITY CONSTANTS. EXTRA TITRATION OF STANDARD AND AUGMENTATION WITH SAMPLE MATRIX AND ALSO THE MATRIX EFFECTS ARE AVOIDED IN THE PROPOSED METHOD. IN THIS ARTICLE, WE WILL SHOW THAT THE DETERMINATION OF THE SUCCESSIVE ACID DISSOCIATION CONSTANTS OF DIPROTIC ACIDS CAN BE FEASIBLE BY RAFA IF THE CONTRIBUTIONS OF BOTH ACIDIC AND BASIC FORMS ARE ANNIHILATED FROM THE ORIGINAL DATA [1-4].

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    APA: Copy

    BENVIDI, ALI, & JAHABANI, SHAHRIYAR. (2013). RANK ANNIHILATION FACTOR ANALYSIS FOR SPECTROPHOTOMETRIC DETERMINATION OF ACIDITY CONSTANTS A DIPROTIC ACID. IRANIAN CHEMISTRY CONGRESS. SID. https://sid.ir/paper/913778/en

    Vancouver: Copy

    BENVIDI ALI, JAHABANI SHAHRIYAR. RANK ANNIHILATION FACTOR ANALYSIS FOR SPECTROPHOTOMETRIC DETERMINATION OF ACIDITY CONSTANTS A DIPROTIC ACID. 2013. Available from: https://sid.ir/paper/913778/en

    IEEE: Copy

    ALI BENVIDI, and SHAHRIYAR JAHABANI, “RANK ANNIHILATION FACTOR ANALYSIS FOR SPECTROPHOTOMETRIC DETERMINATION OF ACIDITY CONSTANTS A DIPROTIC ACID,” presented at the IRANIAN CHEMISTRY CONGRESS. 2013, [Online]. Available: https://sid.ir/paper/913778/en

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