2. Preparation of standard solutions
2.1 Preparation Stock solution of acid 3-hydroxy-2-naphthalene carboxylic Malik 0.002 M concentration adjusted to 250 ml with methanol
2.2 Preparation Stock. The concentration of 0.003 M solution of aluminum from aluminum complex compounds (III) Nitrate's not hydrate by reacting with acid. 3-hydroxy-2-naphthalene carboxylic Malik 0.0001 M concentration using DI water and 50% methanol as solvent
2.3. PH with the highest value in the range of 4.50 ± 0.05, with λ excitation 366 nm and emission 460 nm used for measuring the amount of sample to
standardized aluminum 2.4
2.4.1. Pipette aluminum from Stock solution 5.00 mL volumetric flask into a 10.00 mL to adjust the pH in the range of 4.50 ± 0.05, using 0.1 M acetic / acetate buffer, 1 mL
of 0.0004 M 2.4.2 added. Acid 3-hydroxy-2-naphthalene carboxylic Malik 1 mL volumetric flask with DI water until water marks. Shake for 10 minutes to ensure that the complex
2.4.3. To measure light intensity by fluoro meter λ excitation 366 nm and emission 460 nm.
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