Article ID Journal Published Year Pages File Type
1243419 Talanta 2015 7 Pages PDF
Abstract

•Simple SIA procedure for determination of Al(III) with cinnamoyl derivative.•Visual detection of Al(III) is also possible.•Suggested methods were applied for analysis of water samples and pharmaceuticals.•Cinnamoyl derivative (3–[4–(dimethylamino)cinnamoyl]–4–hydroxy–6–methyl–3,4–2H–pyran–2–one) was used as ligand.

A cinnamoyl derivative, 3–[4–(dimethylamino)cinnamoyl]–4–hydroxy–6–methyl–3,4–2H–pyran–2–one, was used as a ligand for the determination of aluminium. Upon the addition of an acetonitrile solution of the ligand to an aqueous solution containing Al(III) and a buffer solution at pH 8, a marked change in colour from yellow to orange is observed. The colour intensity is proportional to the concentration of Al(III); thus, the ‘naked–eye’ detection of aluminium is possible. The reaction is also applied for sequential injection determination of aluminium. Beer׳s law is obeyed in the range from 0.055 to 0.66 mg L−1 of Al(III). The limit of detection, calculated as three times the standard deviation of the blank test (n=10), was found to be 4 μg L−1 for Al(III). The method was applied for the determination of aluminium in spiked water samples and pharmaceutical preparations.

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Physical Sciences and Engineering Chemistry Analytical Chemistry
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