Visual detection and sequential injection determination of aluminium using a cinnamoyl derivative

Lenka Elečková, Michal Alexovič, Juraj Kuchár, Ioseph S. Balogh, Vasil Andruch

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13 Citations (Scopus)

Abstract

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. Beers 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.

Original languageEnglish
Pages (from-to)27-33
Number of pages7
JournalTalanta
Volume133
DOIs
Publication statusPublished - Feb 2015

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Keywords

  • Aluminium
  • Ligand
  • Sequential injection analysis
  • Visual detection

ASJC Scopus subject areas

  • Analytical Chemistry

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