title: Visual detection and sequential injection determination of aluminium using a cinnamoyl derivative.
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. 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.
authors.affiliation: Department of Analytical Chemistry, P.J. Šafárik University, SK-04154 Košice, Slovak Republic. Electronic address: lenka.eleckova@gmail.com.
authors.forename: Lenka
authors.initials: L
authors.lastname: Elečková
authors.affiliation: Department of Analytical Chemistry, P.J. Šafárik University, SK-04154 Košice, Slovak Republic.
authors.forename: Michal
authors.initials: M
authors.lastname: Alexovič
authors.affiliation: Department of Inorganic Chemistry, P.J. Šafárik University, SK-04154 Košice, Slovak Republic.
authors.forename: Juraj
authors.initials: J
authors.lastname: Kuchár
authors.affiliation: Department of Chemistry, College of Nyíregyháza, HU-4400 Nyíregyháza, Hungary.
authors.forename: Ioseph S
authors.initials: IS
authors.lastname: Balogh
authors.affiliation: Department of Analytical Chemistry, P.J. Šafárik University, SK-04154 Košice, Slovak Republic.
authors.forename: Vasil
authors.initials: V
authors.lastname: Andruch
mesh_terms: D000535:Aluminum / Q000032:analysis*; D002934:Cinnamates / Q000737:chemistry*; D003124:Colorimetry / Q000295:instrumentation; D004867:Equipment Design; D017022:Flow Injection Analysis / Q000295:instrumentation; D057230:Limit of Detection; D004364:Pharmaceutical Preparations / Q000032:analysis*; D013053:Spectrophotometry / Q000295:instrumentation; D014867:Water / Q000032:analysis*
chemical_list: D002934:Cinnamates; D004364:Pharmaceutical Preparations; D014867:Water; D000535:Aluminum
keywords: Aluminium; Ligand; Sequential injection analysis; Visual detection