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The effect of HNO3, HCl and HBr on the fluorescence of the aluminium complex of l-(2-pyridylazo)-2-naphthol, and an improved fluorometric procedure for determination of aluminium

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Haddad, PR, Alexander, PW and Smythe, LE 1974 , 'The effect of HNO3, HCl and HBr on the fluorescence of the aluminium complex of l-(2-pyridylazo)-2-naphthol, and an improved fluorometric procedure for determination of aluminium' , Talanta, vol. 21, No. 2 , pp. 123-130 , doi: 10.1016/0039-9140(74)80034-2.

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Abstract

The fluorescence of the aluminium complex of 1-(2-pyridylazo)-2-naphthol (PAN) is both stabilized and enhanced by 10−3 M HNO3 . HCl or HBr. Other acids tested have no effect. An improved flourometric procedure with a detection limit of 0·001 ppm, increased precision and reduced interferences over the existing Al—PAN method is described. It is satisfactory for the determination of aluminium in bronze when an ion-exchange separation is used, but is not suitable for the determination of aluminium in plants. The acidified Al—PAN is unsuitable for the determination of nickel(II) and fluoride by fluorescence quenching.

Item Type: Article
Authors/Creators:Haddad, PR and Alexander, PW and Smythe, LE
Journal or Publication Title: Talanta
ISSN: 0039-9140
DOI / ID Number: 10.1016/0039-9140(74)80034-2
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