Simultaneous spectrophotometric determination of Zinc(II) and Nickel(II) with 1-(2-pyridylazo)-2-naphthol

M. Blanco; J. Coello; H. Iturriaga; S. Maspoch; E. Bertran

doi:10.1007/BF01240371

Simultaneous spectrophotometric determination of Zinc(II) and Nickel(II) with 1-(2-pyridylazo)-2-naphthol

M. Blanco, J. Coello, H. Iturriaga, S. Maspoch, E. Bertran

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Abstract

A new procedure for the simultaneous spectrophotometric determination of Zn(II) and Ni(II) with 1-(2-pyridylazo)-2-naphthol as chromogenic reagent has been developed. It is based on resolution of the mixed spectrum over the wavelength range 530-590 nm by applying a least-squares fitting program to standard spectra from each component. The spectra are recorded at an apparent pH of 5.0, provided by an acetate buffer in a mixed 60:40 v/v 2-ethoxyethanol/water medium. The relative standard deviations for determination of 13.7 μg of Ni and 31.0 μg of Zn were 1.9 and 1.0%, respectively (8 replications). The method has been applied to the analysis of iron surfaces coated with a Zn-Ni alloy. The results are compared with those obtained by atomic-absorption spectrophotometry. © 1992 Springer-Verlag.

Original language	English
Pages (from-to)	53-59
Journal	Mikrochimica Acta
Volume	108
Issue number	1-2
DOIs	https://doi.org/10.1007/BF01240371
Publication status	Published - 1 Jan 1992

Keywords

multicomponent analysis
multiwavelength spectrophotometry
UV-Vis spectrophotometry
Zn-Ni determination

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10.1007/BF01240371

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title = "Simultaneous spectrophotometric determination of Zinc(II) and Nickel(II) with 1-(2-pyridylazo)-2-naphthol",

abstract = "A new procedure for the simultaneous spectrophotometric determination of Zn(II) and Ni(II) with 1-(2-pyridylazo)-2-naphthol as chromogenic reagent has been developed. It is based on resolution of the mixed spectrum over the wavelength range 530-590 nm by applying a least-squares fitting program to standard spectra from each component. The spectra are recorded at an apparent pH of 5.0, provided by an acetate buffer in a mixed 60:40 v/v 2-ethoxyethanol/water medium. The relative standard deviations for determination of 13.7 μg of Ni and 31.0 μg of Zn were 1.9 and 1.0%, respectively (8 replications). The method has been applied to the analysis of iron surfaces coated with a Zn-Ni alloy. The results are compared with those obtained by atomic-absorption spectrophotometry. {\textcopyright} 1992 Springer-Verlag.",

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author = "M. Blanco and J. Coello and H. Iturriaga and S. Maspoch and E. Bertran",

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T1 - Simultaneous spectrophotometric determination of Zinc(II) and Nickel(II) with 1-(2-pyridylazo)-2-naphthol

AU - Blanco, M.

AU - Coello, J.

AU - Iturriaga, H.

AU - Maspoch, S.

AU - Bertran, E.

PY - 1992/1/1

Y1 - 1992/1/1

N2 - A new procedure for the simultaneous spectrophotometric determination of Zn(II) and Ni(II) with 1-(2-pyridylazo)-2-naphthol as chromogenic reagent has been developed. It is based on resolution of the mixed spectrum over the wavelength range 530-590 nm by applying a least-squares fitting program to standard spectra from each component. The spectra are recorded at an apparent pH of 5.0, provided by an acetate buffer in a mixed 60:40 v/v 2-ethoxyethanol/water medium. The relative standard deviations for determination of 13.7 μg of Ni and 31.0 μg of Zn were 1.9 and 1.0%, respectively (8 replications). The method has been applied to the analysis of iron surfaces coated with a Zn-Ni alloy. The results are compared with those obtained by atomic-absorption spectrophotometry. © 1992 Springer-Verlag.

AB - A new procedure for the simultaneous spectrophotometric determination of Zn(II) and Ni(II) with 1-(2-pyridylazo)-2-naphthol as chromogenic reagent has been developed. It is based on resolution of the mixed spectrum over the wavelength range 530-590 nm by applying a least-squares fitting program to standard spectra from each component. The spectra are recorded at an apparent pH of 5.0, provided by an acetate buffer in a mixed 60:40 v/v 2-ethoxyethanol/water medium. The relative standard deviations for determination of 13.7 μg of Ni and 31.0 μg of Zn were 1.9 and 1.0%, respectively (8 replications). The method has been applied to the analysis of iron surfaces coated with a Zn-Ni alloy. The results are compared with those obtained by atomic-absorption spectrophotometry. © 1992 Springer-Verlag.

KW - multicomponent analysis

KW - multiwavelength spectrophotometry

KW - UV-Vis spectrophotometry

KW - Zn-Ni determination

U2 - 10.1007/BF01240371

DO - 10.1007/BF01240371

M3 - Article

VL - 108

SP - 53

EP - 59

IS - 1-2

ER -

Simultaneous spectrophotometric determination of Zinc(II) and Nickel(II) with 1-(2-pyridylazo)-2-naphthol

Abstract

Keywords

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