Flotation and spectrophotometric determination of silver with 4-(p-nitrophenylazo)-2-amino-3-pyridinol

P. Tarín; E. Figuerola; M. Blanco

doi:10.1007/BF01196691

Flotation and spectrophotometric determination of silver with 4-(p-nitrophenylazo)-2-amino-3-pyridinol

P. Tarín, E. Figuerola, M. Blanco

Department of Chemistry

Research output: Contribution to journal › Article › Research › peer-review

3 Citations (Scopus)

Abstract

A sensitive flotation-spectrophotometric method, based on the complex formed between Ag(I) and 4-(p-nitrophenylazo)-2-amino-3-pyridinol is described. The complex precipitates when the aqueous solution is shaken with benzene, and the solid formed is then dissolved in dimethylformamide. The molar absorptivity of the resulting solution is 10.7×104l·mole-1·cm-1 at 605 nm. Beer's law is obeyed between 0.08 and 1 ppm of silver. The molar ratio of Ag:reagent in the separated complex is 1:2. The effect of foreign ions has been determined and the proposed method can be applied to determination of silver in an exhausted photographic developing solution. © 1986 Springer-Verlag.

Original language	English
Pages (from-to)	97-104
Journal	Mikrochimica Acta
Volume	88
Issue number	1-2
DOIs	https://doi.org/10.1007/BF01196691
Publication status	Published - 1 Jan 1986

Keywords

4-(p-nitrophenyl-azo)-2-amino-3-pyridinol
flotation
silver
spectrophotometry

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10.1007/BF01196691

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title = "Flotation and spectrophotometric determination of silver with 4-(p-nitrophenylazo)-2-amino-3-pyridinol",

abstract = "A sensitive flotation-spectrophotometric method, based on the complex formed between Ag(I) and 4-(p-nitrophenylazo)-2-amino-3-pyridinol is described. The complex precipitates when the aqueous solution is shaken with benzene, and the solid formed is then dissolved in dimethylformamide. The molar absorptivity of the resulting solution is 10.7×104l·mole-1·cm-1 at 605 nm. Beer's law is obeyed between 0.08 and 1 ppm of silver. The molar ratio of Ag:reagent in the separated complex is 1:2. The effect of foreign ions has been determined and the proposed method can be applied to determination of silver in an exhausted photographic developing solution. {\textcopyright} 1986 Springer-Verlag.",

keywords = "4-(p-nitrophenyl-azo)-2-amino-3-pyridinol, flotation, silver, spectrophotometry",

author = "P. Tar{\'i}n and E. Figuerola and M. Blanco",

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doi = "10.1007/BF01196691",

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T1 - Flotation and spectrophotometric determination of silver with 4-(p-nitrophenylazo)-2-amino-3-pyridinol

AU - Tarín, P.

AU - Figuerola, E.

AU - Blanco, M.

PY - 1986/1/1

Y1 - 1986/1/1

N2 - A sensitive flotation-spectrophotometric method, based on the complex formed between Ag(I) and 4-(p-nitrophenylazo)-2-amino-3-pyridinol is described. The complex precipitates when the aqueous solution is shaken with benzene, and the solid formed is then dissolved in dimethylformamide. The molar absorptivity of the resulting solution is 10.7×104l·mole-1·cm-1 at 605 nm. Beer's law is obeyed between 0.08 and 1 ppm of silver. The molar ratio of Ag:reagent in the separated complex is 1:2. The effect of foreign ions has been determined and the proposed method can be applied to determination of silver in an exhausted photographic developing solution. © 1986 Springer-Verlag.

AB - A sensitive flotation-spectrophotometric method, based on the complex formed between Ag(I) and 4-(p-nitrophenylazo)-2-amino-3-pyridinol is described. The complex precipitates when the aqueous solution is shaken with benzene, and the solid formed is then dissolved in dimethylformamide. The molar absorptivity of the resulting solution is 10.7×104l·mole-1·cm-1 at 605 nm. Beer's law is obeyed between 0.08 and 1 ppm of silver. The molar ratio of Ag:reagent in the separated complex is 1:2. The effect of foreign ions has been determined and the proposed method can be applied to determination of silver in an exhausted photographic developing solution. © 1986 Springer-Verlag.

KW - 4-(p-nitrophenyl-azo)-2-amino-3-pyridinol

KW - flotation

KW - silver

KW - spectrophotometry

U2 - 10.1007/BF01196691

DO - 10.1007/BF01196691

M3 - Article

VL - 88

SP - 97

EP - 104

IS - 1-2

ER -