Spectrophotometric determination of palladium after solid-liquid extraction with 1-(2-pyridylazo)-2-naphthol at 90°C

Jinzhang Gao; Bo Peng; Haiyan Fan; Jingwan Kang; Xudong Wang

doi:10.1016/S0039-9140(96)02122-4

Spectrophotometric determination of palladium after solid-liquid extraction with 1-(2-pyridylazo)-2-naphthol at 90°C

Jinzhang Gao, Bo Peng, Haiyan Fan, Jingwan Kang, Xudong Wang

Department of Chemistry

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

40 Citations (Scopus)

Abstract

An effective spectrophotometric determination of palladium with 1-(2-pyridylazo)-2-naphthol (PAN) using molten naphthalene as a diluent has been studied. A green complex of palladium with PAN is formed at 90°C. In the range of pH 1.5-7.5, the complex is quantitatively extracted into molten naphthalene. The organic phase is anhydrously dissolved in CHCl₃ to be determined spectrophotometrically at 678 nm against the reagent blank. Beer's law is obeyed over the concentration range of 0.5-10 ppm. The molar absorptivity and Sandell's sensitivity are 1.2 x 10⁴ l mol^-1 cm^-1 and 0.0070 mg cm^-2, respectively. The optimum conditions for determination are obtained. The interferences of various ions are observed in detail. The method has been applied to the determination of palladium in synthetic samples.

Original language	English
Pages (from-to)	837-842
Number of pages	6
Journal	Talanta
Volume	44
Issue number	5
DOIs	https://doi.org/10.1016/S0039-9140(96)02122-4
Publication status	Published - May 1997

Keywords

Molten naphthalene
Palladium
Spectrophotometric

ASJC Scopus subject areas

Analytical Chemistry

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title = "Spectrophotometric determination of palladium after solid-liquid extraction with 1-(2-pyridylazo)-2-naphthol at 90°C",

abstract = "An effective spectrophotometric determination of palladium with 1-(2-pyridylazo)-2-naphthol (PAN) using molten naphthalene as a diluent has been studied. A green complex of palladium with PAN is formed at 90°C. In the range of pH 1.5-7.5, the complex is quantitatively extracted into molten naphthalene. The organic phase is anhydrously dissolved in CHCl3 to be determined spectrophotometrically at 678 nm against the reagent blank. Beer's law is obeyed over the concentration range of 0.5-10 ppm. The molar absorptivity and Sandell's sensitivity are 1.2 x 104 l mol-1 cm-1 and 0.0070 mg cm-2, respectively. The optimum conditions for determination are obtained. The interferences of various ions are observed in detail. The method has been applied to the determination of palladium in synthetic samples.",

keywords = "Molten naphthalene, Palladium, Spectrophotometric",

author = "Jinzhang Gao and Bo Peng and Haiyan Fan and Jingwan Kang and Xudong Wang",

year = "1997",

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T1 - Spectrophotometric determination of palladium after solid-liquid extraction with 1-(2-pyridylazo)-2-naphthol at 90°C

AU - Gao, Jinzhang

AU - Peng, Bo

AU - Fan, Haiyan

AU - Kang, Jingwan

AU - Wang, Xudong

PY - 1997/5

Y1 - 1997/5

N2 - An effective spectrophotometric determination of palladium with 1-(2-pyridylazo)-2-naphthol (PAN) using molten naphthalene as a diluent has been studied. A green complex of palladium with PAN is formed at 90°C. In the range of pH 1.5-7.5, the complex is quantitatively extracted into molten naphthalene. The organic phase is anhydrously dissolved in CHCl3 to be determined spectrophotometrically at 678 nm against the reagent blank. Beer's law is obeyed over the concentration range of 0.5-10 ppm. The molar absorptivity and Sandell's sensitivity are 1.2 x 104 l mol-1 cm-1 and 0.0070 mg cm-2, respectively. The optimum conditions for determination are obtained. The interferences of various ions are observed in detail. The method has been applied to the determination of palladium in synthetic samples.

AB - An effective spectrophotometric determination of palladium with 1-(2-pyridylazo)-2-naphthol (PAN) using molten naphthalene as a diluent has been studied. A green complex of palladium with PAN is formed at 90°C. In the range of pH 1.5-7.5, the complex is quantitatively extracted into molten naphthalene. The organic phase is anhydrously dissolved in CHCl3 to be determined spectrophotometrically at 678 nm against the reagent blank. Beer's law is obeyed over the concentration range of 0.5-10 ppm. The molar absorptivity and Sandell's sensitivity are 1.2 x 104 l mol-1 cm-1 and 0.0070 mg cm-2, respectively. The optimum conditions for determination are obtained. The interferences of various ions are observed in detail. The method has been applied to the determination of palladium in synthetic samples.

KW - Molten naphthalene

KW - Palladium

KW - Spectrophotometric

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