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2014•Chemical Science TransactionsOpen access

Spectrophotometric Determination of Nickel with Chlorophosphonazo-III

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Abstract

The optimum conditions for spectrophotometric method for the determination of Ni 2+ with chlorophosphonazo-III (CPA-III) were established and the nickel content in water samples has been successfully determined.In a pH 5.5 acetic acid-sodium acetate buffer medium, CPA-III and Ni 2+ formed a 1:3 green blue complex and the maximum absorption wavelength of the complex is at 620 nm.Ni 2+ content in a range of 0.1~3.5 μg/mL and absorbance shows a good linear relationship.The apparent molar absorption coefficient of method is ε 620nm = 1.40×10 4 L mol -1 cm -1 and the detection limit is 0.075 μg/mL.

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The optimum conditions for spectrophotometric method for the determination of Ni 2+ with chlorophosphonazo-III (CPA-III) were established and the nickel content in water samples has been successfully determined.In a pH 5.5 acetic acid-sodium acetate buffer medium, CPA-III and Ni 2+ formed a 1:3 green blue complex and the maximum absorption wavelength of the complex is at 620 nm.Ni 2+ content in a range of 0.1~3.5 μg/mL and absorbance shows a good linear relationship.The apparent molar absorption coefficient of method is ε 620nm = 1.40×10 4 L mol -1 cm -1 and the detection limit is 0.075 μg/mL.

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Available abstract

The optimum conditions for spectrophotometric method for the determination of Ni 2+ with chlorophosphonazo-III (CPA-III) were established and the nickel content in water samples has been successfully determined.In a pH 5.5 acetic acid-sodium acetate buffer medium, CPA-III and Ni 2+ formed a 1:3 green blue complex and the maximum absorption wavelength of the complex is at 620 nm.Ni 2+ content in a range of 0.1~3.5 μg/mL and absorbance shows a good linear relationship.The apparent molar absorption coefficient of method is ε 620nm = 1.40×10 4 L mol -1 cm -1 and the detection limit is 0.075 μg/mL.

Key concepts: Chemistry, Nickel, Spectrophotometry, Chromatography, Organic chemistry

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