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2005•Hydrometallurgy of ChinaRequires access

Determination of Trace Amount Aluminum in Sodium Carbonate With DBC-arsenazo by Spectrophotometry

Qing-Zhou Zhai

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Abstract

In a HAc-NaAc buffer solution at pH 4.5,aluminum(III) reacts with DBC-arsenazo to form a complex with mole ratio [n(Al~(3+)):n(R)] of 1 to 2.The maximum absorbption wavelength and(apparent) molar absorptivity of the complex are 622 nm and 4.89 10~(3) L/(mol·cm),respectively.(Beer's) law is obeyed in the range of 0 to 1.0 μg/mL of aluminum concentration.The method was used to determine trace amount of aluminum in sodium carbonate with satisfactory results.

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In a HAc-NaAc buffer solution at pH 4.5,aluminum(III) reacts with DBC-arsenazo to form a complex with mole ratio [n(Al~(3+)):n(R)] of 1 to 2.The maximum absorbption wavelength and(apparent) molar absorptivity of the complex are 622 nm and 4.89 10~(3) L/(mol·cm),respectively.(Beer's) law is obeyed in the range of 0 to 1.0 μg/mL of aluminum concentration.The method was used to determine trace amount of aluminum in sodium carbonate with satisfactory results.

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Available abstract

In a HAc-NaAc buffer solution at pH 4.5,aluminum(III) reacts with DBC-arsenazo to form a complex with mole ratio [n(Al~(3+)):n(R)] of 1 to 2.The maximum absorbption wavelength and(apparent) molar absorptivity of the complex are 622 nm and 4.89 10~(3) L/(mol·cm),respectively.(Beer's) law is obeyed in the range of 0 to 1.0 μg/mL of aluminum concentration.The method was used to determine trace amount of aluminum in sodium carbonate with satisfactory results.

Key concepts: Molar absorptivity, Chemistry, Spectrophotometry, Sodium carbonate, Buffer solution, dBc, Aluminium, Nuclear chemistry

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