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2007•Acta ArmamentariiRequires access

Spectrophotometric Determination of Aluminium in Chemical Reagents with DBC-chlorophosphonazo in the Presence of Sodium Dodecyl Sulfonate

Jingyu Gao

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Abstract

In an acetic acid-sodium acetate buffer solution of pH 4.3,aluminium(Ⅲ) reacts with DBC-chlorophosphonazo(DBC-CPA) in the presence of sodium dodecyl sulfonate(SDS) to form a violet-blue complex.The composition of the complex is Al(Ⅲ)∶(DBC-CPA)=1∶1.The maximum absorption of the complex exhibits that λ(max) is 622 nm and the molar absorptivity is 1.41×104 L·mol(1)·cm(-1).Beer law is obeyed over the range of 0.20-1.20 mg·L(1) for aluminium.The method was satisfactorily used in the determination of trace amounts of aluminium in sodium hydrogen carbonate and sodium hydroxide.

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What this paper is about

In an acetic acid-sodium acetate buffer solution of pH 4.3,aluminium(Ⅲ) reacts with DBC-chlorophosphonazo(DBC-CPA) in the presence of sodium dodecyl sulfonate(SDS) to form a violet-blue complex.The composition of the complex is Al(Ⅲ)∶(DBC-CPA)=1∶1.The maximum absorption of the complex exhibits that λ(max) is 622 nm and the molar absorptivity is 1.41×104 L·mol(1)·cm(-1).Beer law is obeyed over the range of 0.20-1.20 mg·L(1) for aluminium.The method was satisfactorily used in the determination of trace amounts of aluminium in sodium hydrogen carbonate and sodium hydroxide.

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Available abstract

In an acetic acid-sodium acetate buffer solution of pH 4.3,aluminium(Ⅲ) reacts with DBC-chlorophosphonazo(DBC-CPA) in the presence of sodium dodecyl sulfonate(SDS) to form a violet-blue complex.The composition of the complex is Al(Ⅲ)∶(DBC-CPA)=1∶1.The maximum absorption of the complex exhibits that λ(max) is 622 nm and the molar absorptivity is 1.41×104 L·mol(1)·cm(-1).Beer law is obeyed over the range of 0.20-1.20 mg·L(1) for aluminium.The method was satisfactorily used in the determination of trace amounts of aluminium in sodium hydrogen carbonate and sodium hydroxide.

Key concepts: Chemistry, Sodium carbonate, Molar absorptivity, Sodium hydroxide, Reagent, Sodium, Inorganic chemistry, Buffer solution

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Spectrophotometric Determination of Aluminium in Chemical Reagents with DBC-chlorophosphonazo in the Presence of Sodium Dodecyl Sulfonate — Research Paper | ScholarLens