2002•INDIAN JOURNAL OF CHEMISTRY- SECTION ARequires access

Spectrophotometric determination of thorium(IV) using 3-hydroxy-2-(2'-thienyl)-4 H -chromen-4-one

Amita Garg, Lajpat Rai Kakkar

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Abstract

A spectrophotometric method has been developed to determine thorium using 3-hydroxy-2-(2'-thienyl)-4H-chromen-4-one (HTC) which forms a 1:4 yellow complex in dilute acetic acid solution with λ m a x at 430 nm. The method is free from the interference of a large number of metal ions of interest. Molar absorptivity and Sandell's sensitivity of the complex are 3.95×10 4 L mol - 1 cm - 1 and 0.0059 μg cm - 2 , respectively.

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A spectrophotometric method has been developed to determine thorium using 3-hydroxy-2-(2'-thienyl)-4H-chromen-4-one (HTC) which forms a 1:4 yellow complex in dilute acetic acid solution with λ m a x at 430 nm. The method is free from the interference of a large number of metal ions of interest. Molar absorptivity and Sandell's sensitivity of the complex are 3.95×10 4 L mol - 1 cm - 1 and 0.0059 μg cm - 2 , respectively.

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Available abstract

A spectrophotometric method has been developed to determine thorium using 3-hydroxy-2-(2'-thienyl)-4H-chromen-4-one (HTC) which forms a 1:4 yellow complex in dilute acetic acid solution with λ m a x at 430 nm. The method is free from the interference of a large number of metal ions of interest. Molar absorptivity and Sandell's sensitivity of the complex are 3.95×10 4 L mol - 1 cm - 1 and 0.0059 μg cm - 2 , respectively.

Key concepts: Molar absorptivity, Thorium, Acetic acid, Chemistry, Metal ions in aqueous solution, Nuclear chemistry, Metal, Ion

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