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Title: Spectrophotometric determination of thorium(IV) using 3-hydroxy-2-(2'-thienyl)-4H-chromen-4-one
Authors: Garg, Amita
Kakkar, L R
Issue Date: Sep-2002
Publisher: NISCAIR-CSIR, India
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 λmax at 430 nm. The method is free from the interference of a large number of metal ions of interest. Molar absorpti vity and Sandell's sensitivity of the complex are 3.95×104 L mol-1 cm-1 and 0.0059 μg cm-2 respectively.
Page(s): 1874-1876
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.41A(09) [September 2002]

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