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Thiotropolone as a Chromogenic Reagent for the Microdetermination of Copper(II)
Author(s) -
Srivastava J. N.,
Singh R. P.
Publication year - 1974
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.197400037
Subject(s) - chemistry , chromogenic , reagent , molar absorptivity , copper , chloroform , absorption (acoustics) , nuclear chemistry , inorganic chemistry , chromatography , organic chemistry , optics , physics
Abstract Thiotropolone forms a brown water‐insoluble complex with copper(II), extracttable into chloroform and other non‐polar solvents. The 1:2 complex shows maximum absorption at 450 nm and obeys Beer's law upto 4.55 ppm . The sensitivity of the reaction is 0.0046 μg Cu(II)/ cm 2 for log I 0 / I =0.001 with molar absorptivity of 1.36×10 4 . The usefulness of the procedure has been enhanced to the determination of copper in various alloys and synthetic mixtures.