SPECTROPHOTOMETRIC DETERMINATION OF CE(IV) USING O-PHENYLENEDIAMINE IN STEELS

Authors
AGRAWAL A SEKHAR KC PANDEY LP
Citation
A. Agrawal et al., SPECTROPHOTOMETRIC DETERMINATION OF CE(IV) USING O-PHENYLENEDIAMINE IN STEELS, Bulletin of Materials Science, 17(7), 1994, pp. 1467-1471
Citations number
28
Categorie Soggetti
Material Science
Journal title
Bulletin of Materials Science → ACNP
ISSN journal
02504707
Volume
17
Issue
7
Year of publication
1994
Pages
1467 - 1471
Database
ISI
SICI code
0250-4707(1994)17:7<1467:SDOCUO>2.0.ZU;2-N
Abstract
A simple and sensitive spectrophotometric method for the determination of cerium(IV) was developed. With o-phenylenediamine cerium(IV) gives an orange-red colour with an absorption maximum at 470 nm. The system obeys Beer's law in the range 7 ppm to 500 ppm with a molar absorptiv ity of 2.4 x 10(3) l mol(-1) cm(-1) and Sandell sensitivity of 0.5 ppm . Interference by various ions was studied. This method was used for t he determination of cerium in low-alloy steels and the results are in good agreement with the certified values.