Spectrophotometric determination of chromium(VI) in soil and steel samplesusing methdilazine hydrochloride

Authors
Melwanki, MB Seetharamappa, J
Citation
Mb. Melwanki et J. Seetharamappa, Spectrophotometric determination of chromium(VI) in soil and steel samplesusing methdilazine hydrochloride, I J CHEM A, 40(6), 2001, pp. 659-661
Citations number
10
Categorie Soggetti
Chemistry
Journal title
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY
ISSN journal
03764710 → ACNP
Volume
40
Issue
6
Year of publication
2001
Pages
659 - 661
Database
ISI
SICI code
0376-4710(200106)40:6<659:SDOCIS>2.0.ZU;2-5
Abstract
Methdilazine hydrochloride has been used as a sensitive and selective reage nt for the rapid spectrophotometric determination of chromium(VI). The reag ent gives a red coloured species instantaneously on reaction with chromium( VI) in phosphoric acid medium and exhibits maximum absorbance at 512 nm wit h Sandell's sensitivity of 3.1 ng cm(-2). Beer's law is obeyed over the con centration range of 0.1-1.8 ppm; the optimum concentration range is 0.2-1.6 ppm. The method has been successfully applied to the analysis of chromium( VI) in steels and soil samples.