SOLVENT-EXTRACTION AND SPECTROPHOTOMETRIC DETERMINATION OF TELLURIUM(IV) WITH PYRIMIDINETHIOL

Authors
MOTAGI AS KOLEKAR SS ANUSE MA
Citation
As. Motagi et al., SOLVENT-EXTRACTION AND SPECTROPHOTOMETRIC DETERMINATION OF TELLURIUM(IV) WITH PYRIMIDINETHIOL, Indian journal of chemistry. Sect. A: Inorganic, physical, theoretical & analytical, 36(12), 1997, pp. 1106-1108
Citations number
18
Journal title
Indian journal of chemistry. Sect. A: Inorganic, physical, theoretical & analytical
ISSN journal
03764710 → ACNP
Volume
36
Issue
12
Year of publication
1997
Pages
1106 - 1108
Database
ISI
SICI code
0376-4710(1997)36:12<1106:SASDOT>2.0.ZU;2-E
Abstract
A method is proposed for the solvent extraction and spectrophotometric determination of microgram levels of tellurium(IV) from hydrochloric acid media with 1-(2',3'-dichlorophenyl)-4,4,6- trimethyl-(1H,4H)pyrim idine-2-thiol (2',3'-dichloro PTPT) in chloroform. The yellow coloured complex absorbs maximally at 430 nm and the system obeys Beer's law i n the concentration range of 2.5 to 12.5 ppm. The molar absorptivity a nd Sandell's sensitivity are 7562 l mol(-1) cm(-1) and 17 ng cm(-2) re spectively. The probable composition of extracted species is TeL2. The method has been applied for the determination of tellurium (IV) in va rious synthetic samples.