NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.14 [2007] >
IJCT Vol.14(3) [May 2007] >


Title: Indirect complexometric determination of thallium(III) in its alloys and complexes using thiomalic acid as a selective releasing agent
Authors: Parameshwara, P
Karthikeyan, J
Shetty, A Nityananda
Shetty, Prakash
Keywords: Thallium(III)
Thiomalic acid
Masking agent
Complexometric titration
Issue Date: May-2007
Publisher: CSIR
IPC CodeC01G15/00, C01B6/06
Abstract: A simple and selective complexometric method for the determination of thallium in presence of other metal ions is proposed on the basis of selective masking ability of thiomalic acid towards thallium(III). Thallium present in a given sample solution is first complexed with a known excess of EDTA and the surplus EDTA is titrated with standard lead nitrate solution at pH 5-6, using xylenol orange as the indicator. A 0.6% aqueous solution of thiomalic acid is then added to displace EDTA from the Tl(III)-EDTA complex. The released EDTA is titrated with standard lead nitrate solution. Reproducible and accurate results are obtained for 3-92 mg of Tl(III) with relative error less than ± 0.17% and coefficient of variation not more than 0.36%. The interference of various ions is studied. This method is used for the analysis of thallium in its synthetic alloy mixtures and also in complexes.
Page(s): 308-312
ISSN: 0971–457X
Source:IJCT Vol.14(3) [May 2007]

Files in This Item:

File Description SizeFormat
IJCT 14(3) (2007) 308-312.pdf61.33 kBAdobe PDFView/Open
 Current Page Visits: 588 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 602685 since 06-Feb-2009  Last updated on 21-Oct-2014Webmaster: nopr@niscair.res.in