NISCAIR Online Periodicals Repository

Research Journals >
Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.47A [2008] >
IJC-A Vol.47A(09) [September 2008] >

Title: 2-Hydroxy-1-naphthaldehyde-p-hydroxybenzoic hydrazone as a spectropho-tometric reagent for the determination of lanthanum (III)
Authors: Chowdary, P Govinda
Reddy, K P P R Mohan
Reddy, V Krishna
Reddy, P Raveendra
Issue Date: Sep-2008
Publisher: CSIR
IPC CodeInt. Cl.⁸ G01N21/25
Abstract: A new chromophore, 2-hydroxy-1-naphthaldehyde-p-hydroxybenzoic hydrazone has been used for the determination of lanthanum (III). The reagent reacts with lanthanum (III) in aque-ous dimethyl formamide in wide pH range forming brownish yellow coloured 2:3 (M:L) soluble complex with max at 415 nm. The colour intensity further increases in the cetyl trimethyl am-monium bromide micellar medium (0.1%) at room temperature. Beer’s law is obeyed in the range 0.277-8.334 μg mL⁻¹ and 0.008-2.639 μg mL⁻¹ of La(III) in direct and derivative methods, respectively. The molar absorptivity, Sandell’s sensitivity, detec-tion limit, determination limit and relative standard deviation are found to be: 2.3810⁴ L mol⁻¹ cm⁻¹, 0.006 μg cm⁻², 0.035 μg mL⁻¹, 0.106 μg mL⁻¹ and 0.42%, respectively. The second order derivative spectrophotometric method developed for the determi-nation of lanthanum (III) shows greater sensitivity and selectivity. The proposed direct and derivative methods are applied for the determination of lanthanum in standard lanthanum samples.
Page(s): 1381-1383
ISSN: 0376-4710
Source:IJC-A Vol.47A(09) [September 2008]

Files in This Item:

File Description SizeFormat
IJCA 47A(9) 1381-1383.pdf75.05 kBAdobe PDFView/Open
 Current Page Visits: 1075 
Recommend this item


Online Submission of Articles |  NISCAIR Website |  National Knowledge Resources Consortium |  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 © 2015 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: 171793 since 01-Sep-2015  Last updated on 30-Jun-2016Webmaster: