Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/93058
Title: Adsorptive Stripping Voltammetric Determination of Traces of Molybdenum in Natural Water in the Presence of α-Benzoinoxime
Authors: Gao, Z. 
Siow, K.S. 
Keywords: α-benzoinoxime
Adsorptive stripping voltammetry
Molybdenum
Issue Date: 1996
Source: Gao, Z.,Siow, K.S. (1996). Adsorptive Stripping Voltammetric Determination of Traces of Molybdenum in Natural Water in the Presence of α-Benzoinoxime. Mikrochimica Acta 124 (3-4) : 211-218. ScholarBank@NUS Repository.
Abstract: The electrochemical behavior of the molybdenum complex of α-benzoinoxime was investigated using cyclic voltammetry and linear scan voltammetry, after adsorptive accumulation of the complex onto a hanging mercury drop electrode (HMDE). The signal corresponds to the reduction of molybdenum in the complex adsorbed at the HMDE surface. Under optimal conditions, the adsorptive stripping voltammetric procedure gave an extremely low detection limit of 0.1 nM (9.6 ng/1) Mo(VI) following stirred accumulation for 5 min at 0.0 V (vs. Ag/AgC1). The reduction current-[Mo(VI)] relationships were linear up to 25 and 100 nM. Repetitive determinations of 10 nM solutions gave relative standard deviations of 2.2 and 3.5%, for 1 and 5-min accumulation periods, respectively. Most of the ions investigated did not interfere with the determination of molybdenum, except for tungsten. Excellent selectivity against copper was observed. The proposed procedure was applied to the direct determination of molybdenum in natural water.
Source Title: Mikrochimica Acta
URI: http://scholarbank.nus.edu.sg/handle/10635/93058
ISSN: 00263672
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

10
checked on Feb 15, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.