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Electroanalytical Studies of Chromone Based Ionophores for the Selective Determination of Arsenite Ion
Author(s) -
Gupta Neha,
Singh Ashok Kumar,
Bhardwaj Shubhrajyotsna,
Singhal Divya
Publication year - 2015
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201400533
Subject(s) - arsenite , chemistry , hydrazone , chromone , potentiometric titration , detection limit , titration , selectivity , inorganic chemistry , ion , membrane , nuclear chemistry , medicinal chemistry , chromatography , stereochemistry , organic chemistry , arsenic , biochemistry , catalysis
Abstract Two chemosensors 4 H ‐1‐benzopyran‐3‐carboxaldehyde, 4‐oxo‐, 3‐(2‐phenylhydrazone), [I 1 ] and 4 H ‐1‐benzopyran‐3‐carboxaldehyde, 4‐oxo‐, 3‐[2‐(2,4‐dinitrophenyl)hydrazone], [I 2 ] with hydrazone‐NH group as binding site have been shown excellent selectivity for arsenite ion. It is confirmed by the UV‐vis titration that I 2 is more selective than I 1 . The performance of the coated graphite electrode (CGE) was found to be better than polymeric membrane electrode (PME) in terms of linear range of 4.89×10 −7 –1.0×10 −1 mol L −1 , low detection limit of 8.31×10 −8 mol L −1 and short response time. The proposed sensors were also used to determine the arsenite ion in different water samples.