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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Anion recognition through amide-based dendritic molecule: A poly(vinyl chloride) based sensor for nitrate ion
Talanta, Volume 85, No. 2, Year 2011
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Description
Poly(vinyl chloride) (PVC)-based membranes of N,N-bis-succinamide-based dendritic molecule with tetrabutyl ammonium bromide (TBAB) as a cation inhibitor and dibutylphthalate (DBP), dioctylphthalate (DOP), dibutyl (butyl) phosphonate (DBBP) and 1-chloronaphthalene (CN) as plasticizing solvent mediators were prepared and used as nitrate ion-selective electrodes. Optimum performance was observed with the membrane having I-PVC-TBAB-DBP in the ratio 1:33:1:65 (w/w). The electrode has a linear response to nitrate with a detection limit of 3.9 × 10-5 ± 0.07 M and Nernstian compliance (57.0 ± 0.2 mV/decade) between pH 2.8 and 9.6 with a fast response time of about 20 s. The selectivity coefficient values of the order of 0.001 for mono-; bi- and trivalent anions; indicate high selectivity for nitrate ions over these anions. The preparation procedure of the electrode is very easy and inexpensive. The electrodes were used over a period of 45 days with good reproducibility. The analytical usefulness of the proposed electrode has been evaluated by its application in the determination of nitrate ions in waste water samples. © 2011 Elsevier B.V.
Authors & Co-Authors
Gupta, Vinod Kumar
India, Roorkee
Indian Institute of Technology Roorkee
Saudi Arabia, Dhahran
King Fahd University of Petroleum and Minerals
Singh, Lok P.
India, Roorkee
Central Building Research Institute India
Chandra, Sudeshna
India, Mumbai
Indian Institute of Technology Bombay
Kumar, Sunita
India, Dehradun
M.k.p. (p.g.) College
Singh, Rakesh P.
India, Dehradun
D.b.s. Post Graduate College, Dehradun
Sethi, Bhavana
India, Dehradun
M.k.p. (p.g.) College
Statistics
Citations: 19
Authors: 6
Affiliations: 6
Identifiers
Doi:
10.1016/j.talanta.2011.05.014
Research Areas
Environmental