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http://nopr.niscpr.res.in/handle/123456789/20221| Title: | A polymeric membrane ion selective electrode based on organic-inorganic composite ion exchanger for the determination of thorium(IV) |
| Authors: | Chandra, Sulekh Agarwal, Himanshu Singh, Chandan Kumar Sindhu, Susheel Kumar Kumar, Pankaj |
| Issue Date: | Oct-2005 |
| Publisher: | NISCAIR-CSIR, India |
| IPC Code: | Int. Cl.7 B01J39/00; C01F15/00; G01N30/96; H01M4/00; |
| Abstract: | A poly(vinyl chloride) membrane electrode based on organic-inorganic composite ion exchanger, tin(IV) tungstoselenatepyridine, has been prepared and tested for the selective determination of thorium(IV) ions. The PVC membrane electrode comprising 16% composite ion exchanger as the electroactive phase, 50% o-dioctyl phthalate as plasticizer, 4% tetraphenyl borate as anionic excluder and 30% poly(vinyl chloride) displays a linear response to thorium(IV) ions over a wide concentration range of 1.0×10-1-8.0×10-6 M with a Nernstain slope of 14.2 mV/ decade. The electrode shows a very short response time (~15 s) and may be used in the pH range 2.5-9.0. The selectivity coefficient for alkali, alkaline earth and transition is smaller than 4.0×10-4. The sensor has been successfully used as an indicator electrode in the potentiometric titration of Th4+ with EDTA as well as also for the determination of Th4+ in the binary mixtures. |
| Page(s): | 2060-2063 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.44A(10) [October 2005] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 44A(10) 2060-2063.pdf | 779.26 kB | Adobe PDF | View/Open |
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