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http://nopr.niscpr.res.in/handle/123456789/17960| Title: | Mercury(II) ion sensing with PVC-matrix based membrane sensors |
| Authors: | Mahajan, Rakesh Kumar Kaur, Ravneet Lobana, Tarlok S |
| Issue Date: | Mar-2006 |
| Publisher: | NISCAIR-CSIR, India |
| IPC Code: | Int. Cl.8 G01N27/333 |
| Abstract: | Thiosemicarbazone derivatives have been used as ion carriers for the preparation of PVC-matrix based mercury(II)selective membrane sensors. The electrodes give near-Nernstian responses in the linear concentration range of 1.0×10-1-5.0×10-6 M with detection limits of the order of ~10-6 M . The stable potentiometric signals are obtained within a short time period of 20-255. The effect of different plasticizers has been studied and dioctylsebacate (DOS) found to give a better response in comparison to other plasticizers. Selectivity coefficient values (log KPotHg,M ) have been evaluated using fixed interference method. Better selectivity for mercury(II) ions is observed over many of the mo novalent (Na+, K+ and NH4+) and divalent ions (Mg2+, Ca2+, Zn 2+ , Pb2+ , Ni2+, Co2+, etc.). The sensors have also been used as indicator electrodes in potentiometric titration of mercury(II) ions with EDT A and its determination in synthetic water samples. |
| Page(s): | 639-642 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.45A(03) [March 2006] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 45A(3) 639-642.pdf | 830.04 kB | Adobe PDF | View/Open |
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