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| Content Provider | Springer Nature Link |
|---|---|
| Author | Arvand, Majid Mosayebzadeh, Zahra Ansari, Reza |
| Copyright Year | 2013 |
| Abstract | In this study, a potentiometric sensor based on a pencil graphite electrode (PGE) coated with polypyrrole doped with Titan yellow dye (PPy/TY) was prepared for potentiometric determination of magnesium ion in aqueous solutions. The structural characteristics of magnesium sensor electrode (PGE/PPy/TYMg) were studied using scanning electron microscopy and Fourier transform infrared along with energy-dispersive spectroscopy. Under the optimal conditions, the electrode reveals a good Nernstian behavior with slope of 28.27 ± 0.40 mV per decade over the concentration range of 1.0 × 10$^{−5}$–5.0 × 10$^{−2}$ M and a detection limit of 6.28 × 10$^{−6}$ M. The potentiometric response of fabricated electrode toward magnesium ion was found to be independent of the pH of the test solution in the pH range of 4.5–8.0. The electrode showed fast response time (<10 s) and good shelf lifetime (>2 months). The prepared magnesium sensor electrode can also be used as an indicator electrode in potentiometric titration of Mg$^{2+}$ with EDTA with distinguished end point. The electrode revealed good selectivity with respect to many cations including alkali, alkaline earth, transition and heavy metal ions. The introduced magnesium electrode was used for measurement of Mg$^{2+}$ ion in real samples without any serious interferences from other ions. |
| Starting Page | 447 |
| Ending Page | 456 |
| Page Count | 10 |
| File Format | |
| ISSN | 1735207X |
| Journal | Journal of the Iranian Chemical Society |
| Volume Number | 11 |
| Issue Number | 2 |
| e-ISSN | 17352428 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2013-08-04 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Analytical Chemistry Magnesium electrode Physical Chemistry Titan yellow Biochemistry Inorganic Chemistry Potentiometry Polypyrrole Organic Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry |
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