Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10559528 | Talanta | 2011 | 6 Pages |
Abstract
We found that the PVC membrane, containing azo calix[4]arene is a suitable ionophore, exhibited a Nernstian response for neodymium (Nd3+) ions (with slope of 19.8 ± 0.2 mV decadeâ1 for the triply charged ion) over a wide linear range of 4.0 Ã 10â8 to 1.0 Ã 10â1 mol Lâ1 with a detection limit 1.0 Ã 10â8 mol Lâ1, a relatively fast response time, in the whole concentration range (<10 s), and a considerable life time at least for four months in the pH range of 4.0-8.0. Furthermore, the electrode revealed high selectivity with respect to all the common alkali, alkaline earth, transition and heavy metal ions, including the members of the lanthanide family other than Nd3+. Concerning its applications, it was effectively employed for the determination of neodymium ions in industrial waste water as well as in lake water.
Related Topics
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Analytical Chemistry
Authors
Shobhana K. Menon, Nishith R. Modi, Bhargav Patel, Manishkumar B. Patel,