| Titolo: | Highly selective and sensitive fluorescence optode membrane for uranyl ion based on 5-(9-anthracenylmethyl)-5-aza-2,8-dithia[9],(2,9)-1,10-phenanthrolinophane |
| Autori: | Shamsipur, M
Mohammadi, M
Taherpour, A
|
| Data di pubblicazione: | 2015 |
| Rivista: | |
| Abstract: | A highly selective and sensitive fluorescent sensor for the determination of uranyl ion is developed. The
sensing membrane was prepared by incorporating 5-(9-anthracenylmethyl)-5-aza-2,8-dithia[9],(2,9)-1,10-
phenanthrolinophane as fluoroionophore in the plasticized poly(vinyl chloride) membrane containing 2-
nitrophenyloctylether as plasticizer. The proposed sensor displays a wide linear response range of 1.0 x
10-10 to 1.0 x 10-3 M with a low limit of detection of 2.7 x 10-11 M in solution at pH 4.0. This sensor has
a relatively fast response time of less than three min. In addition to high stability and reproducibility, it
shows a unique selectivity towards uranyl ion with respect to common coexisting cations. The sensor can
be regenerated by exposure to a solution of ethylene diamine tetraacetic acid. The proposed sensor was
then applied to the determination of uranyl in water samples with satisfactory results |
| Handle: | http://hdl.handle.net/11584/173503 |
| Tipologia: | 1.1 Articolo in rivista
|
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