کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7147661 | 1462098 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Development of a novel PVC-membrane fluorescent sensor based on N,Nâ²-bis(dansylamidoethyl)-N,Nâ²-bis(2-pyridylmethyl)propylene-diamine as a new fluoroionophore for highly sensitive and selective monitoring of trace amounts of La3+ ions in aqueous solut
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A new fluorescent sensor for the highly sensitive and selective determination of La3+ ion is developed. The sensing membrane was prepared by incorporating N,Nâ²-bis(dansylamidoethyl)-N,Nâ²-bis(2-pyridylmethyl)propylenediamine (L) as fluoroionophore in the plasticized PVC membrane containing o-NPOE as plasticizer. The proposed sensor displays a wide calibration range of 5.0Â ÃÂ 10â9 to 5.0Â ÃÂ 10â4Â M with a low limit of detection of 2.0Â ÃÂ 10â9Â M in a solution of pH 6.0. This sensor has a relatively fast response time of less than 2Â min. In addition to high stability and reproducibility, it shows a unique selectivity toward La3+ ion with respect to common coexisting cations. The sensor can be regenerated by exposure to a solution of EDTA. The proposed sensor was successfully applied to the determination of La3+ in aqueous solutions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 192, 1 March 2014, Pages 378-385
Journal: Sensors and Actuators B: Chemical - Volume 192, 1 March 2014, Pages 378-385
نویسندگان
Mojtaba Shamsipur, Moslem Mohammadi, Avat (Arman) Taherpour, Vito Lippolis, Riccardo Montis,