کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10528894 | 960757 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel fluorimetric bulk optode membrane based on a dansylamidopropyl pendant arm derivative of 1-aza-4,10-dithia-7-oxacyclododecane ([12]aneNS2O) for selective subnanomolar detection of Hg(II) ions
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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 novel fluorescence chemical sensor for the highly sensitive and selective determination of mercury(II) ions in aqueous solutions is prepared. The mercury sensing system was prepared by incorporating 1-(dansylamidopropyl)-1-aza-4,10-dithia-7-oxacyclododecane (L) as a neutral Hg2+-selective fluoroionophore in the plasticized PVC membrane containing potassium tetrakis(p-chlorophenyl)-borate as a liphophilic anionic additive. The response of the sensor is based on the strong fluorescence quenching of L by Hg2+ ions. At a pH 3.3, the proposed sensor displays a calibration curve over a wide concentration range of 1.0Â ÃÂ 10â4 to 5.0Â ÃÂ 10â12Â M, with a relatively fast response time of less than 1Â min. In addition to high stability and reproducibility, the sensor shows a unique selectivity towards Hg2+ ion with respect to common coexisting cations. The proposed fluorescence optode was applied to the determination of mercury content of amalgam alloy, hair and well water samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 533, Issue 1, 21 March 2005, Pages 17-24
Journal: Analytica Chimica Acta - Volume 533, Issue 1, 21 March 2005, Pages 17-24
نویسندگان
Mojtaba Shamsipur, Morteza Hosseini, Kamal Alizadeh, Naader Alizadeh, Abdollah Yari, Claudia Caltagirone, Vito Lippolis,