کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10133656 1645599 2018 28 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sensing of halogenated aromatic hydrocarbons in water with a cavitand coated piezoelectric device
ترجمه فارسی عنوان
حسگر هیدروکربن های آروماتیک هالوژن در آب با یک دستگاه پیزوالکتریک پوشش داده شده با کاویتند
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
A study leading to the development of a piezoelectric sensing device for environmental monitoring of aromatic micropollutants in water is reported. A Piezoelectric Quartz Crystal (PQC) was functionalized through electropolymerization of a quinoxaline cavitand, known to possess remarkable capabilities in selectively trapping aromatic compounds through multiple π-π and CH-π interactions. The obtained film was characterized via X-ray Photoelectron spectroscopy (XPS) to elucidate its chemical composition. The design and synthesis of the new quinoxaline cavitand functionalized at the upper rim with a bithiophene moiety suitable for electropolymerization is described. The molecular structure of the new receptor was elucidated via X-ray diffraction analysis. The performance of the obtained sensor towards selected chlorinated and not chlorinated hydrocarbons in water was tested. Excellent limit of detection (0.17 ppm), below the present stringent Italian value, was achieved for 1,2,4-trichlorobenzene, outperforming conventional systems. The frequencymetric sensor showed high reproducibility from independent functionalized PQCs, with RSD values lower than 5%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 276, 10 December 2018, Pages 340-348
نویسندگان
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