کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7150004 | 1462120 | 2012 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microfluidic device for compositional analysis of solvent systems at microwave frequencies
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Microfluidic device for compositional analysis of solvent systems at microwave frequencies Microfluidic device for compositional analysis of solvent systems at microwave frequencies](/preview/png/7150004.png)
چکیده انگلیسی
A device for analysing the chemical composition of single- and multi-phase solvent flows using microfluidic dielectric spectroscopy is demonstrated in this work. An open-circuited, half-wavelength, coaxial resonator operating at microwave frequencies (i.e. harmonics of 600Â MHz) was embedded in a compression-sealed polytetrafluoroethylene microfluidic chip for in situ characterization of solvent-solvent and solute-solvent mixtures of varying concentration, and an aqueous-organic segmented flow. Results are shown for a solvent mixture of acetonitrile in toluene as a test system, exhibiting a sensitivity limit of 400Â nM. In addition to being highly sensitive, the measurement system is fast, robust and non-invasive, and can be readily miniaturized.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 169, 5 July 2012, Pages 213-221
Journal: Sensors and Actuators B: Chemical - Volume 169, 5 July 2012, Pages 213-221
نویسندگان
David J. Rowe, Adrian Porch, David A. Barrow, Christopher J. Allender,