کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1171083 1491174 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fast and sensitive trace analysis of malachite green using a surface-enhanced Raman microfluidic sensor
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Fast and sensitive trace analysis of malachite green using a surface-enhanced Raman microfluidic sensor
چکیده انگلیسی

A rapid and highly sensitive trace analysis technique for determining malachite green (MG) in a polydimethylsiloxane (PDMS) microfluidic sensor was investigated using surface-enhanced Raman spectroscopy (SERS). A zigzag-shaped PDMS microfluidic channel was fabricated for efficient mixing between MG analytes and aggregated silver colloids. Under the optimal condition of flow velocity, MG molecules were effectively adsorbed onto silver nanoparticles while flowing along the upper and lower zigzag-shaped PDMS channel. A quantitative analysis of MG was performed based on the measured peak height at 1615 cm−1 in its SERS spectrum. The limit of detection, using the SERS microfluidic sensor, was found to be below the 1–2 ppb level and this low detection limit is comparable to the result of the LC-Mass detection method. In the present study, we introduce a new conceptual detection technology, using a SERS microfluidic sensor, for the highly sensitive trace analysis of MG in water.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 590, Issue 2, 8 May 2007, Pages 139–144
نویسندگان
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