کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1249651 970708 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sensing of 2,4-dichlorophenoxyacetic acid by surface-enhanced Raman scattering
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Sensing of 2,4-dichlorophenoxyacetic acid by surface-enhanced Raman scattering
چکیده انگلیسی

Surface-enhanced Raman scattering (SERS) spectra of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) was obtained by employing a bi-layer gold substrate, assembled by the reduction of Au(III) over gold-seeded nanoparticles immobilized on functionalized glass substrates. The SERS signal was linear with the logarithm of the solution concentrations between 1.0 × 10−7 mol L−1 and 1.0 × 10−3 mol L−1, indicating that the bi-layer gold substrate affords a significant dynamic range for SERS, providing an excellent analytical response within this concentration range, and revealing the high sensitivity of the gold surface towards such analyte. In addition, using the same gold substrate, a similar calibration curve was obtained for crystal-violet (CV), and it was possible to identify the concentration limit corresponding to the transition from the average SERS to the nonlinear SERS response.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vibrational Spectroscopy - Volume 54, Issue 2, 18 November 2010, Pages 133–136
نویسندگان
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