کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1231636 1495219 2015 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of an innovative 9 GHz EPR surface detection method and its application to non-invasive human fingers and nails investigation
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Development of an innovative 9 GHz EPR surface detection method and its application to non-invasive human fingers and nails investigation
چکیده انگلیسی


• We developed a surface-type cavity of 9 GHz EPR and applied it to measure human fingers and nails.
• Dynamics of topically applied 1.0 mM TEMPOL solution on a human finger and nail were investigated.
• The 9 GHz surface-type detection exhibits the good potential of studying biomedical samples.

We developed an innovative surface-type cavity for 9 GHz electron paramagnetic resonance (EPR) and used it to non-invasively measure human fingers and nails. This surface-type cavity measures a sample on the top of the cavity instead of a sample inserted into the cavity. To verify the performance of this method, 5–10 μL of 0.1 mM 4-hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPOL) aqueous solution in a 1.0-mm (i.d.) glass capillary was used. Although the detectable radical concentration of the surface-type cavity is lower than that of a commercial cavity, the surface-type cavity can measure biomedical samples. In addition, the cavity is capable of measuring human fingers and nails. The dynamics of a topically applied 1.0-mM TEMPOL solution with a commercial lotion (5:1 by weight) on a human finger and nail were investigated. The present EPR results suggest that TEMPOL in solution may not easily permeate into the finger and nail during the measurements. Therefore, 9 GHz surface-type detection exhibits the good potential to study paramagnetic species in bulky biomedical samples.

Demonstrative pictures of a non-invasive finger (left-hand) and nail (right-hand) measurements using 9 GHz electron paramagnetic resonance (EPR).Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 150, 5 November 2015, Pages 461–464
نویسندگان
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