کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6612459 | 459583 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Digital simulation of chronoamperometry at a disk electrode under a flat polymer film containing an enzyme
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Current-time and steady state current behaviour were simulated for an ultramicrodisk electrode (UMDE) inlaid flush with an insulating plane and overlaid by a flat film of polymer containing an enzyme, of various film thicknesses and essentially infinite extent. Steady state currents go through a maximum for some film thickness H, and then approach a constant value for thicker films. This constant value is the same as that for the diffusion limited current at an UMDE in a semi-infinite medium. Response times to 95% of the steady state current, for thin films are shorter than can be achieved using a flat disk electrode and a hemispherical polymer drop, but for large H they are slightly longer for comparable film thicknesses/radii. A hemispherical electrode under a hemispherical polymer drop, however, behaves much like the present arrangement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 152, 10 January 2015, Pages 302-307
Journal: Electrochimica Acta - Volume 152, 10 January 2015, Pages 302-307
نویسندگان
Dieter Britz, Jörg Strutwolf,