Quasi-Real Time Quantification of Uric Acid in Urine Using Boron Doped Diamond Microelectrode with in Situ Cleaning

2012 ◽  
Vol 84 (23) ◽  
pp. 10207-10213 ◽  
Author(s):  
Raphael Kiran ◽  
Emmanuel Scorsone ◽  
Pascal Mailley ◽  
Philippe Bergonzo
Keyword(s):  
Uric Acid ◽  
Real Time ◽  
Boron Doped Diamond ◽  
Boron Doped

scholarly journals Quantitative In-Situ Nanoindentation of Thin Films in a Transmission Electron Microscope

2001 ◽  
Vol 7 (S2) ◽  
pp. 912-913
Author(s):  
A.M. Minorl ◽  
E.A. Stach ◽  
J.W. Morris
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Real Time ◽  
Silicon Substrates ◽  
Boron Doped Diamond ◽  
Boron Doped ◽  
Transmission Electron ◽  
Diamond Indenter ◽  
Force Calibration

A unique in situ nanoindentation stage has been built and developed at the National Center for Electron Microscopy in Berkeley, CA. By using piezoceramic actuators to finely position a 3-sided, boron-doped diamond indenter, we are able to image in real time the nanoindentation induced deformation of thin films. Recent work has included the force-calibration of the indenter, using silicon cantilevers to establish a relationship between the voltage applied to the piezoactuators, the displacement of the diamond tip, and the force generated.In this work, we present real time, in situ TEM observations of the plastic deformation of Al thin films grown on top of lithographically-prepared silicon substrates. The in situ nanoindentations require a unique sample geometry (see Figure 1) in which the indenter approaches the specimen normal to the electron beam. in order to meet this requirement, special wedge-shaped silicon samples were designed and microfabricated so that the tip of the wedge is sharp enough to be electron transparent.

In Situ ATR-IR Observation of the Electrochemical Oxidation of a Polycrystalline Boron-Doped Diamond Electrode in Acidic Solutions

2018 ◽  
Vol 122 (48) ◽  
pp. 27456-27461 ◽  
Author(s):  
Taiga Ogose ◽  
Seiji Kasahara ◽  
Norihito Ikemiya ◽  
Nagahiro Hoshi ◽  
Yasuaki Einaga ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Boron Doped Diamond ◽  
Acidic Solutions ◽  
Diamond Electrode ◽  
Boron Doped ◽  
Boron Doped Diamond Electrode

In-situ graphene modified self-supported boron-doped diamond electrode for Pb(II) electrochemical detection in seawater

2020 ◽  
Vol 527 ◽  
pp. 146761 ◽  
Author(s):  
Jingxuan Pei ◽  
Xiang Yu ◽  
Zhiqiang Zhang ◽  
Jing Zhang ◽  
Songbo Wei ◽  
...  
Keyword(s):  
Electrochemical Detection ◽  
Boron Doped Diamond ◽  
Diamond Electrode ◽  
Boron Doped ◽  
Boron Doped Diamond Electrode

In Vivo Real-Time Simultaneous Examination of Drug Kinetics at Two Separate Locations Using Boron-Doped Diamond Microelectrodes

2020 ◽  
Vol 92 (20) ◽  
pp. 13742-13749
Author(s):  
Ai Hanawa ◽  
Genki Ogata ◽  
Seishiro Sawamura ◽  
Kai Asai ◽  
Sho Kanzaki ◽  
...  
Keyword(s):  
Real Time ◽  
Boron Doped Diamond ◽  
Boron Doped ◽  
Drug Kinetics

scholarly journals On the Degradation of 17-β Estradiol Using Boron Doped Diamond Electrodes

Processes ◽  
2020 ◽  
Vol 8 (6) ◽  
pp. 710 ◽  
Author(s):  
Sandra Maldonado ◽  
Manuel Rodrigo ◽  
Pablo Cañizares ◽  
Gabriela Roa ◽  
Carlos Barrera ◽  
...  
Keyword(s):  
Uric Acid ◽  
Radical Scavenger ◽  
Direct Oxidation ◽  
Diamond Electrodes ◽  
Boron Doped Diamond ◽  
Oxidation Processes ◽  
Boron Doped ◽  
17Β Estradiol ◽  
Current Densities ◽  
Adsorption Desorption

This work focuses on the evaluation of the degradation of 17β-estradiol in a mixture of synthetic urine and methanol, trying to determine in which conditions the hormone can be more easily degraded than the urine compounds. This is in the frame of an overall study in which the pre-concentration stage with adsorption/desorption technology is evaluated to improve electrolysis efficiency. Results show that this pollutant can be efficiently removed from mixtures of urine/methanol by electrolysis with diamond electrodes. This removal is simultaneous with the removal of uric acid (used as a model of natural pollutants of urine) and leads to the formation of other organic species that behave as intermediates. This opens the possibility of using a concentration strategy based on the adsorption of pollutants using granular activated carbon and their later desorption in methanol. Despite methanol being a hydroxyl radical scavenger, the electrolysis is found to be very efficient and, in the best case, current charges lower than 7 kAh·m−3 were enough to completely deplete the hormone from urine. Increases in the operation current density lead to faster but less efficient removal of the 17β-estradiol, while increases in the operation flowrate do not markedly affect the efficiency in the removal. Degradation of 17β-estradiol is favored with respect to that of uric acid at low current densities and at high flowrates. In those conditions, direct oxidation processes on the surface of the anode are encouraged. This means that these direct processes can have a higher influence on the degradability of the hazardous species and opens the possibility for the development of selective oxidation processes, with a great economic impact on the degradation of the hazardousness of hospitalary wastewater.

scholarly journals Boron Doped Diamond Electrodes for Direct Measurement in Biological Fluids: An In Situ Regeneration Approach

2012 ◽  
Vol 160 (1) ◽  
pp. H67-H73 ◽  
Author(s):  
Raphael Kiran ◽  
Emmanuel Scorsone ◽  
Jacques de Sanoit ◽  
Jean-Charles Arnault ◽  
Pascal Mailley ◽  
...  
Keyword(s):  
Direct Measurement ◽  
Biological Fluids ◽  
Diamond Electrodes ◽  
Boron Doped Diamond ◽  
Boron Doped ◽  
In Situ Regeneration

scholarly journals The Detection of Nitrate Using in-situ Copper Nanoparticle Deposition at a Boron Doped Diamond Electrode

2005 ◽  
Vol 21 (12) ◽  
pp. 1421-1430 ◽  
Author(s):  
Christine M. WELCH ◽  
Michael E. HYDE ◽  
Craig E. BANKS ◽  
Richard G. COMPTON
Keyword(s):  
Copper Nanoparticle ◽  
Boron Doped Diamond ◽  
Nanoparticle Deposition ◽  
Diamond Electrode ◽  
Boron Doped ◽  
Boron Doped Diamond Electrode
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