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- Bjorefors, F, et al.
(författare)
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Stripping voltammetry at preplated mercury coated microelectrodes in flowing solutions
- 1996
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Ingår i: ANALYTICA CHIMICA ACTA. - : ELSEVIER SCIENCE BV. - 0003-2670. ; 325:1-2, s. 11-24
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Tidskriftsartikel (refereegranskat)abstract
- A flow system is described in which stable preplated mercury coatings on microelectrodes can be obtained due to minimised handling of the electrode and the fact that potentiostatic control can be maintained also between the experiments. Compared to the d
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| 4. |
- Gustafsson, Anna, 1980, et al.
(författare)
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Investigation of an electrochemical method for separation of copper, indium, and gallium from pretreated cigs solar cell waste materials
- 2015
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Ingår i: The Scientific World Journal. - : Hindawi Limited. - 1537-744X .- 2356-6140. ; 2015
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Tidskriftsartikel (refereegranskat)abstract
- Recycling of the semiconductor material copper indium gallium diselenide (CIGS) is important to ensure a future supply of indium and gallium, which are relatively rare and therefore expensive elements. As a continuation of our previous work, where we recycled high purity selenium from CIGS waste materials, we now show that copper and indium can be recycled by electrodeposition from hydrochloric acid solutions of dissolved selenium-depleted material. Suitable potentials for the reduction of copper and indium were determined to be -0.5 V and -0.9 V (versus the Ag/AgCl reference electrode), respectively, using cyclic voltammetry. Electrodeposition of first copper and then indium from a solution containing the dissolved residue from the selenium separation and ammonium chloride in 1 M HCl gave a copper yield of 100.1 ± 0.5% and an indium yield of 98.1 ± 2.5%. The separated copper and indium fractions contained no significant contamination of the other elements. Gallium remained in solution together with a small amount of indium after the separation of copper and indium and has to be recovered by an alternative method since electrowinning from the chloride-rich acid solution was not effective.
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| 8. |
- Nyholm, L, et al.
(författare)
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Stability of preplated mercury coated platinum and carbon fibre microelectrodes
- 1996
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Ingår i: ANALYTICA CHIMICA ACTA. - : ELSEVIER SCIENCE BV. - 0003-2670. ; 327:3, s. 211-222
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Tidskriftsartikel (refereegranskat)abstract
- The stability of preplated mercury coatings on platinum and carbon fibre microelectrodes has been studied both after transfer of the electrodes to a mercury free solution and at open circuit in Hg(I) and Hg(II) solutions. While significant amounts of mer
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| 9. |
- Rattfält, Linda, et al.
(författare)
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Electrical Characterization of Screen Printed Electrodes for ECG Measurements
- 2011
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Ingår i: Mediterranean conference on medical and biological engineering and computing 2013. - Berlin, Heidelberg : Springer Berlin/Heidelberg. - 9783642216824 ; , s. 219-221
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Bokkapitel (refereegranskat)abstract
- Screen printed electrodes with conductive ink made of Carbon and Ag/AgCl were tested for polarization potentials and electrode impedances. In 30 minutes the mean decrease of polarization potential was 2 mV. The electrode impedances at 10 Hz were between 670 and 250 Ohms. These characteristics seem adequate for personalized health care applications.
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