2020
DOI: 10.18257/raccefyn.919
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Limpieza de electrodos y reproducibilidad de medidas de impedancia eléctrica en células HeLa en solución acuosa

Abstract: La espectroscopia de impedancia eléctrica (EIS) se emplea en el estudio de las propiedades eléctricas de células en suspensión. Para medir las propiedades eléctricas de materiales se utilizan dos (sistema de electrodo bipolar), tres (tripolares) y cuatro (tetrapolares) electrodos, siendo las medidas tetrapolares la mejor opción para minimizar los efectos de polarización de electrodo. Cuando se repiten las medidas de EIS en una misma muestra, se espera obtener espectros similares, sin embargo, en algunas situac… Show more

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Cited by 5 publications
(2 citation statements)
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“…Voltammograms show similar trends with the same current magnitude at the desired potential with an RSD of 5.81%, demonstrating the high repeatability and reproducibility of the working electrode. 27 In our assay, increasing concentrations of target RNA in the sample results in more HRP released from the magnetic beads, leaving less HRP enzyme to oxidize TMB. As shown in Figure 3, the absorbance of the characteristic peak at 650 nm derives from the catalyzed reaction product of TMB, indicating that HRP attached to the magnetic beads possesses good catalytic ability.…”
Section: Resultsmentioning
confidence: 95%
“…Voltammograms show similar trends with the same current magnitude at the desired potential with an RSD of 5.81%, demonstrating the high repeatability and reproducibility of the working electrode. 27 In our assay, increasing concentrations of target RNA in the sample results in more HRP released from the magnetic beads, leaving less HRP enzyme to oxidize TMB. As shown in Figure 3, the absorbance of the characteristic peak at 650 nm derives from the catalyzed reaction product of TMB, indicating that HRP attached to the magnetic beads possesses good catalytic ability.…”
Section: Resultsmentioning
confidence: 95%
“…Voltammograms show similar trends with the same current magnitude at the desired potential with an RSD of 5.81%, demonstrating the high repeatability and reproducibility of the working electrode. 29 In our assay, increasing concentrations of target RNA in the sample results in more HRP released from the magnetic beads, leaving less HRP enzyme to oxidize TMB. As shown in Figure 3, the absorbance of the characteristic peak at 650 nm derives from the catalyzed reaction product of TMB, indicating that HRP attached to the magnetic beads possesses good catalytic ability.…”
Section: ■ Resultsmentioning
confidence: 95%