Correlation and linear regression

Pandis, Nikolaos

doi:10.1016/j.ajodo.2015.11.010

Cited by 5 publications

(1 citation statement)

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“…with R 2 value is 0.9897. The R 2 value obtained in this study is still acceptable because the acceptable linear correlation value or R 2 in chemical research is greater than 0.80 and less than 1.00 [13]. It can be said that the dopamine concentration is directly proportional to 03009-4 the anodic peak current produced.…”

Section: Limit Of Detection (Lod) From Swcnts Kb and Aunps Modified G...mentioning

confidence: 55%

Single-Walled Carbon Nanotubes (SWCNTs), Ketjen Black (KB), and Gold Nanoparticles (AuNPs) Modified Glassy Carbon Electrode for Highly Selective Dopamine Sensing

Ardyansyah¹,

Tominaga²,

Kurniawan³

2022

J. Nano- Electron. Phys.

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Modification of glassy carbon electrode (GCE) with single-walled carbon nanotubes (SWCNTs), Ketjen Black (KB), and gold nanoparticles (AuNPs) has been done. The modification was performed using drop coating method. Comparison performance between unmodified and modified GCE for detecting dopamine was carried out using cyclic voltammetry in 0.10 M acetate buffer solution (pH 4). It was performed in the potential range from -0.80 V to 0.80 V with a scan rate of 100 mV/s at room temperature. The results showed that modified GCE could produce higher anodic peak currents than unmodified GCE. This indicates that the synergistic effect between SWCNTs, KB, and AuNPs has succeeded to improve the performance of GCE. The limit of detection (LOD) of modified GCE for dopamine solution was determined using a calibration curve which plots the concentration variation to the anodic peak current. The calculation of LOD was found to be 0.49 M. Modified GCE showed good selectivity in dopamine without any interference signal from a solution of uric acid (UA), ascorbic acid (AA), glucose (Glu), and urea (U) in 0.10 M acetate buffer solution with pH 4. In this condition, only dopamine increases oxidation and reduction currents. The results indicated that modified GCE using SWCNTs, KB, and AuNPs can be used for highly selective dopamine sensing.

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Section: Limit Of Detection (Lod) From Swcnts Kb and Aunps Modified G...mentioning

confidence: 55%