Please use this identifier to cite or link to this item:
http://archive.cmb.ac.lk:8080/xmlui/handle/70130/6234
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kaumal, M. N. | |
dc.contributor.author | Perera, L Hasini R | |
dc.contributor.author | Nissanka, N. A. A. Buddhini | |
dc.date.accessioned | 2021-10-25T05:29:35Z | |
dc.date.available | 2021-10-25T05:29:35Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 2586-9396 (Online) | |
dc.identifier.uri | http://archive.cmb.ac.lk:8080/xmlui/handle/70130/6234 | |
dc.description.abstract | A rapid, precise, low cost, selective and sensitive paper-based electrochemical device for the determination of H2O2 in milk is described here. Commercially available varnish and a simple hand drawing method were used to develop the hydrophobic pattern to generate a hydrophilic detection zone on the filter paper. The electrode system was fabricated on the detection zone in order to detect H2O2 electrochemically. A commercially available graphite pencil and conductive silver ink were used to fabricate the counter electrode and pseudo-reference electrode, respectively. A paste of Prussian blue (PB) modified graphite, unmodified graphite and phenol-formaldehyde polymer were used to fabricate a PB modified graphite working electrode on paper. This modified electrode showed electrocatalytic activity towards the reduction of H2O2 and it was successfully used for the chronoamperometric detection of H2O2 at 0 V vs Ag reference electrode in 0.1 mol l -1 phosphate buffer, buffered at pH 6.0 in 0.1 mol l -1 KCl. Under optimum conditions, the calibration curve for the H2O2 determination was linear from 5 to 50 mmol l -1 with a detection limit (LoD = 𝑥̅+ 3SD) of 4.0 mmol l -1 . In addition, the PB modified graphite electrode showed selectivity for H2O2 detection in the presence of ascorbic acid, sucrose and citric acid. | |
dc.description.abstract | Abstract A rapid, precise, low cost, selective and sensitive paper-based electrochemical device for the determination of H2O2 in milk is described here. Commercially available varnish and a simple hand drawing method were used to develop the hydrophobic pattern to generate a hydrophilic detection zone on the filter paper. The electrode system was fabricated on the detection zone in order to detect H2O2 electrochemically. A commercially available graphite pencil and conductive silver ink were used to fabricate the counter electrode and pseudo-reference electrode, respectively. A paste of Prussian blue (PB) modified graphite, unmodified graphite and phenol-formaldehyde polymer were used to fabricate a PB modified graphite working electrode on paper. This modified electrode showed electrocatalytic activity towards the reduction of H2O2 and it was successfully used for the chronoamperometric detection of H2O2 at 0 V vs Ag reference electrode in 0.1 mol l -1 phosphate buffer, buffered at pH 6.0 in 0.1 mol l -1 KCl. Under optimum conditions, the calibration curve for the H2O2 determination was linear from 5 to 50 mmol l -1 with a detection limit (LoD = 𝑥̅+ 3SD) of 4.0 mmol l -1 . In addition, the PB modified graphite electrode showed selectivity for H2O2 detection in the presence of ascorbic acid, sucrose and citric acid. | |
dc.language.iso | en | en_US |
dc.publisher | King Mongkut's Institute of Technology Ladkrabang (KMITL), Thailand | en_US |
dc.subject | low-cost device | en_US |
dc.subject | H2O2 detection | en_US |
dc.subject | paper-based device | en_US |
dc.subject | electrochemical device | en_US |
dc.subject | modified graphite-based electrode | en_US |
dc.title | Low Cost Paper-based Electrochemical Sensing Platform for the Determination of Hydrogen Peroxide | en_US |
dc.type | Article | en_US |
Appears in Collections: | Department of Chemistry |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
251624-Article Text-888639-1-10-20210721.pdf | 353.74 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.