A low-cost, fast, disposable and sensitive biosensor study: flow injection analysis of glucose at poly-methylene blue-modified pencil graphite electrode

2018 ◽  
Vol 15 (6) ◽  
pp. 1355-1363 ◽  
Author(s):  
Didem Giray Dilgin ◽  
Bensu Ertek ◽  
Yusuf Dilgin
Keyword(s):  
Methylene Blue ◽  
Flow Injection ◽  
Flow Injection Analysis ◽  
Graphite Electrode ◽  
Low Cost ◽  
Pencil Graphite Electrode

Low cost, trouble-free disposable pencil graphite electrode sensor for the simultaneous detection of hydroquinone and catechol

2021 ◽  
pp. 125663
Author(s):  
T.S. Sunil Kumar Naik ◽  
Arul Varman Kesavan ◽  
B.E. Kumara Swamy ◽  
Simranjeet Singh ◽  
Amith G. Anil ◽  
...  
Keyword(s):  
Graphite Electrode ◽  
Low Cost ◽  
Simultaneous Detection ◽  
Pencil Graphite Electrode ◽  
Electrode Sensor

scholarly journals Selective Determination of Dopamine in Presence of Ascorbic Acid Using Nafion Coated Methylene Blue Functionalized Graphite Electrode

2019 ◽  
Vol 31 (10) ◽  
pp. 2185-2190
Author(s):  
G. Sivasankari ◽  
K. Sivasankari ◽  
T. Nalini ◽  
P. Padmapriya ◽  
M. Nadhiya
Keyword(s):  
Methylene Blue ◽  
Ascorbic Acid ◽  
Modified Electrode ◽  
Electrode Surface ◽  
Graphite Electrode ◽  
Low Cost ◽  
Differential Pulse ◽  
Selective Determination ◽  
The Stability

An electrochemical sensor has been developed using methylene blue (MB) unctionalized graphite for the selective determination of dopamine in the presence of ascorbic acid. The immobilization of methylene blue on graphite was done by carbodiimide coupling method. The methylene blue functionalized graphite was characterized by SEM, FTIR spectroscopy and UV-visible spectroscopy. The immobilization of methylene blue functionalized graphite (MB-G) on the electrode surface was made by drop casting a small volume of MB-G dispersed methanol solution on the electrode surface. About 5 L of 0.5 % Nafion solution was also dropcasted for the stability and selectivity. The MB-G modified electrode was characterized by cyclic voltammetry. The modified electrode promotes the electrocatalytic oxidation of dopamine at a lower potential of 160 mV. The selective determination of dopamine in the presence of 100 times higher concentration of ascorbic acid was achieved by differential pulse voltammetry. The modified electrode offered a simple, selective and sensitive determination of low levels of dopamine. Also the oxidation over potential was reduced to an extent of 360 mV comparing with the bare graphite electrode. The proposed sensor has the advantage of easy fabrication, low cost, good sensitivity, reproducibility and stability.

Laboratory adaptation of the methylene blue method to flow injection analysis: towards in situ sulfide analysis in hydrothermal seawater

1999 ◽  
Vol 36 (4) ◽  
pp. 157-160 ◽  
Author(s):  
Pierre-Marie Sarradin ◽  
Nadine Le Bris ◽  
Jean-Claude Caprais ◽  
Dominique Birot
Keyword(s):  
Methylene Blue ◽  
Flow Injection ◽  
Flow Injection Analysis ◽  
Laboratory Adaptation

scholarly journals Low Cost Hydrogen Peroxide Sensor from Manganese Oxides Modified Pencil Graphite Electrode

2016 ◽  
Vol 20 ◽  
pp. 81-84 ◽  
Author(s):  
Rasamee Chaisuksant ◽  
Thitipol Chomsook ◽  
Nantaya Manthong ◽  
Kurt Kalcher
Keyword(s):  
Hydrogen Peroxide ◽  
Manganese Oxides ◽  
Graphite Electrode ◽  
Low Cost ◽  
Pencil Graphite Electrode ◽  
Hydrogen Peroxide Sensor
Sign in / Sign up

Export Citation Format

Share Document