A nano-sensor based on screen printed electrode (SPE) for electro-chemical detection of vitamin B9

Abstract

The present study designed an electro-chemical instrument with high sensitivity and selectivity on the basis of a SPE modified with La +3 /Co3O4 nano-cubes in order to analyze vitamin B9. It was confirmed that this sensor possesses very good electronmoderating behaviors to oxidize vitamin B9 in a 0.1 M phosphate buffer solution (PBS) (pH=7.0). In addition, according to optimal conditions (pH=7.0), a potential around 110 mV less positive than the one in the un-modified electrodes is required for vitamin B9 oxidation at this electrode surface. This technique limit of determination for vitamin B9 has been estimated to be 0.3 μM (S/N = 3). Responses have been linear in concentrations range between 1.0 and 600.0 μM. The modified electrode has been applied to detect vitamin B9 in real specimens, which was accompanied by acceptable outputs. Experiments showed that La +3 /Co3O4 nano-cubes will be valuable electrode materials providing a high ratio of surface to volume that enhances sensitivity. The study introduces a novel sensor with simpleness, quickness, sensitivity, and affordability features to quantify vitamin B9. A nano-sensor based on screen printed electrode (SPE) for electro-chemical detection of vitamin B 9 .

Electrochemical detection of folic acid using a modified screen printed electrode

“…The limit of detection value was calculated to be 0.03±0.001 μM. It is better than some recent report in determination of folic acid using SPE [75].…”

Flower-like MoS2 screen-printed electrode based sensor for the sensitive detection of sunset yellow FCF in food samples

“…Further, the sample volume required for an SPE is as low as 50 μL. Additionally, the surface of the SPEs' working electrode may be readily modified to improve the sensibility, lowering the detection limit, and increasing the selectivity of the electrochemical methods [15,16]. The chemical modification of inert substrate electrodes offers significant advantages in the design and development of electrochemical sensors [17][18][19][20][21][22][23][24][25][26][27][28][29][30].…”

An overview of recent advances in the detection of ascorbic acid by electrochemical techniques

“…AA can control diseases caused by free radicals due to its strong antioxidant activity. Hence, the level of AA in the body is regulated through precise and programmed mechanisms [1][2][3]. The allowable level of AA in the body is estimated at 0.6 to 2 mg/dL.…”