Recent advances in electrochemical approaches for detection of nitrite in food samples

Food Chemistry, Год журнала: 2024, Номер 462, С. 140962 - 140962

Опубликована: Авг. 23, 2024

Язык: Английский

---

Application of Chitosan@Fe3O4 Nanoparticle-Modified Screen-Printed Graphene-Based Electrode for Simultaneous Analysis of Nitrite and Ascorbic Acid in Hydroponics and Fruit Juice

Sensors, Год журнала: 2025, Номер 25(5), С. 1431 - 1431

Опубликована: Фев. 26, 2025

In this work, the development of screen-printed electrodes modified with chitosan-coated magnetite nanoparticles (CTS@Fe3O4/SPGNE) for simultaneous determination nitrite (NO2−) and ascorbic acid (AA−) is presented. The study investigated various ratios graphene to (CTS@Fe3O4), as well optimal pH. These factors were examined due their impact on selectivity sensitivity analysis. results indicated that a paste CTS@Fe3O4 ratio 16:1.0 g pH 4 analysis both NO2− AA−. Additionally, behavior proposed electrode, its analytical performance, interference studies thoroughly examined. Furthermore, CTS@Fe3O4/SPGNE electrode shows potential AA− in hydroponics fruit juice samples.

Язык: Английский

---

NiFe₂O₄ Nanoparticles as Highly Sensitive Electrochemical Sensor for Nitrite Determination

Applied Organometallic Chemistry, Год журнала: 2025, Номер 39(4)

Опубликована: Март 24, 2025

ABSTRACT Taking into account the harmful influence of superfluous nitrite content onto ecosystem and human health, sensitive real‐time estimation its concentration by developing reduced cost efficient catalytic surfaces seems as a vital problem to be solved. Herein, sensing platform for ions in water samples was designated based on mixed transition metal oxides. NiFe 2 O 4 nanoparticles were fabricated using simple straightforward sol–gel protocol followed calcination at 900°C. Convenient physical characterization tools employed investigate crystal structure, morphological, chemical composition, elemental mapping distribution this formed nanocomposite. The cubic spinel structure confirmed XRD TEM analyses. average crystallite size estimated 25.70 nm wide particle range between 10 50 nm. Cyclic voltammetric study revealed pronounced oxidation current density nanomaterial when contrasted that Fe 3 1.283 times. altering scan rate electrolyte pH during relevant electrochemical measurements electroactivity oxide nanostructure evaluated. Some kinetic parameters reaction nanocomposite including Tafel slope (59.96 mV dec −1 ), exchange (2.13 × −7 A cm −2 diffusion coefficient (1.178 −3 s electron transfer constant (2.074 ) values. linear towards with outstanding sensitivity 70.57 nA μM lowered detection limit 23.9 nM could monitored nanopowder. These encouraging results might focus further efforts synthesizing binary oxides surprising activity numerous analytes determination.

Язык: Английский

---

Mucilage-capped silver nanoparticles for electrochemical quantification of methyl red in drinking water samples

Microchemical Journal, Год журнала: 2025, Номер unknown, С. 113627 - 113627

Опубликована: Апрель 1, 2025

Язык: Английский

---