Ponceau polymer film for electrocatalytic sensing of levodopa in human serum, urine, and pharmaceutical formulation

Microchemical Journal, Год журнала: 2023, Номер 197, С. 109784 - 109784

Опубликована: Дек. 9, 2023

Язык: Английский

---

Colorimetric sensing of uric acid based on sawdust-deposited silver nanoparticles via an eco-friendly and cost-effective approach

Frontiers in Materials, Год журнала: 2023, Номер 10

Опубликована: Ноя. 28, 2023

Uric acid is directly linked to gout, arthritis, neurological, cardiovascular, and kidney-related disorders. It a byproduct obtained from the breakdown of purines significant indicator hyperuricemia observed in both urine blood. In absence any enzyme, it's quite difficult develop novel, cost-effective, clinical method for uric detection. Herein, we report very simple, low-cost, non-enzymatic selective identification quantification using green synthesized silver nanoparticles (Ag NPs). The desired Ag NPs were by hydrothermal Erythrina suberosa sawdust as deagglomeration agent Psidium guajava extract reductant. synthesis sensing platform, i.e., sawdust-deposited NPs, was confirmed through different techniques such UV-Vis spectrophotometer, FTIR, XRD, EDX, scanning electron microscopy (SEM). Sawdust can offer good, environmentally friendly, cost-effective strategy overcome problem agglomeration nanoparticles. enzyme mimic, with help H 2 O , oxidizes colorless 3,3′,5,5′-tetramethylbenzidine (TMB) oxidized TMB blue-green color. addition reduces product, resulting colorimetric change. For quality improvement, reaction parameters, including pH, time, TMB, concentration, optimized. Our proposed sensor responds linear ranges 0.04–0.360 μM, limit 0.01 μM detection 0.004 μM. suggested mimic detected blood samples, particular specificity presence competitive analytes.

Язык: Английский

---

Development of a chitosan-gold nanocomposite based disposable pencil graphite electrode for the selective detection of thiram in peach juice

International Journal of Environmental & Analytical Chemistry, Год журнала: 2024, Номер unknown, С. 1 - 15

Опубликована: Май 13, 2024

Hazardous chemicals that are mostly employed in modern agriculture for pest management have caused long-term environmental accumulation as well major issues with food safety and human health. So, there is an urgent demand efficient detection methods monitoring. To do this, the most contemporary electrochemical sensor technology suggested. In this study, a new has been developed to detect thiram (Th) fungicide, utilising modified activated pencil graphite electrode (a-PGE) made from chitosan-gold nanoparticle polymer (Ch-AuNPs) first time. The Ch-AuNPs/a-PGE surface characterised using cyclic voltammetry (CV), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS). Following adjustments experimental parameters, proposed demonstrated linear calibration curve within range of 4.90–140 μM, displaying rapid response limit 1.15 μM. exhibited notable selectivity, stability, reproducibility. assess its practical utility, was applied analyse peach juice, recovery process indicated effectiveness practical, swift, tool pesticide residue

Язык: Английский

---

Sunset Yellow-Cu(II) Complex: DFT-supported electrochemical investigation and determination of Cu(II) ions in human serum and artificial sweat

Microchemical Journal, Год журнала: 2024, Номер 208, С. 112441 - 112441

Опубликована: Дек. 11, 2024

Язык: Английский

---