Impact of ZnO Nanostructure Morphology on Electrochemical Sensing Performance for Lead Ion Detection in Real Water Samples

Chemosensors, Journal Year: 2025, Volume and Issue: 13(2), P. 62 - 62

Published: Feb. 9, 2025

This study investigated the morphological dependence of ZnO nanostructures, specifically nanotube- and nanorod-based electrodes, on their electrochemical performance for detection lead ions (Pb2⁺) in aqueous solutions. The results demonstrate that nanotubes exhibit significantly enhanced sensitivity compared to nanorods during CV measurements. During SWV measurements, (116.79 mA·mM−1) a lower limit 0.0437 μM were determined. hollow, high-aspect-ratio structure provides larger active surface area facilitates better ion accessibility, resulting superior electron transfer efficiency catalytic activity. These underscore critical role morphology optimizing ZnO-based sensors. Analysis real water samples from various natural reservoirs revealed no detectable lead, while was identified exclusively artificially prepared containing exposed hunting shot. Over 30-day period, sensor retained over 95% its initial when stored under vacuum conditions, demonstrating minimal signal degradation. Under ambient stability loss attributed moisture adsorption porous nanostructure. also displayed outstanding reproducibility, with current response variations across multiple probes remaining within 4%. cost-effective simple fabrication process nanostructures further highlights potential scalable production, environmental monitoring, integration into portable sensing devices.

Language: Английский

Impact of milk and dairy consumption on the development and progression of breast cancer

journal of nutritional oncology, Journal Year: 2024, Volume and Issue: 9(4), P. 112 - 118

Published: Dec. 1, 2024

Abstract Recent studies have shown a link between the consumption of bovine milk and human breast cancer, apparently by agonizing estrogen receptor (ER), which results in proliferation tissues, leading to formation tumor. Bovine may also promote tumor via insulin-like growth factor-1 (IGF-1) signaling. In addition, numerous potentially carcinogenic compounds been found milk, including exosomal microRNAs (miR-148a-3p, miR-21-5p), aflatoxin M1, bisphenol A, pesticides, micro- nanoplastics. Subjects with specific genetic mutations (e.g., BRCA 1 loss-of-function) polymorphisms FTO IGF-1 upregulation) that enhance IGF-1/mTORC1 signaling might be especially susceptible ER+ cancer promoted dairy products. However, previous large-scale meta-analyses, data about processing methods, such as pasteurization ultra-high temperature treatment, are lacking, thus limiting accuracy risk assessments. Clearer more convincing evidence, detailed information, regarding timing exposure (consumption) required because current evidence suggests dietary recommendations need reevaluated.

Language: Английский