Bøger af Saumya Varghese

This book highlights the need for precise estimation of sodium benzoate in soft drinks. Firstly, it addresses the health concerns related to the excessive intake of sodium benzoate. Scientific studies have associated high levels of sodium benzoate consumption with adverse effects such as allergic reactions, hyperactivity in children, and possible DNA damage. Thus, monitoring and controlling the concentration of this preservative in soft drinks is paramount. Water quality parameters play a crucial role in assessing the safety, purity, and suitability of drinking water. This abstract highlights the significance of specific parameters, namely dissolved oxygen (DO) and chemical oxygen demand (COD), pH in evaluating the quality of drinking water and ensuring its compliance with health and environmental standards and also addresses the potential health risks associated with contaminated drinking water. Pathogens, such as bacteria E.coli/Coliform can pose serious health threats if present in drinking water. Measuring water quality parameters enables the identification and monitoring of these contaminants, helping to prevent waterborne diseases and protect public health.

Gold nanoparticles are nanoscale particles made of gold atoms. They typically range in size from 1 to 100 nanometers and exhibit unique optical, electronic, and catalytic properties. These properties make them highly valuable and useful in various fields, including medicine, electronics, catalysis, and sensing. Gold nanoparticles have gained significant attention due to their unique properties and potential applications in various fields, including medicine, electronics, catalysis, and sensing. Green synthesis methods offer a sustainable and eco-friendly alternative to traditional chemical synthesis routes, minimizing the use of hazardous chemicals and reducing the environmental impact. In recent years they had been a tremendous transition to green synthesis of the same among which the synthesis using plant extract is mainly adopted. In this study we explore the action of Camellia Sinensis (tea leaves) as a green method to synthesize gold nanoparticles.

Plasticizers are commonly used in sensor fabrication to improve the mechanical properties and flexibility of the sensing materials. However, the choice of plasticizer can influence the performance and sensing characteristics of the biomimetic potentiometric sensor for atrazine. Different plasticizers can affect the sensitivity, selectivity, and response time of the sensor.The potential response of the sensor was studied using different plasticisers Dioctyl phthalate, DOP and Bis(2-ethyl hexyl)sebacate, BEHS. The sensor with BEHS shows a better Nernstian response in the range of 10-4 M - 10-8 M with a limit of detection 1×10-8 M and a slope of 56.2 mV. The newly created sensor has a dynamic response time of one minute and fifty seconds, and conditioning the sensor in a buffer containing 0.1 M acetic acid is necessary to obtain more accurate, repeatable findings.This study describes how plasticizers affected the design of a biomimetic potentiometric atrazine sensor.

Mesoporous silica refers to a unique class of materials characterized by their well-ordered and interconnected network of nanoscale pores. These materials are primarily composed of silicon dioxide (SiO2), commonly known as silica, and exhibit a highly porous structure with pore sizes typically ranging from 2 to 50 nanometers. Overall, mesoporous silica combines a high surface area, controlled pore structure, and tunable surface properties, making it a versatile material with significant potential in diverse scientific and technological areas. In this review methods of synthesis, various uses and applications of mesoporous silica nanoparticles, limitations regarding them and future scope of studies are discussed.

Iodine is an important component for thyroid hormone that are essential for growth, nervous system and metabolism. Iodine shortage can cause slow functioning of thyroid gland resulting in Struma, a condition of swelling of thyroid gland. Excess iodine results in abnormal heart beats, loss of weight etc. So the iodide selective electrodes play a major role in the field of analytical chemistry. This report aims at developing a solid contact ISE for iodide ion using carbon cloth material as the backbone.

Green synthesis of metal and metal oxide nanoparticles has been a highly attractive research area over the last decade. Numerous kinds of natural extracts i.e., biocomponents like plant, bacteria, fungi, yeast, and plant extract have been employed as efficient resources for the synthesis and/or fabrication of materials. Among them, plant extract has been proven to possess high efficiency as stabilizing and reducing agents for the synthesis of controlled materials (i.e., controlled shapes, sizes, structures, and other specific features). Studies have expanded the self-assembly of nanomaterials, particularly in the fast developing field of building large-scale and long-range ordered structures from multi-component and multidimensional nanomaterials. Here we synthesized metal and metal oxide nanoparticles from plant extracts and characterized using uv visble spectroscopy and scanning electron microscopy.

Metal¿ organic frameworks (MOFs), also known as porous coordination polymers, are a fascinating class of highly ordered crystalline coordination polymers formed by the coordination of metal ions/clusters and organic bridging linkers/ ligands. Owing to their unique structures and properties, i.e., high surface area, tailorable pore size, high density of active sites, and high catalytic activity, various MOF-based sensing platforms have been reported. In this review methods of synthesis,various uses and applications of MOF¿s, limitations regarding them and future scope of studies are discussed.

"Design and Development of Biomimetic Potentiometric Sensor for Atrazin" is a book that explores the creation and implementation of a specialized sensor inspired by nature, specifically biomimetic principles. Focusing on detecting the pesticide atrazine, this book delves into the design and development processes involved in constructing a potentiometric sensor that mimics natural systems. By drawing inspiration from biological mechanisms, the book aims to provide insights and practical applications for designing innovative and efficient sensors in environmental monitoring and agricultural industries.