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38 articles for “spectrophotometry”
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Modern Trends in Tungsten(VI) Analysis: From Smart Organic Reagents to High-Sensitivity Spectrophotometry
Abstract: The present review focuses on the spectrophotometric determination of tungsten(VI) using a wide range of organic reagents and their derivatives. Organic ligands have gained considerable importance in analytical chemistry due to their strong ability to form stable and highly colored complexes with tungsten(VI), which enhances the sensitivity and selectivity of spectrophotometric analysis. Various chromogenic reagents reported in the literature for tungsten(VI) determination have been critically examined and compared on the …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 17, Issue 2, 2026 · pp. 19–29 Read article
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Simultaneous Estimation of Irbesartan and Hydrochlorothiazide in Bulk and Tablet Dosage Form by UV-Spectrophotometry
Abstract: The present study describes a simple, accurate, precise and cost-effective UV Spectrophotometric method for the simultaneous estimation of irbesartan and hydrochlorothiazide in bulk and tablet dosage form. The solvent used was methanol and the absorption maxima for irbesartan and hydrochlorothiazide were found to be 250 nm and 270 nm respectively. A linear response was observed in the range of 4–20 µg/mL with a correlation coefficient of 0.998 for irbesartan and …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 3, Issue 3, 2012 · pp. 9–17 Read article
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Soil Adsorption Study of Thiram on Four Indian Soils by Extractive Spectrophotometry
Abstract: Concern about the environmental impact of an extensive use of pesticides has prompted research into the environmental fate of these agents which is strongly influenced by the interactions between the pesticides and soil. With a view to studying the fate of thiram fungicide in soil and the extent of surface and groundwater contamination, the soil-adsorption of thiram on four Indian soils of different soil characteristics has been studied by an …
Published in Research and Reviews: A Journal of Toxicology · Vol. 1, Issue 1-3, 2011 · pp. 56–62 Read article
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Development and Validation of 1, 1-Cyclohexanediacetic Acid Monoamide by using Spectrophotometry
Abstract: An accurate and sensitive spectrophotometric method is developed for the determination of 1, 1-Cyclohexanediacetic acid monoamide. The method is based on the reaction of carboxylic acid group of 1, 1-Cyclohexanediacetic acid monoamide with the mixture of potassium iodate and potassium iodide to form yellow colored product in double distilled water which measured at 346 nm against the reagent blank prepared simultaneously. Beer’s law obeyed in the concentration range of 14.14–42.42 …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 5, Issue 2, 2014 · pp. 11–17 Read article
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Titrimetric and Spectrophotometric Assay of Diethylcarbamazine Citrate in Pharmaceuticals using Permanganate as Oxidant
Abstract: Two titrimetric and one spectrophotometric methods are described for the determination of diethylcarbamazine citrate in bulk drug and dosage forms using permanganate as an oxidimetric agent. In method A, the drug solution in H2SO4 is titrated directly at 800C to a pink end point. DEC was treated with a measured excess of standard permanganate in H2SO4 medium, and after a contact time of 5 min, the residual oxidant back titrated …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 7, Issue 3, 2016 · pp. 1–11 Read article
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Microwave Assisted Digestion For Cadmium Analysis in Yoghurt Samples Using Atomic Absorption Spectrophotometer
Abstract: This paper presents an innovative approach for the digestion of dairy products aimed at determining heavy metal concentrations using atomic absorption spectrophotometry. The present study was conducted to assess the concentration of cadmium in different Yoghurt samples. A total of 80 random samples of dairy products (20 each of sour Yoghurt, sweet Yoghurt, flavoured Yoghurt, and homemade Yoghurt) were collected from different areas of Kota city. For the analysis of …
Published in Research and Reviews : Journal of Dairy Science and Technology · Vol. 13, Issue 2, 2024 · pp. 24–39 Read article
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Development and Fabrication of Biohydrogel for Targeted Delivery of Delafloxacin for Bacterial Skin Infections
Abstract: The escalating challenge of bacterial resistance necessitates innovative drug delivery systems to enhance the efficacy of antibiotics. This study focuses on the development and optimization of a biohydrogel formulation for the targeted delivery of Delafloxacin, aiming to improve its therapeutic outcomes against resistant bacterial strains. Utilizing a 3² factorial design, biohydrogel formulations incorporating Poly(N-isopropylacrylamide) (PNIPAM) and Genipin were synthesized. The optimization process was guided by Design Expert software, focusing on …
Published in Research & Reviews: A Journal of Drug Design & Discovery · Vol. 11, Issue 4, 2024 Read article
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Two New, Useful and Facile Stability-Indicating UV Spectrophotometric Methods for the Determination of Rosiglitazone in Pharmaceuticals
Abstract: Rosiglitazone (ROS) is an antidiabetic drug belonging to the thiozolidine class. Two simple, rapid, sensitive, accurate and reproducible UV-spectrophotometric methods were developed and subsequently validated for the determination of ROS in bulk and tablet form. The methods are based on the measurement of the absorbance of the drug solution either in 0.1 M NaOH (NaOH method) or in 0.1 M HCl (HCl method) at 316 nm in both instances. The …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 8, Issue 2, 2017 · pp. 8–19 Read article
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An Overview on Analytical Estimation of Citicoline
Abstract: Citicoline is a medication that is used to treat Alzheimer's disease. Citicoline is a nootropic (brainboosting) substance. It's utilized to treat brain insufficiency as well as other neurological conditions like stroke, trauma, and Parkinson's disease. The results of published analytical methods for the determination of Citicoline in biological and pharmaceutical formulations are summarized in this review article. Various techniques such as Spectrophotometry, liquid chromatography (LC), highperformance liquid chromatography (HPLC), ultra-performance …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 12, Issue 2, 2025 · pp. 1–6 Read article
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Advances in Spectrophotometric Determination of Osmium: Role of Organic Reagents in Trace Analysis and Speciation
Abstract: Osmium, a rare and highly toxic platinum-group metal, requires accurate and sensitive analytical determination due to its industrial importance and environmental hazards, particularly in the form of osmium tetroxide (OsO₄). Spectrophotometric techniques remain among the most versatile and cost-effective approaches for osmium analysis. This review provides a comprehensive evaluation of spectrophotometric methods employing a wide range of organic reagents, including sulfur-containing ligands, azo dyes, flavonoids, nitroso compounds, phenolics, and advanced …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 17, Issue 3, 2026 Read article
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A Comprehensive Exploration of Method Validation and Development in Pharmaceutical Analysis: Focus on Vortioxetine Analysis
Abstract: The pharmaceutical industry relies on rigorous method validation to ensure the accuracy, precision, and reliability of analytical techniques employed in drug testing and quality control. This comprehensive exploration delves into the validation parameters and guidelines essential for method validation, emphasizing accuracy, precision, linearity, detection and quantitation limits, specificity, range, robustness, and ruggedness. Validation plays a pivotal role in guaranteeing high-quality products, adhering to good manufacturing practices (GMP), and optimizing manufacturing …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 11, Issue 1, 2024 · pp. 46–52 Read article
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Analytical Method Development and Validation for Simultaneous Estimation of Paracetamol and Piroxicam by UV Method
Abstract: A new establishment and validation of a simple, precise, accurate and cost effective UV-Visible spectrophotometric method was developed to estimate both Paracetamol and Piroxicam simultaneously in conjoined pharmaceutical dosage forms. This technique was founded on simultaneous equation method of absorbances recorded at 252.0 nm and 282.0 nm of Paracetamol and Piroxicam in methanol respectively and an isosbestic point could be observed at 265.0 nm. It showed very good linearity over …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 12, Issue 3, 2025 · pp. 14–21 Read article
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Analytical Method Development and Validation of Simultaneous Estimation of Natural Active Constituents Andrographolide and Piperine by UV Method.
Abstract: A simple, accurate, precise, and robust UV-Visible spectrophotometric method was developed and validated for the simultaneous estimation of Andrographolide and Piperine in bulk and combined pharmaceutical dosage forms. Preformulation studies confirmed favorable physicochemical properties for both drugs, including acceptable solubility profiles, melting points, pH values, and partition coefficients. The method development involved determination of λmax values at 224 nm for Andrographolide and 288 nm for Piperine using ethanol as solvent. …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 12, Issue 3, 2025 · pp. 33–41 Read article
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Mirabilis Jalapa Flower Extract as Natural Food Dye and Green Cellular Delivery of Nanoparticles
Abstract: Use of artificial colouring agents in sweets and packed food has become a common scenario now a day, which pose serious consequences in consumers especially children. Various studies around the globe reported the serious health hazards of artificial food dyes which include organ damage of liver, kidney and lungs thereby affecting metabolic enzymes, serum creatine and urea levels and brain damage resulting in neurotoxicity and even behavioural deficits in children. …
Published in Research & Reviews: A Journal of Drug Design & Discovery · Vol. 8, Issue 2, 2023 · pp. 27–34 Read article
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Physicochemical Characteristics of Different Brands of Edible Oil Available in Bangladesh
Abstract: Physicochemical properties like moisture content, density, smoke point, acid value (AV), peroxide value (PV), saponification value, iodine value were analyzed using standard methods and vitamin E by spectrophotometry to evaluate the quality of edible oils and also to select good quality oils among various brands of edible oils available in the local market of Bangladesh. In the study twelve brands of different oils were purchased from local market of Dhaka …
Published in Research & Reviews : Journal of Food Science & Technology · Vol. 7, Issue 3, 2018 · pp. 12–16 Read article
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Advances in Analytical Techniques for Water Quality Assessment
Abstract: Assessing the quality of water is essential for preserving ecological balance and public health. This study evaluates new developments in analytical methods that are meant to improve the accuracy, effectiveness, and reach of water quality monitoring. While fundamental, conventional procedures like spectrophotometry and chromatography have drawbacks in terms of sensitivity and real-time capability. By allowing quick and precise pollutant and contaminant identification, emerging technologies such as sensor networks, remote sensing, …
Published in International Journal of Environmental Noise and Pollution Control · Vol. 2, Issue 1, 2024 · pp. 1–7 Read article
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Historical Development and Potentiality of LED-fluorimeter
Abstract: Pulsed LED-fluorimetry is a highly sensitive, versatile, and well-documented field technique for the direct determination of uranium in water samples at the μgL-1 levels. Pulsed LED-fluorimetry has been utilized to assess uranium in a variety of matrices, including mineralized rocks, ores, beneficiation products, and other matrices, without the need for any kind of separation method. Using the high sensitivity of pulsed LED-fluorimetry, interferences from related and auxiliary elements are removed …
Published in Research & Reviews : Journal of Physics · Vol. 13, Issue 1, 2024 · pp. 14–21 Read article
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Physico-Chemical Assessment of River Benue to Determine Pollution Levels Using Chemometric Models.
Abstract: The effects of pollution on water have been reviewed. This study is aimed at determining the level of pollution of the River Benue, with the view of assessing its use as potable water. Different analytical techniques including titrimetry, gravimetry, potentiometry, and spectrophotometry were used for the study. The total hardness gave (22.28 mg/L and 41.87 mg/L) for dry and rainy season respectively. Electrical conductivity gave (91.35 mg/L and 54.10 mg/L) …
Published in International Journal of Pollution: Prevention & Control · Vol. 2, Issue 2, 2024 · pp. 43–76 Read article
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Sustainable Innovations in Green Nanotechnology for Nanoparticle Synthesis
Abstract: Green nanotechnology is an emerging field that focuses on the environmentally friendly production of nanoparticles through biological and sustainable processes. This approach has diverse applications across industries such as pharmaceuticals, energy, electronics, and bioengineering. Compared to conventional methods, biologically driven nanoparticle synthesis, particularly utilizing green chemistry principles, offers a safer, eco- friendly, non-toxic, and cost-effective alternative. Metal nanoparticles are commonly synthesized through top-down and bottom-up strategies using physical, chemical, and …
Published in International Journal of Photochemistry and Photochemical Research · Vol. 3, Issue 1, 2025 · pp. 31–37 Read article
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Novel Amino Silanes for Inhibition and Dissolution of Aldol Polymer for Caustic Tower in Cracker Plant
Abstract: Aldol polymer fouling in petrochemical plant is an undesirable process, which needs to be removed for increasing the efficiency of downstream process. In this paper, inhibition and dissolution efficiency of the aminopropyl trimethoxy silane (APTMS), aminopropyl triethoxy silane (APTES), sodium salt of aminopropyl trimethoxy silane (SS-APTMS), sodium salt of aminopropyl triethoxy silane (SS-APTES) were studied at different molar ratio of vinyl acetate (VA):amino alkoxy silane (antipolymerant). The sodium salt of …
Published in Journal of Petroleum Engineering & Technology · Vol. 15, Issue 1, 2025 · pp. 35–48 Read article