Download or read book Evaluation of Chromatographic Systems Using Green Chemistry Metrics and Development of Molecular Imprinted Sorbents written by Brian N. Fitch and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation explores applying green chemistry principles to analytical separation and sampling techniques. Green chemistry principles focus on methods to reduce the emissions and waste produced from reactions and chemical related techniques. The principles also encourage the replacement of hazardous or toxic compounds with benign chemicals and solvents whenever possible. In analytical chemistry, this typically means reducing the usage of organic solvent or using separation techniques that do not use hazardous solvents. Green chemistry metrics will be used to determine the greenness of reversed phase high performance liquid chromatography (HPLC) and supercritical fluid chromatography (SFC) for the separation of pharmaceutical compounds. Common solvents such as acetonitrile and alcohols such as methanol, ethanol, and isopropanol are explored in both chromatographic systems. Life cycle analysis (LCA) and the Analytical Method Greenness Score (AMGS) calculator are utilized as metrics to grade the separations and determine which portions of the separations produced the most emissions. In particular, the relationship between instrument energy consumption, organic solvent usage, and separation time is explored. These are also explored for both the preparative scale and analytical scale. The influence of chromatographic conditions for SFC, such as flow rate and higher back pressure, are shown to improve the greenness for this technique. The potential of SFC to be a greener alternative method than acetonitrile-containing HPLC conditions is shown for a variety of pharmaceutical separations. In addition to chromatographic parameters, electricity sources were explored to show how the relationship between the greenness for HPLC and SFC changes with the greenness of the energy source mix. The high impact of instrument energy for analytical systems shows the importance of reducing instrument run time and not focusing on mobile phase solvents alone. This is particularly true for SFC due to the additional instrumentation required to pressurize carbon dioxide. As energy mixes are likely to become greener over time and less reliant on energy sources, such as coal, the future changes in greenness is explored by using several regional energy mixes. A green renewable energy source is also utilized as a suitable ideal energy source for comparison of HPLC and SFC. The use of a very green energy source significantly reduces the impact from instrument energy consumption and improves the relationship between SFC and HPLC. Finally, electrospun nanofiber solid phase microextraction (SPME) sorbents are molecularly imprinted with two polysulfide malodor compounds. These sulfur compounds are detectable at very low concentrations by humans and are possible side products from the fermentation process of beer. Epoxy and carbon nanofibers are utilized to extract both polysulfide compounds from the headspace of standard solutions. The molecularly imprinted sorbents possess enhanced selectivity for the template compound with the lowest improvement being 18%. The selectivity of the imprint was also shown by using a compound similar to the template, such as dimethyl trisulfide, to compete with the template compound, dimethyl disulfide. The robustness of the imprint is shown as there was little decrease in extraction efficiency after 50 injections.

Download or read book Mip Synthesis Characteristics and Analytical Application written by and published by Elsevier. This book was released on 2019-08-09 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mip Synthesis, Characteristics and Analytical Application, Volume 86 in the Comprehensive Analytical Chemistry series, highlights advances in the field, with this new volume presenting interesting chapters on synthesis and polymerization techniques of molecularly imprinted polymers, Solid phase extraction technique as a general field of application of molecularly imprinted polymer materials, Advanced artificially receptor- based sorbents for solid phase extraction using molecular imprinting technology: a new trend in food analysis, Application of molecularly imprinted polymers in microextraction and solventless extraction techniques, Magnetic molecularly imprinted microspheres – analytical approach, Surface Imprinted Micro- and Nanoparticles, and much more. Contains a valuable source of information on the wide spectrum of application fields of molecularly imprinted polymers as a green sorption medium Describes the application potential of currently molecular imprinting technologies, associated with the solid phase extraction techniques, magnetic imprinted microspheres, sorbents in mass spectrometry, and imprinted polymer electrochemical sensors

Download or read book Green Analytical Chemistry written by Justyna Płotka-Wasylka and published by Springer. This book was released on 2019-08-02 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book explains the principles and fundamentals of Green Analytical Chemistry (GAC) and highlights the current developments and future potential of the analytical green chemistry-oriented applications of various solutions. The book consists of sixteen chapters, including the history and milestones of GAC; issues related to teaching of green analytical chemistry and greening the university laboratories; evaluation of impact of analytical activities on the environmental and human health, direct techniques of detection, identification and determination of trace constituents; new achievements in the field of extraction of trace analytes from samples characterized by complex composition of the matrix; “green” nature of the derivatization process in analytical chemistry; passive techniques of sampling of analytes; green sorption materials used in analytical procedures; new types of solvents in the field of analytical chemistry. In addition green chromatography and related techniques, fast tests for assessment of the wide spectrum of pollutants in the different types of the medium, remote monitoring of environmental pollutants, qualitative and comparative evaluation, quantitative assessment, and future trends and perspectives are discussed. This book appeals to a wide readership of the academic and industrial researchers. In addition, it can be used in the classroom for undergraduate and graduate Ph.D. students focusing on elaboration of new analytical procedures for organic and inorganic compounds determination in different kinds of samples characterized by complex matrices composition.Jacek Namieśnik was a Professor at the Department of Analytical Chemistry, Gdańsk University of Technology, Poland. Justyna Płotka-Wasylka is a teacher and researcher at the same department.

Download or read book Food Authentication and Traceability written by Charis M. Galanakis and published by Academic Press. This book was released on 2020-11-19 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food Authenticity and Traceability covers the most recent trends and important topics in food authentication, with an emphasis on the components of a food traceability systems. The book discusses techniques such as omics-based technologies, chromatographic methods, mass spectrometry, hyperspectral and chemical imaging, molecular and DNA-based techniques, chemometrics and data mining algorithms, high-throughput sequencing, and non-targeted fingerprinting approaches and proteomics. Includes information on blockchain for food traceability analysis Discusses consumer preferences and perceptions regarding food traceability drivers and food fraud Presents approaches of authentication for food of animal origin and omics-based technologies

Download or read book Molecularly Imprinted Polymers written by B. Sellergren and published by Elsevier. This book was released on 2000-12-22 with total page 583 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is divided into 5 sections starting with an historic perspective and fundamental aspects on the synthesis and recognition by imprinted polymers. The second section contains 8 up-to-date overview chapters on current approaches to molecular and ion imprinting. This is followed by two chapters on new material morphologies and in the last two sections various analytical applications of imprinted polymers are given, with the last four chapters devoted to the promising field of imprinted polymers in chemical sensors.The authors of this volume have widely different backgrounds; mainly polymer chemistry, organic chemistry, biochemistry and analytical chemistry, which means that this book has an interdisciplinary character and should appeal to a broad audience.

Download or read book Chemical Engineering Design written by Gavin Towler and published by Elsevier. This book was released on 2012-01-25 with total page 1321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical Engineering Design, Second Edition, deals with the application of chemical engineering principles to the design of chemical processes and equipment. Revised throughout, this edition has been specifically developed for the U.S. market. It provides the latest US codes and standards, including API, ASME and ISA design codes and ANSI standards. It contains new discussions of conceptual plant design, flowsheet development, and revamp design; extended coverage of capital cost estimation, process costing, and economics; and new chapters on equipment selection, reactor design, and solids handling processes. A rigorous pedagogy assists learning, with detailed worked examples, end of chapter exercises, plus supporting data, and Excel spreadsheet calculations, plus over 150 Patent References for downloading from the companion website. Extensive instructor resources, including 1170 lecture slides and a fully worked solutions manual are available to adopting instructors. This text is designed for chemical and biochemical engineering students (senior undergraduate year, plus appropriate for capstone design courses where taken, plus graduates) and lecturers/tutors, and professionals in industry (chemical process, biochemical, pharmaceutical, petrochemical sectors). New to this edition: Revised organization into Part I: Process Design, and Part II: Plant Design. The broad themes of Part I are flowsheet development, economic analysis, safety and environmental impact and optimization. Part II contains chapters on equipment design and selection that can be used as supplements to a lecture course or as essential references for students or practicing engineers working on design projects. New discussion of conceptual plant design, flowsheet development and revamp design Significantly increased coverage of capital cost estimation, process costing and economics New chapters on equipment selection, reactor design and solids handling processes New sections on fermentation, adsorption, membrane separations, ion exchange and chromatography Increased coverage of batch processing, food, pharmaceutical and biological processes All equipment chapters in Part II revised and updated with current information Updated throughout for latest US codes and standards, including API, ASME and ISA design codes and ANSI standards Additional worked examples and homework problems The most complete and up to date coverage of equipment selection 108 realistic commercial design projects from diverse industries A rigorous pedagogy assists learning, with detailed worked examples, end of chapter exercises, plus supporting data and Excel spreadsheet calculations plus over 150 Patent References, for downloading from the companion website Extensive instructor resources: 1170 lecture slides plus fully worked solutions manual available to adopting instructors

Download or read book Green Analytical Chemistry written by Mihkel Koel and published by Royal Society of Chemistry. This book was released on 2015-11-09 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concerns about environmental pollution, global climate change and hazards to human health have increased dramatically. This has led to a call for change in chemical processes including those that are part of chemical analysis. The development of analytical chemistry continues and every new discovery in chemistry, physics, molecular biology, and materials science brings new opportunities and challenges. Yet, contemporary analytical chemistry does not consume resources optimally. Indeed, the usage of toxic chemical compounds is at the highest rate ever. All this makes the emerging field of green chemistry a “hot topic” in industrial, governmental laboratories as well as in academia. This book starts by introducing the twelve principles of green chemistry. It then goes on to discuss how the principles of green chemistry can be used to assess the ‘greenness’ of analytical methodologies. The ‘green profile’ proposed by the ACS Green Chemistry Institute is also presented. A chapter on “Greening” sample preparation describes approaches to minimizing toxic solvent use, using non-toxic alternatives, and saving energy. The chapter on instrumental methods describes existing analytical approaches that are inherently green and making non-green methods greener. The final chapter on signal acquisition describes how quantitative structure-property relationship (QSPR) ideas could reduce experimental work thus making analysis greener. The book concludes with a discussion of how green chemistry is both possible and necessary. Green Analytical Chemistry is aimed at managers of analytical laboratories but will also interest teachers of analytical chemistry and green public policy makers.

Download or read book Metal Organic Frameworks written by Victoria Samanidou and published by MDPI. This book was released on 2020-03-27 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal–organic frameworks are among the most promising novel materials. The concept of MOFs was first introduced in 1990. They were actually initially used in catalysis, gas separation, membranes, electrochemical sensors. Later on, they were introduced as SPE sorbents for PAHs (Polycyclic Aromatic Hydrocarbons) in environmental water samples, then the range expanded to the field of analytical chemistry, both in chromatographic separation and sample preparation, with great success in, e.g., SPE and SPME (Solid Phase Mico-extraction). Since then, the number of analytical applications implementing MOFs as sorbents in sorptive sample preparation approaches is increasing. Τhis is reinforced by the fact that, at least theoretically, an infinite number of structures can be designed and synthesized, thus making tuneability one of the most unique characteristics of MOF materials. Moreover, they have been designed in various shapes, such as columns, fibers, and films, so that they can meet more analytical challenges with improved analytical features.Their exceptional properties attracted the interest of analytical chemists who have taken advantage of the unique structures and properties and have already introduced them in several sample pretreatment techniques, such as solid phase extraction, dispersive SPE, magnetic solid phase extraction, solid phase microextraction, stir bar sorptive extraction, etc.

Download or read book Combinatorial Methods for Chemical and Biological Sensors written by Radislav A. Potyrailo and published by Springer Science & Business Media. This book was released on 2009-03-21 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical sensors are in high demand for applications as varied as water pollution detection, medical diagnostics, and battlefield air analysis. Designing the next generation of sensors requires an interdisciplinary approach. The book provides a critical analysis of new opportunities in sensor materials research that have been opened up with the use of combinatorial and high-throughput technologies, with emphasis on experimental techniques. For a view of component selection with a more computational perspective, readers may refer to the complementary volume of Integrated Analytical Systems edited by M. Ryan et al., entitled “Computational Methods for Sensor Material Selection”.

Download or read book Energy Efficient Solvents for CO2 Capture by Gas Liquid Absorption written by Wojciech M. Budzianowski and published by Springer. This book was released on 2016-12-01 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews and characterises promising single-compound solvents, solvent blends and advanced solvent systems suitable for CO2 capture applications using gas-liquid absorption. Focusing on energy efficient solvents with minimal adverse environmental impact, the contributions included analyse the major technological advantages, as well as research and development challenges of promising solvents and solvent systems in various sustainable CO2 capture applications. It provides a valuable source of information for undergraduate and postgraduate students, as well as for chemical engineers and energy specialists.

Download or read book Chemical Analysis of Food Techniques and Applications written by Yolanda Pico and published by Academic Press. This book was released on 2012-09-01 with total page 813 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical Analysis of Food: Techniques and Applications reviews new technology and challenges in food analysis from multiple perspectives: a review of novel technologies being used in food analysis, an in-depth analysis of several specific approaches, and an examination of the most innovative applications and future trends. This book won a 2012 PROSE Award Honorable Mention in Chemistry and Physics from the Association of American Publishers. The book is structured in two parts: the first describes the role of the latest developments in analytical and bio-analytical techniques and the second reviews the most innovative applications and issues in food analysis. Each chapter is written by experts on the subject and is extensively referenced in order to serve as an effective resource for more detailed information. The techniques discussed range from the non-invasive and non-destructive, such as infrared spectroscopy and ultrasound, to emerging areas such as nanotechnology, biosensors and electronic noses and tongues. Important tools for problem-solving in chemical and biological analysis are discussed in detail. Winner of a PROSE Award 2012, Book: Honorable Mention in Physical Sciences and Mathematics - Chemistry and Physics from the American Association of Publishers Provides researchers with a single source for up-to-date information in food analysis Single go-to reference for emerging techniques and technologies Over 20 renowned international contributors Broad coverage of many important techniques makes this reference useful for a range of food scientists

Download or read book Handbook of Green Analytical Chemistry written by Miguel de la Guardia and published by John Wiley & Sons. This book was released on 2012-04-23 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: The emerging field of green analytical chemistry is concerned with the development of analytical procedures that minimize consumption of hazardous reagents and solvents, and maximize safety for operators and the environment. In recent years there have been significant developments in methodological and technological tools to prevent and reduce the deleterious effects of analytical activities; key strategies include recycling, replacement, reduction and detoxification of reagents and solvents. The Handbook of Green Analytical Chemistry provides a comprehensive overview of the present state and recent developments in green chemical analysis. A series of detailed chapters, written by international specialists in the field, discuss the fundamental principles of green analytical chemistry and present a catalogue of tools for developing environmentally friendly analytical techniques. Topics covered include: Concepts: Fundamental principles, education, laboratory experiments and publication in green analytical chemistry. The Analytical Process: Green sampling techniques and sample preparation, direct analysis of samples, green methods for capillary electrophoresis, chromatography, atomic spectroscopy, solid phase molecular spectroscopy, derivative molecular spectroscopy and electroanalytical methods. Strategies: Energy saving, automation, miniaturization and photocatalytic treatment of laboratory wastes. Fields of Application: Green bioanalytical chemistry, biodiagnostics, environmental analysis and industrial analysis. This advanced handbook is a practical resource for experienced analytical chemists who are interested in implementing green approaches in their work.

Download or read book Biochar for Environmental Management written by Johannes Lehmann and published by Routledge. This book was released on 2012-05-16 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biochar is the carbon-rich product when biomass (such as wood, manure or crop residues) is heated in a closed container with little or no available air. It can be used to improve agriculture and the environment in several ways, and its stability in soil and superior nutrient-retention properties make it an ideal soil amendment to increase crop yields. In addition to this, biochar sequestration, in combination with sustainable biomass production, can be carbon-negative and therefore used to actively remove carbon dioxide from the atmosphere, with major implications for mitigation of climate change. Biochar production can also be combined with bioenergy production through the use of the gases that are given off in the pyrolysis process. This book is the first to synthesize the expanding research literature on this topic. The book's interdisciplinary approach, which covers engineering, environmental sciences, agricultural sciences, economics and policy, is a vital tool at this stage of biochar technology development. This comprehensive overview of current knowledge will be of interest to advanced students, researchers and professionals in a wide range of disciplines.

Download or read book Ultra Performance Liquid Chromatography Mass Spectrometry written by Mu Naushad and published by CRC Press. This book was released on 2014-03-18 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a unique collection of up-to-date UPLC-MS/MS (ultra performance liquid chromatography-tandem mass spectrometric) methods for the separation and quantitative determination of pesticides, capsaicinoids, heterocyclic amines, aflatoxin, perfluorochemicals, acrylamide, procyanidins and alkaloids, lactose content, phenolic compounds, vitamins, and aroma and flavor compounds in a wide variety of foods and food products. With contributions by experts in interdisciplinary fields, this reference offers practical information for readers in research and development, production, and routing analysis of foods and food products.

Download or read book Advances in Psychology Research Volume 141 written by Alexandra M. Columbus and published by . This book was released on 2020-05-06 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Psychology Research. Volume 141 first summarizes the literature on social cognition and its neural correlates in children and adults with ADHD, focusing on emotion recognition, theory of mind, empathy, moral cognition and social decision-making.Following this, the authors explore the environmental/chemical-associated peripheral blood gene expression profiling of autism spectrum disorder, providing an explanation for the molecular mechanisms of environmental chemicals on autism spectrum disorder.A quantitative study is conducted to provide empirical evidence of the relationship between altruistic leader behavior and innovation success, using radical innovation as an explanatory variable.In addition, this compilation aims to validate a scale designed to measure authentic moral pride for children aged 10-16. Participants also completed an adaptation of the Empathy Index for Children and Adolescents.The authors go on to analyze three-year productivity data (2014-2016) from clinical psychologists assigned to U.S. Army behavioral health clinics to examine patient care productivity standards. A simple computational model compares standards from the Department of the Army, the Veterans Health Administration, and the Defense Health Agency.The influence of psychosocial and clinical factors, as well as insight, on attitude and adherence to medication in patients with psychosis is explored through a clinical case study.The services available for support and employment opportunities for individuals with serious mental illness are reviewed. Serious mental illness is defined as a diagnosable mental health disorder that "leads to serious functional impairment, which substantially interferes with or limits one or more major life activities".The closing study examines the main characteristics of a male Italian child molester, aged 50 years old, through a semi-structured interview based on the central child molester theories and possible intervention strategies

Download or read book Quantitative Thin Layer Chromatography written by Bernd Spangenberg and published by Springer Science & Business Media. This book was released on 2011-01-03 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin-layer chromatography (TLC) is widely used particularly for pharmaceutical and food analysis. While there are a number of books on the qualitative identification of chemical substances by TLC, the unique focus here is on quantitative analysis. The authors describe all steps of the analytical procedure, beginning with the basics and equipment for quantitative TLC followed by sample pretreatment and sample application, development and staining, scanning, and finally statistical and chemometric data evaluation and validation. An important feature is the coverage of effect-directed biological detection methods. Chapters are organized in a modular fashion facilitating the easy location of information about individual procedural steps.

Download or read book Green Solvents for Chemistry written by William M. Nelson and published by Oxford University Press. This book was released on 2003-03-27 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this book is to introduce the use of green solvents throughout chemistry and to provide a comprehensive reference for solvents currently applicable in green chemistry. The first section covers solvents in chemical perspective, and the second section is a guide to green solvents. Overall, this volume defines characteristics of green solvents and their current usage, and explores their importance ecologically and economically. It includes a full range of commercial, industrial, and academic green solvents, and discusses solvents in specific commercial and non-commercial practices. Green Solvents for Chemistry differs from other works on solvents in that only solvents for green chemistry are included along with their chemical properties and toxicological issues.