Analytical Chemistry of Complex Matrices PDF Download

Author:
Publisher: Springer-Verlag
ISBN: 3322871827
Category : Science
Languages : de
Pages : 227

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Author: Serban C. Moldoveanu
Publisher: Elsevier
ISBN: 0128037113
Category : Science
Languages : en
Pages : 600

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Selection of the HPLC Method in Chemical Analysis serves as a practical guide to users of high-performance liquid chromatography and provides criteria for method selection, development, and validation. High-performance liquid chromatography (HPLC) is the most common analytical technique currently practiced in chemistry. However, the process of finding the appropriate information for a particular analytical project requires significant effort and pre-existent knowledge in the field. Further, sorting through the wealth of published data and literature takes both time and effort away from the critical aspects of HPLC method selection. For the first time, a systematic approach for sorting through the available information and reviewing critically the up-to-date progress in HPLC for selecting a specific analysis is available in a single book. Selection of the HPLC Method in Chemical Analysis is an inclusive go-to reference for HPLC method selection, development, and validation. - Addresses the various aspects of practice and instrumentation needed to obtain reliable HPLC analysis results - Leads researchers to the best choice of an HPLC method from the overabundance of information existent in the field - Provides criteria for HPLC method selection, development, and validation - Authored by world-renowned HPLC experts who have more than 60 years of combined experience in the field

Author: Thomas J. Bruno
Publisher: CRC Press
ISBN: 1351613154
Category : Science
Languages : en
Pages : 900

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Researchers in chemistry, chemical engineering, pharmaceutical science, forensics, and environmental science make routine use of chemical analysis, but the information these researchers need is often scattered in different sources and difficult to access. The CRC Handbook of Basic Tables for Chemical Analysis: Data-Driven Methods and Interpretation, Fourth Edition is a one-stop reference that presents updated data in a handy format specifically designed for use when reaching a decision point in designing an analysis or interpreting results. This new edition offers expanded coverage of calibration and uncertainty, and continues to include the critical information scientists rely on to perform accurate analysis. Enhancements to the Fourth Edition: Compiles a huge array of useful and important data into a single, convenient source Explanatory text provides context for data and guidelines on applications Coalesces information from several different fields Provides information on the most useful "wet" chemistry methods as well as instrumental techniques, with an expanded discussion of laboratory safety Contains information of historical importance necessary to interpret the literature and understand current methodology. Unmatched in its coverage of the range of information scientists need in the lab, this resource will be referred to again and again by practitioners who need quick, easy access to the data that forms the basis for experimentation and analysis.

Author: Rafael Lucena
Publisher: Elsevier
ISBN: 0128221720
Category : Science
Languages : en
Pages : 573

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Analytical Sample Preparation With Nano- and Other High-Performance Materials covers advanced sample treatment techniques and the new materials that can be used to boost their performance. The evolution of sample treatment over the last two decades has resulted in the development of new techniques and application of new materials. This is a must-have resource for those studying advanced analytical techniques and the role of high-performance materials in analytical chemistry. The book explains the underlying principles needed to properly understand sample preparation, and also examines the latest materials - including nanomaterials - that result in greater sensitivity and specificity. The book begins with a section devoted to all the various sample preparation techniques and then continues with sections on high-performance sorbents and high-performance solvents. - Combines basic, fundamental principles and advanced concepts and applications for a comprehensive treatment of sample preparation with new materials - Defines nano- and other high-performance materials in this context, including carbon nanoparticles, inorganic nanoparticles, ionic liquids, supramolecular solvents, and more - Includes discussion of all the latest advancements and new findings in both techniques and materials used for proper sample preparation

Author: Marcello Locatelli
Publisher: MDPI
ISBN: 3039367862
Category : Technology & Engineering
Languages : en
Pages : 224

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In the field of Analytical Chemistry and, in particular, whenever a quali-quantitative analysis is required, until a few years ago, reference was made exclusively to instrumental methods (more or less hyphenated) which, once validated, were able to provide the answers to the questions present, even if only in a limited way to analytical targets. Nowadays, the landscape has become considerably complicated (natural adulterants, assessment of geographical origin, sophistication, need for non-destructive analysis, search for often unknown compounds), and new procedures for processing data have greatly increased the potential of analyses that are conducted (even routinely) in the laboratory. In this scenario, chemometrics is master, able to manage and process a huge amount of information based both on data relating only to the analytes of interest, but also by applying “general” procedures to process raw untargeted analysis data. It is within this strand of analysis that many of the works reported in this Special Issue fall. In the succession of works in this printed version, the criterion that guided us was to highlight how—starting exclusively from chromatographic techniques (HPLC and GC) with conventional detectors and moving to exclusively spectroscopic techniques (MS, FT-IR and Raman)—it is possible arrive at extremely powerful coupled techniques and procedures (HPLC and FT-IR) able to meet research needs. Finally, at the end of the printed volume, there are two reviews that surveying the state of the art regarding the assessment of authenticity through qualitative analyses and the application of chemometrics in the pharmaceutical field in the study of forced drug degradation products. From the succession of works (and, above all, from the various application fields) it can immediately be seen how the application of chemometrics and its procedures to both raw and processed data is a powerful means of obtaining robust, reproducible, and predictive information. In this manner, it is possible to create models able to explain and respond to the original problem in a much more detailed way. , and Honghe through Fourier transform mid infrared (FT-MIR) spectra combined with partial least squares discriminant analysis (PLS-DA), random forest (RF), and hierarchical cluster analysis (HCA) methods. Melucci and collaborators apply chemometric approaches to non-destructive analysis of ATR-FT-IR for the determination of biosilica content. This value was directly evaluated in sediment samples, without any chemical alteration, using attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy, and the quantification was performed by combining the multivariate standard addition method (MSAM) with the net analyte signal (NAS) procedure to solve the strong matrix effect of sediment samples. Still in the food and food supplements field, Anguebes-Franseschi and collaborators report an article where 10 chemometric models based on Raman spectroscopy were applied to predict the physicochemical properties of honey produced in the state of Campeche, Mexico.

Author: Arian van Asten
Publisher: Elsevier
ISBN: 0128207213
Category : Science
Languages : en
Pages : 576

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Chemical Analysis for Forensic Evidence provides readers with the fundamental framework of forensic analytical chemistry, describing the entire process, from crime scene investigation to evidence sampling, laboratory analysis, quality aspects, and reporting and testifying in court. In doing so, important principles and aspects are demonstrated through the various forensic expertise areas in which analytical chemistry plays a key role, including illicit drugs, explosives, toxicology, fire debris analysis and microtraces such as gunshot residues, glass and fibers. This book illuminates the underlying practical framework that governs how analytical chemistry is used in practice by forensic experts to solve crime. Arian van Asten utilizes a hands-on approach with numerous questions, examples, exercises and illustrations to help solidify key concepts and teach them in an engaging way. - Provides a forensic analytical chemistry framework based on how professionals actually use chemistry to solve crimes - Introduces leading principles necessary to forensic practice understanding - Answers key questions with a wealth of illustrations and real-world examples

Author: W. Franklin Smyth
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Marcello Locatelli
Publisher: MDPI
ISBN: 3039365770
Category : Medical
Languages : en
Pages : 162

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The availability (and the development) of innovative approaches to quantitative analyses and the data processing are often mandatory to deeply characterize a sample and to correctly highlight the analytical target. These objectives are carried out either by simply improving a single aspect of the analytical protocol or by developing a synergy of steps (from extraction to instrumental configuration to chemometric approaches) to obtain the maximum analytical information sought. Examples are innovative extraction protocols (also following the recent guidelines on green analytical chemistry) or new materials for the selective extraction of target compounds, multi-analytes screening methods, and "untargeted" approaches for food applications. In this text, the various articles are attributable to these elements, in particular, we start with a multi-analyte method for the determination of 10 different cannabinoids from Cannabis sativa L. by means of conventional techniques (Mandrioli and coworkers), to then see the application of techniques hyphenated "ultra-fast" by UPLC-MS for the authentication of food products (Xue and coworkers). The work of Song and coworkers on these applications in food products is also interesting, as it highlights how the collection process (and the timing of this passage) can affect the chemical profile and, consequently, the biological activity of Panax ginseng. Mocan and coworkers, applying an innovative extraction technique based on microwaves and applying well-known, robust, and easy-to-use instrumentation, have demonstrated how it is possible to discriminate between various species of Galium and how the chemical profiles obtained can support the biological activities observed. Similarly, but with the aim of developing new sample pretreatment procedures, Maggira and collaborators have developed graphene oxide-based materials for the selective extraction of sulfonamides in milk. Shen and coworkers apply a different type of approach, the "untargeted" one, for the geographical characterization of the Gentian Rigescens for which they combine chemometric techniques for the processing of raw chemical profile data. Wang and coworkers report a multiclass screening of drugs with high-resolution mass spectrometry through which they manage to obtain a high-scale, fast screening method for pesticides in fishery drugs based on ultrahigh-performance liquid chromatography tandem quadrupole-orbitrap high-resolution mass spectrometer.

Author: Marco Aurélio Zezzi Arruda
Publisher: Nova Publishers
ISBN: 9781600211188
Category : Science
Languages : en
Pages : 318

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Micro Sampling for Solid and Slurries Analytical Methods; Microwave-assisted Procedures for Sample Preparation: Recent Developments; Trends in Sample Preparation using Combustion Techniques; Sample Preparation of Atmospheric Aerosols for Elemental Analysis and Fractionation Studies; Extraction and Pre-Concentration Techniques for Chromatographic Analysis; Strategies in Sample Preparation for Applications in Analytical Electrochemistry In-Line Sample Preparation in Flow Analysis; The Role of Vanguard-Rearguard Strategies in Sample Preparation in Routine AnaIytical Laboratories; Strategies for Sample Preparation Focusing on Biomolecules Determination/Characterization.

Author: Regina Duarte
Publisher: Elsevier
ISBN: 0128188960
Category : Science
Languages : en
Pages : 314

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Multidimensional Analytical Techniques in Environmental Research is a comprehensive resource on the many multidimensional analytical strategies to qualitatively and quantitatively assess and map the organic and inorganic pollutants in complex atmospheric, water and soil matrices. During the past two decades, the rapidly-evolving field of analytical instrumentation has produced sophisticated multidimensional tools capable of providing unique and in-depth knowledge on the chemical features of complex mixtures from these different environmental matrices. This book brings together the wealth of information in the current literature, assisting in the decision-making process by covering both the fundamentals and applications of these methodologies. Sections cover the wide variety of multidimensional analytical techniques, including multidimensional solution- and solid-state nuclear magnetic resonance (NMR) spectroscopy, ultrahigh-resolution mass spectrometry (MS), two-dimensional correlation spectroscopy, two-dimensional liquid and gas chromatography and capillary electrophoresis coupled to high-resolution detection techniques, and excitation-emission (EEM) fluorescence spectroscopy assisted by multiway data analysis tools, and the use of synchrotron-radiation-based techniques combined with other spectroscopic approaches to explore and map the speciation of elements.