Advances In Chemical Analysis Procedures Part I

Author : Marcello Locatelli
Publisher : MDPI
ISBN 13 : 3039365770
Total Pages : 162 pages
Book Rating : 4.77/5 ( download)

DOWNLOAD NOW!

Download or read book Advances in Chemical Analysis Procedures (Part I) written by Marcello Locatelli and published by MDPI. This book was released on 2020-12-02 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : D. L. Sparks
Publisher : John Wiley & Sons
ISBN 13 : 0891188258
Total Pages : 1424 pages
Book Rating : 4.54/5 ( download)

DOWNLOAD NOW!

Download or read book Methods of Soil Analysis, Part 3 written by D. L. Sparks and published by John Wiley & Sons. This book was released on 2020-01-22 with total page 1424 pages. Available in PDF, EPUB and Kindle. Book excerpt: A thorough presentation of analytical methods for characterizing soil chemical properties and processes, Methods, Part 3 includes chapters on Fourier transform infrared, Raman, electron spin resonance, x-ray photoelectron, and x-ray absorption fine structure spectroscopies, and more.

Author : Marcello Locatelli
Publisher : MDPI
ISBN 13 : 3039367862
Total Pages : 224 pages
Book Rating : 4.63/5 ( download)

DOWNLOAD NOW!

Download or read book Advances in Chemical Analysis Procedures (Part II) written by Marcello Locatelli and published by MDPI. This book was released on 2021-01-20 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Marcello Locatelli
Publisher :
ISBN 13 : 9783039365784
Total Pages : 162 pages
Book Rating : 4.89/5 ( download)

DOWNLOAD NOW!

Download or read book Advances in Chemical Analysis Procedures (Part I) written by Marcello Locatelli and published by . This book was released on 2020 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Wilfred W. Scott
Publisher :
ISBN 13 :
Total Pages : 948 pages
Book Rating : 4.76/5 ( download)

DOWNLOAD NOW!

Download or read book Standard Methods of Chemical Analysis written by Wilfred W. Scott and published by . This book was released on 1917 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Marcello Locatelli
Publisher :
ISBN 13 : 9783039367870
Total Pages : 224 pages
Book Rating : 4.70/5 ( download)

DOWNLOAD NOW!

Download or read book Advances in Chemical Analysis Procedures (Part II) written by Marcello Locatelli and published by . This book was released on 2020 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the field of Analytica ...

Author : Wilfred Welday Scott
Publisher :
ISBN 13 :
Total Pages : 1018 pages
Book Rating : 4.28/5 ( download)

DOWNLOAD NOW!

Download or read book Standard Methods of Chemical Analysis written by Wilfred Welday Scott and published by . This book was released on 1925 with total page 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Ottavia Giuffrè
Publisher : Frontiers Media SA
ISBN 13 : 2889669785
Total Pages : 177 pages
Book Rating : 4.83/5 ( download)

DOWNLOAD NOW!

Download or read book Advances in Analytical Techniques and Methodology for Chemical Speciation Study written by Ottavia Giuffrè and published by Frontiers Media SA. This book was released on 2021-07-05 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Wilfred Welday Scott
Publisher : Franklin Classics Trade Press
ISBN 13 : 9780344347931
Total Pages : 780 pages
Book Rating : 4.31/5 ( download)

DOWNLOAD NOW!

Download or read book Standard Methods of Chemical Analysis written by Wilfred Welday Scott and published by Franklin Classics Trade Press. This book was released on 2018-10-27 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Author : Wilfred Welday Scott
Publisher : Franklin Classics
ISBN 13 : 9780342752058
Total Pages : 768 pages
Book Rating : 4.57/5 ( download)

DOWNLOAD NOW!

Download or read book Standard Methods of Chemical Analysis written by Wilfred Welday Scott and published by Franklin Classics. This book was released on 2018-10-13 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.