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Ink Analysis Using A Combination Of Thin Layer Chromatography Tlc And Surface Enhanced Raman Spectroscopy Sers Techniques
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Book Synopsis Ink Analysis Using a Combination of Thin Layer Chromatography (TLC) and Surface-enhanced-Raman -spectroscopy (SERS) Techniques by : Mashael Khaled Algareeb
Download or read book Ink Analysis Using a Combination of Thin Layer Chromatography (TLC) and Surface-enhanced-Raman -spectroscopy (SERS) Techniques written by Mashael Khaled Algareeb and published by . This book was released on 2015 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Novel Analytical Methods with the Aim of Forensic Analyte Detection Using Ultra-thin Layer Chromatography, Surface Enhanced Raman Spectroscopy, and Magneto-elastic Wire Sensing by : Nichole Ann Crane
Download or read book Development of Novel Analytical Methods with the Aim of Forensic Analyte Detection Using Ultra-thin Layer Chromatography, Surface Enhanced Raman Spectroscopy, and Magneto-elastic Wire Sensing written by Nichole Ann Crane and published by . This book was released on 2016 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this dissertation is to develop analytical methods that aid in the detection of forensic analytes. Forensic analytes require methods with increased sensitivity and low limit of detection capabilities. Improvements in separation techniques, surface enhanced Raman spectroscopic techniques, and wire-less gas sensing can each assist in the detection of trace evidence. When surface enhanced Raman is coupled with thin-layer chromatography a mixture of compounds can be separated and transferred to a metal substrate to be detected using Raman spectroscopy. Surface enhanced Raman scattering enhances the Raman signal intensity by placing a metal substrate in close proximity to an analyte. The new method gives a chemically specific intensified signal along with a chromatographic separation. A traditional separation is performed on a TLC plate, allowed to dry, wetted with a solvent, placed in contact with a metal substrate, and detected using Raman. More efficient chromatographic platforms can be implemented with this method. New efficient chromatographic platforms are also beneficial to the detection of forensic analytes. Recently, photolithographically nanofabricated open system pillar arrays have proved to be more efficient separation platforms when compared to traditional TLC. These platforms are a form of ultra-thin layer chromatography. This dissertation describes the effects of manipulation on the inter-pillar gap distances with respect to band dispersion. The studies herein manipulate the pillar arrays in order to optimize the separation platform. The third method developed involved gas sensing of volatile organic compounds. An amorphous ferromagnetic micro-wire was coated with a polymer, where the polymer swelled in response to the gas introduced. When the gas caused the polymer to swell a differential stress response was applied on the micro-wire. The fabricated sensor was tested on simple organic gases but has capabilities to detect low concentrations of low vapor pressure forensic analytes. All three projects were significant advancements in analytical method development. The analytes used were either fluorescent dyes or volatile organic compounds to test feasibility of each method. More efficient chromatographic platforms were fabricated, surface enhanced Raman was coupled to TLC, and a micro-wire gas sensor was calibrated for the studies performed in this dissertation.
Book Synopsis Advances in Chromatography by : Nelu Grinberg
Download or read book Advances in Chromatography written by Nelu Grinberg and published by CRC Press. This book was released on 2017-12-12 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: For more than five decades, scientists and researchers have relied on the Advances in Chromatography series for the most up-to-date information on a wide range of developments in chromatographic methods and applications. For Volume 55, established, well-known chemists offer cutting-edge reviews of chromatographic methods to pay tribute to the late Eli Grushka, beloved series editor, who inspired and mentored many in the field of separation science. The clear presentation of topics and vivid illustrations for which this series has become known makes the material accessible and engaging to analytical, biochemical, organic, polymer, and pharmaceutical chemists at all levels of technical skill.
Book Synopsis Infrared and Raman Spectroscopy in Forensic Science by : John M. Chalmers
Download or read book Infrared and Raman Spectroscopy in Forensic Science written by John M. Chalmers and published by John Wiley & Sons. This book was released on 2012-01-03 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will provide a survey of the major areas in which information derived from vibrational spectroscopy investigations and studies have contributed to the benefit of forensic science, either in a complementary or a unique way. This is highlighted by examples taken from real case studies and analyses of forensic relevance, which provide a focus for current and future applications and developments.
Book Synopsis Leading Edge Techniques in Forensic Trace Evidence Analysis by : Robert D. Blackledge
Download or read book Leading Edge Techniques in Forensic Trace Evidence Analysis written by Robert D. Blackledge and published by John Wiley & Sons. This book was released on 2022-09-29 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leading Edge Techniques in Forensic Trace Evidence Analysis In-depth exploration of the latest methodologies, tools, and techniques for analyzing trace evidence In Leading Edge Techniques in Forensic Trace Evidence Analysis, distinguished and highly qualified contributors cover the significant advances in methodology and instruments that are now being used to analyze trace evidence in forensic laboratories, including new techniques used to determine authenticity of objects and artifacts (such as Combined Raman/LIBS Microscopy) and those used to analyze surface treatments (such as py-GC-PARCI-MS). The work also covers new evidence types, such as surface-modified fibers, microscopic particles, and shimmer, and provides detailed explanations and practical examples of all of the aforementioned topics. Among the topics covered are: Forensic analysis of shimmer particles in cosmetics samples, glitter and other flake pigments, and x-ray photoelectron spectroscopy Surface acoustic wave nebulization mass spectrometry, forensic applications of gas chromatography vacuum ultraviolet, and spectroscopy paired with mass spectrometry Density determination and separation via magneto-Archimedes levitation and elemental imaging of forensic traces with macro and micro XRF Characterization of human head hairs via proteomics and Raman and surface-enriched Raman scattering (SERS) for trace analysis With detailed explanations of modern methodologies, tools, techniques, and evidence types in trace evidence forensics, along with helpful guidance to put covered concepts into practice, Leading Edge Techniques in Forensic Trace Evidence Analysis serves as an invaluable hands-on reference for scientists in forensic laboratories worldwide.
Book Synopsis Chemical Analysis in Cultural Heritage by : Luigia Sabbatini
Download or read book Chemical Analysis in Cultural Heritage written by Luigia Sabbatini and published by Walter de Gruyter GmbH & Co KG. This book was released on 2020-02-24 with total page 587 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical Analysis provides non invasive and micro-analytical techniques for the investigation of cultural heritage materials. The tools and techniques, discussed by experts in the field, are of universal, sensitive and multi-component nature.
Book Synopsis Surface Enhanced Raman Scattering: New Theoretical Approaches, Materials and Strategies by : Ivano Alessandri
Download or read book Surface Enhanced Raman Scattering: New Theoretical Approaches, Materials and Strategies written by Ivano Alessandri and published by Frontiers Media SA. This book was released on 2020-03-25 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of Ballpoint Pen Inks by Diffuse Reflectance Infrared Spectrometry by : RA. Merrill
Download or read book Analysis of Ballpoint Pen Inks by Diffuse Reflectance Infrared Spectrometry written by RA. Merrill and published by . This book was released on 1992 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary method for the analysis of inks is thin-layer chromatography (TLC), which only permits comparison of dye components. Studies have been done on the usefulness of diffuse reflectance (DR) with Fourier transform infrared (FT-IR) spectrometry, using a direct deposit sampling technique for the analysis of ballpoint pen inks. This technique allows screening of a composite ink as a whole, including its dye components, resins, and other additives. A total of 184 ink samples were analyzed by FT-IR, and searchable spectral libraries were created of both whole and extracted inks. The results indicate that the additional information provided by the DR analysis, combined with the complementary information from the TLC analysis, provides enhanced value to the forensic examination of inks.
Book Synopsis Handbook of Analytical Techniques for Forensic Samples by : Chaudhery Mustansar Hussain
Download or read book Handbook of Analytical Techniques for Forensic Samples written by Chaudhery Mustansar Hussain and published by Elsevier. This book was released on 2020-11-28 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Analytical Techniques for Forensic Samples: Current and Emerging Developments discusses in detail the current trends and latest analytical techniques and methods commonly employed in forensic analysis in order to ensure the proper facilitation of justice. This book is useful for readers who wish to stay updated on the latest trends in the forensic analysis of samples encountered at crime scenes. Technological advancements, such as biosensors, nanotechnology, and taggant technology have upped the level of analysis in forensic science. These emergent technologies, incorporated with existing analytical techniques, are leading to more precise, accurate, and specific examination of forensic samples. Lab-on-a-chip technology has also eased several kinds of on-site analyses done by investigating teams at different types of crime scenes. This book covers the evolution of forensic sample analysis as well as these emerging trends and new technologies. Includes an entire section of experimental exercises for self-teaching and key concept review Covers laboratory protocols used in forensic science laboratories for the analysis of various samples through different analytical techniques Condenses the many aspects of forensic analytical chemistry into a single resource with easy-to-understand language for everyone from students to practitioners
Book Synopsis Nanoscience and Nanomaterials for the Knowledge and Conservation of Cultural Heritage by : Luca Tortora
Download or read book Nanoscience and Nanomaterials for the Knowledge and Conservation of Cultural Heritage written by Luca Tortora and published by Frontiers Media SA. This book was released on 2020-12-30 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Book Synopsis Applications of the Newer Techniques of Analysis by : Ivor L. Simmons
Download or read book Applications of the Newer Techniques of Analysis written by Ivor L. Simmons and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a group of selected papers given at the November, 1972, meeting of the Eastern Analytical Symposium. As has always been the intent of the series, "Progress in Analytical Chemistry," the papers are written by authorities who are also active workers in their fields. Included are applications of Raman Spectroscopy, X-Ray Diffraction, Emission Spectroscopy, Nu clear Magnetic Resonance, Liquid Chromatography, Thin-Layer Chromatography, Pyrolysis Gas Chromatography, Mass Spectrometry, Gas Chromatography and the powerful marriage of the last two. In modern analysis there is a constant search for applications of existing instrumentation in new ways to produce results hitherto unobtainable. In every case both the versatility of the researcher and the flexibility of the method used are amply illustrated. Thanks are due to the authors of the papers for their efforts in coping with the many problems of producing a manuscript in finished form enabling rapid publication. Ivor L. Simmons Galen W. Ewing v CONTENTS Raman Spectroscopy for the Study of Nematic Liquid Crystals . . . . . . 1 Bernard J. Bulkin Recent Developments in Arc Emission Spectroscopy: Introductory Remarks . . . . . . . . . . 13 Ramon M. Barnes Advances in the Static-Argon, DC-ARC Spectrochemical Source . . • . . 23 W. A. Gordon, K. M. Hambidge, and M. L. Franklin The Use of Calculated X-ray Powder Patterns in the Interpretation of Quantitative Analysis 45 C. Clark, D. K. Smith, and G. G. Johnson, Jr.
Book Synopsis Multivariate Profiling of Gel Inks by : Graham Reed
Download or read book Multivariate Profiling of Gel Inks written by Graham Reed and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The gel ink pen is the fastest growing pen class available on the modern market. Consequently, its prevalence in forensic casework is expected to increase. This poses a challenge to forensic scientists, since the chemistry of gel inks differ to other commonly encountered inks, thus discrimination by traditional methods like Thin Layer Chromatography (TLC) is limited and a new analytical methodology is required for distinguishing different formulations effectively. A study to evaluate discriminating potential of modern spectroscopic techniques alongside traditional methods of ink examination for within and between brand variations of two commonly encountered colours was undertaken. Within brand variation was detected between multiple samples of a limited number of inks using filtered light, FTIR-ATR and specifically Raman Spectroscopy. For 31 blue gel inks, a discriminating power of at least 0.93 was achieved using a combined analytical sequence of TLC, filtered light (IR absorption and IR fluorescence), Vis-MSP (transmittance), FTIR-ATR and Raman Spectroscopy (514.5 nm, 685 nm, 785 nm and 830 nm combined). A discriminating power of 0.98 was achieved for 25 red gel inks using a combination of TLC, filtered light (IR fluorescence only), FTIR-ATR and Raman Spectroscopy (785 nm only). Hybrid gel inks were readily identified using solubility testing, TLC and Raman Spectroscopy combined, with 92% of red inks tested found to contain both dyes and pigments. A library of Raman spectra from 200 known pigments was compiled and CI Pigment Blue 15:1 and 15:3, and Pigment Red 112 and 254 identified as likely colour components of several blue and red gel inks respectively. An objective multivariate statistical methodology incorporating peak selection, data binning and normalisation was developed and successfully applied to both IR and Raman Spectroscopic data. Hierarchical Cluster Analysis (HCA) and Self-Organising Feature Maps (SOFM) were more effective than Principal Component Analysis (PCA) for successful clustering.
Book Synopsis Surface-Enhanced Vibrational Spectroscopy by : Ricardo Aroca
Download or read book Surface-Enhanced Vibrational Spectroscopy written by Ricardo Aroca and published by John Wiley & Sons. This book was released on 2006-05-01 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface Enhanced Vibrational Spectroscopy (SEVS) has reached maturity as an analytical technique, but until now there has been no single work that describes the theory and experiments of SEVS. This book combines the two important techniques of surface-enhanced Raman scattering (SERS) and surface-enhanced infrared (SEIR) into one text that serves as the definitive resource on SEVS. Discusses both the theory and the applications of SEVS and provides an up-to-date study of the state of the art Offers interpretations of SEVS spectra for practicing analysts Discusses interpretation of SEVS spectra, which can often be very different to the non-enhanced spectrum - aids the practicing analyst
Book Synopsis Analysis of Drugs in Thin Films Using Surface Enhanced Raman Spectroscopy to Evaluate Their Detection in Latent Fingerprint Residues by : Caitlin R. Izzo
Download or read book Analysis of Drugs in Thin Films Using Surface Enhanced Raman Spectroscopy to Evaluate Their Detection in Latent Fingerprint Residues written by Caitlin R. Izzo and published by . This book was released on 2015 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface-enhanced Raman spectroscopy was used to analyze thin films containing low levels of four drugs in order to determine the limit of detection for this technique.
Book Synopsis Direct Analysis in Real Time Mass Spectrometry by : Yiyang Dong
Download or read book Direct Analysis in Real Time Mass Spectrometry written by Yiyang Dong and published by John Wiley & Sons. This book was released on 2018-04-09 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clear, comprehensive, and state of the art, the groundbreaking book on the emerging technology of direct analysis in real time mass spectrometry Written by a noted expert in the field, Direct Analysis in Real Time Mass Spectrometry offers a review of the background and the most recent developments in DART-MS. Invented in 2005, DART-MS offers a wide range of applications for solving numerous analytical problems in various environments, including food science, forensics, and clinical analysis. The text presents an introduction to the history of the technology and includes information on the theoretical background, for exampleon the ionization mechanism. Chapters on sampling and coupling to different types of mass spectrometers are followed by a comprehensive discussion of a broad range of applications. Unlike most other ionization methods, DART does not require laborious sample preparation, as ionization takes place directly on the sample surface. This makes the technique especially attractive for applications in forensics and food science. Comprehensive in scope, this vital text: -Sets the standard on an important and emerging ionization technique -Thoroughly discusses all the relevant aspects from instrumentation to applications -Helps in solving numerous analytical problems in various applications, for example food science, forensics, environmental and clinical analysis -Covers mechanisms, coupling to mass spectrometers, and includes information on challenges and disadvantages of the technique Academics, analytical chemists, pharmaceutical chemists, clinical chemists, forensic scientists, and others will find this illuminating text a must-have resource for understanding the most recent developments in the field.
Book Synopsis Surface-Enhanced Vibrational Spectroscopy by : Ricardo Aroca
Download or read book Surface-Enhanced Vibrational Spectroscopy written by Ricardo Aroca and published by John Wiley & Sons. This book was released on 2006-05-15 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface Enhanced Vibrational Spectroscopy (SEVS) has reachedmaturity as an analytical technique, but until now there has beenno single work that describes the theory and experiments of SEVS.This book combines the two important techniques of surface-enhancedRaman scattering (SERS) and surface-enhanced infrared (SEIR) intoone text that serves as the definitive resource on SEVS. * Discusses both the theory and the applications of SEVS andprovides an up-to-date study of the state of the art * Offers interpretations of SEVS spectra for practicinganalysts * Discusses interpretation of SEVS spectra, which can often bevery different to the non-enhanced spectrum - aids the practicinganalyst
Book Synopsis Crystallizing Ideas – The Role of Chemistry by : Ponnadurai Ramasami
Download or read book Crystallizing Ideas – The Role of Chemistry written by Ponnadurai Ramasami and published by Springer. This book was released on 2016-06-29 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twenty-three carefully selected, peer-reviewed contributions from the International Conference on Pure and Applied Chemistry (ICPAC 2014) are featured in this edited book of proceedings. ICPAC 2014, a biennial meeting, was held in Mauritius in June 2014. The theme of the conference was “Crystallizing Ideas: The Role of Chemistry” and it matched the declaration of the year 2014 as the International Year of Crystallography. ICPAC 2014 was attended by 150 participants from 30 countries. The chapters in this book reflect a wide range of fundamental and applied research in chemistry and interdisciplinary subjects. Crystallizing Ideas - The Role of Chemistry is written for graduates, postgraduates, researchers in industry and academia who have an interest in the fields ranging from fundamental to applied chemistry.
