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Author : Jack Nowicki
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (53 download)
Download or read book Analysis of Fire Debris Samples by Gas Chromatography/mass Spectrometry (GC-MS). written by Jack Nowicki and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jack Nowicki
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (53 download)
Download or read book Analysis of Fire Debris Samples by Gas Chromatography/mass Spectrometry (GC-MS). written by Jack Nowicki and published by . This book was released on 1991 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Eric Stauffer
Publisher : Academic Press
ISBN 13 : 0080556264
Total Pages : 683 pages
Book Rating : 4.0/5 (85 download)
Download or read book Fire Debris Analysis written by Eric Stauffer and published by Academic Press. This book was released on 2007-12-10 with total page 683 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of fire debris analysis is vital to the function of all fire investigations, and, as such, Fire Debris Analysis is an essential resource for fire investigators. The present methods of analysis include the use of gas chromatography and gas chromatography-mass spectrometry, techniques which are well established and used by crime laboratories throughout the world. However, despite their universality, this is the first comprehensive resource that addresses their application to fire debris analysis. Fire Debris Analysis covers topics such as the physics and chemistry of fire and liquid fuels, the interpretation of data obtained from fire debris, and the future of the subject. Its cutting-edge material and experienced author team distinguishes this book as a quality reference that should be on the shelves of all crime laboratories. Serves as a comprehensive guide to the science of fire debris analysis Presents both basic and advanced concepts in an easily readable, logical sequence Includes a full-color insert with figures that illustrate key concepts discussed in the text
Author : Anthony Thomas Parks
Publisher :
ISBN 13 : 9780438372801
Total Pages : 43 pages
Book Rating : 4.3/5 (728 download)
Download or read book A Survey on the Interpretive GC/MS Analysis of Fire Debris written by Anthony Thomas Parks and published by . This book was released on 2018 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: The practice of arson analysis in a forensic science laboratory is based upon detecting the presence of ignitable liquids. If an ignitable liquid is present, it is suggestive of arson; if no ignitable liquid is found an arson claim is more difficult to assert. Ignitable liquids are detected using gas chromatography coupled with mass spectrometry. Instrumental results from a GC/MS can display components of an ignitable liquid but an analyst needs to make the final decision. Even with correct instrumentation and suggested guidelines, ignitable liquid analysis can be subjective and based upon the analysts' education and experience. To better understand the interpretive practices of the fire debris analysis community, a survey consisting of reference samples, mixture standards, and multiple unknowns was created in consultation with the Los Angeles Police Department Arson Unit. The samples consisted of different substrates with varying classes and volumes of ignitable liquid. They were created using a destructive distillation method first developed by the State of Florida Bureau of Forensic Fire and Explosives Analysis. Extraction of the samples was completed using a carbon strip to perform passive headspace absorption following the ASTM E 1412 method. The samples were analyzed with a GC/MS following National Commission on Forensic Science parameters. To maintain confidentiality, participant responses are stripped of identifiers and the results of the survey, details about the procedure, and discussions will be presented.
Author : Betty-Jane De Vos
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (956 download)
Download or read book Gas Chromatography Coupled with Ion Trap Mass Spectrometry (GC-MS and GC-MS-MS) - for Arson Debris Analysis written by Betty-Jane De Vos and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas chromatography - mass spectrometry (GC-MS) is an established instrumental technique used for the analysis of fire debris for accelerant detection. However, matrix problems, such as pyrolysis product interference, are still encountered. These interferences often lead to inconclusive interpretation of the chromatographic results. This study describes methods for analysing arson accelerants using gas chromatography coupled with ion trap mass spectrometry. The latter technique lends itself to both conventional (GC-MS) as well as tandem mass spectrometry (GC-MS-MS). Since petrol (gasoline) is one of the more common distillate blends used by arsonists, especially in South Africa, the identification of petrol in fire debris samples was investigated. In order to overcome pyrolysis product interference and improve detection selectivity of the aromatic hydrocarbons in petrol residues, tandem mass spectrometry was used in combination with capillary gas chromatography. The added parameter of the third dimension of selectivity proved to be superior to conventional GC-MS in obtaining characteristic aromatic hydrocarbon profiles for petrol without interference from pyrolysis artefacts.
Author : Jehuda Yinon
Publisher : CRC Press
ISBN 13 : 0203998286
Total Pages : 300 pages
Book Rating : 4.2/5 (39 download)
Download or read book Advances in Forensic Applications of Mass Spectrometry written by Jehuda Yinon and published by CRC Press. This book was released on 2003-12-29 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent developments in analytical instrumentation have had an enormous influence on forensic analysis. The mass spectrometer is now an integral part of every forensic laboratory, resulting in greater analytical accuracy, more reliable identification, and lower detection limits. As the instrumental method of choice among forensic analysts, the mass
Author : Matthew Kevin Green
Publisher :
ISBN 13 :
Total Pages : 33 pages
Book Rating : 4.:/5 (932 download)
Download or read book Liquid Chromatography-tandem Mass Spectrometry of Fire Debris Evidence at Suspected Clandestine Methamphetamine Laboratories written by Matthew Kevin Green and published by . This book was released on 2014 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: The "One-Pot" methamphetamine production method involves the combination and use of highly reactive and flammable materials. Individuals attempting this method are creating clandestine laboratories within residences and other occupied structures, and the likelihood of a subsequent fire puts anyone nearby at risk. In the State of Oklahoma, if the production of methamphetamine causes a fire, the crime falls under the first degree arson statute, which can involve a prison sentence of 35 years, as opposed to 7 years for the production of drugs. The ability to detect methamphetamine and the One-Pot precursors in fire debris would strengthen the arson investigation. One-Pot methamphetamine reactions were carried out and the liquid and solid products were used to recreate a fire. Small burn cells were used to represent a residential environment. Several fire debris sample types were collected, including wall wipe samples, burned bottles, wood, and carpet. Each sample was analyzed for ignitable liquids using headspace extraction and gas chromatography-mass spectrometry (GC/MS). Following arson analysis, liquid chromatography-tandem mass spectrometry (LC-MS/MS) was used to detect methamphetamine and pseudoephedrine, the methamphetamine precursor, in the fire debris. Additionally, fire debris samples were provided to local law enforcement and GC/MS was also able to detect methamphetamine in the fire debris. This work demonstrates that fire debris analysis can prove the presence of clandestine methamphetamine laboratories that result in arson fires.
Author : Jack Nowicki
Publisher :
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (55 download)
Download or read book Automated Data Analysis of Fire Debris Samples Using Gas Chromatography-mass Spectrometry and Macro Programming written by Jack Nowicki and published by . This book was released on 1993 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jack Nowicki
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (53 download)
Download or read book Addendum to Automated Data Analysis of Fire Debris Samples Using Gas Chromatography-mass Spectrometry and Macro Programming written by Jack Nowicki and published by . This book was released on 1994 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : B-J. de Vos
Publisher :
ISBN 13 :
Total Pages : 21 pages
Book Rating : 4.:/5 (125 download)
Download or read book Detection of Petrol (Gasoline) in Fire Debris by Gas Chromatography/Mass Spectrometry/Mass Spectrometry (GC/MS/MS) written by B-J. de Vos and published by . This book was released on 2002 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas chromatography/mass spectrometry (GC/MS) is a well-known instrumental technique used for the analysis of fire debris for accelerant detection. However, matrix problems, such as pyrolysis product interference, are still encountered. These interferences often lead to inconclusive interpretation of the chromatographic results obtained.
Author : Jeanet Hendrikse
Publisher : Academic Press
ISBN 13 : 0128043873
Total Pages : 143 pages
Book Rating : 4.1/5 (28 download)
Download or read book Identifying Ignitable Liquids in Fire Debris written by Jeanet Hendrikse and published by Academic Press. This book was released on 2015-10-05 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: Identifying Ignitable Liquids in Fire Debris: A Guideline for Forensic Experts discusses and illustrates the characteristics of different ignitable liquid products. This guideline builds on the minimum criteria of the ignitable liquid classes defined in the internationally accepted standard ASTM E1618 Standard Test Method for Ignitable Liquid Residues in Extracts from Fire Debris Samples by Gas Chromatography-Mass Spectrometry. The volume provides information on the origin of the characteristics of these ignitable liquid products and provides a summary of characteristics to demonstrate a positive identification of the particular product class. Topics such as the term ignitable liquid, relevant guidelines for fire debris analysis, production processes of ignitable liquids, fire debris analysis methods, and interferences in fire debris analysis, are briefly discussed as these topics are essential for the understanding of the identification and classification of ignitable liquid residues in fire debris. Discusses the characteristics and variations in chemical composition of different classes of the ignitable liquid products defined by ASTM E1618:14 Covers the General Production Processes of Ignitable Liquid Products Includes a guide for the Identification of Ignitable Liquids in Fire Debris
Author : Kelly M. McHugh
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.:/5 (729 download)
Download or read book Determining the Presence of an Ignitable Liquid Residue in Fire Debris Samples Utilizing Target Factor Analysis written by Kelly M. McHugh and published by . This book was released on 2010 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current fire debris analysis procedure involves using the chromatographic patterns of total ion chromatograms, extracted ion chromatograms, and target compound analysis to identify an ignitable liquid according to the American Society for Testing and Materials (ASTM) E 1618 standard method. Classifying the ignitable liquid is accomplished by a visual comparison of chromatographic data obtained from any extracted ignitable liquid residue in the debris to the chromatograms of ignitable liquids in a database, i.e. by visual pattern recognition. Pattern recognition proves time consuming and introduces potential for human error. One particularly difficult aspect of fire debris analysis is recognizing an ignitable liquid residue when the intensity of its chromatographic pattern is extremely low or masked by pyrolysis products. In this research, a unique approach to fire debris analysis was applied by utilizing the samples' total ion spectrum (TIS) to identify an ignitable liquid, if present. The TIS, created by summing the intensity of each ion across all elution times in a gas chromatography-mass spectrometry (GC-MS) dataset retains sufficient information content for the identification of complex mixtures . Computer assisted spectral comparison was then performed on the samples' TIS by target factor analysis (TFA). This approach allowed rapid automated searching against a library of ignitable liquid summed ion spectra. Receiver operating characteristic (ROC) curves measured how well TFA identified ignitable liquids in the database that were of the same ASTM classification as the ignitable liquid in fire debris samples, as depicted in their corresponding area under the ROC curve. This study incorporated statistical analysis to aid in classification of an ignitable liquid, therefore alleviating interpretive error inherent in visual pattern recognition. This method could allow an analyst to declare an ignitable liquid present when utilization of visual pattern recognition alone is not sufficient.
Author : Jehuda Yinon
Publisher : CRC Press
ISBN 13 : 1000141713
Total Pages : 314 pages
Book Rating : 4.0/5 (1 download)
Download or read book Forensic Applications of Mass Spectrometry written by Jehuda Yinon and published by CRC Press. This book was released on 2020-11-25 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forensic Applications of Mass Spectrometry combines the most current developments in applications of mass spectrometry techniques to forensic analyses. The techniques discussed include: capillary-GC/MS thermospray-LC/MS tandem mass spectrometry (MS/MS) pyrolysis-GC/MS isotope ratio mass spectrometry The applications include: analysis of body fluids and hair for drugs of abuse drug testing in sports analysis of accelerants in fire debris detection of hidden explosives in luggage and mail identification of explosives in post-explosion debris examination of evidential materials (paints, fibers, synthetic polymers) authentication of regulated products (flavoring substances, fruit juices) protection of industrial products by isotopic signature
Author : Richard A. Crocombe
Publisher : John Wiley & Sons
ISBN 13 : 1119636434
Total Pages : 608 pages
Book Rating : 4.1/5 (196 download)
Download or read book Portable Spectroscopy and Spectrometry, Applications written by Richard A. Crocombe and published by John Wiley & Sons. This book was released on 2021-04-28 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most comprehensive resource available on the many applications of portable spectrometers, including material not found in any other published work Portable Spectroscopy and Spectrometry: Volume Two is an authoritative and up-to-date compendium of the diverse applications for portable spectrometers across numerous disciplines. Whereas Volume One focuses on the specific technologies of the portable spectrometers themselves, Volume Two explores the use of portable instruments in wide range of fields, including pharmaceutical development, clinical research, food analysis, forensic science, geology, astrobiology, cultural heritage and archaeology. Volume Two features contributions by a multidisciplinary team of experts with hands-on experience using portable instruments in their respective areas of expertise. Organized both by instrumentation type and by scientific or technical discipline, 21 detailed chapters cover various applications of portable ion mobility spectrometry (IMS), infrared and near-infrared (NIR) spectroscopy, Raman and x-ray fluorescence (XRF) spectroscopy, smartphone spectroscopy, and many others. Filling a significant gap in literature on the subject, the second volume of Portable Spectroscopy and Spectrometry: Features a significant amount of content published for the first time, or not available in existing literature Brings together work by authors with assorted backgrounds and fields of study Discusses the central role of applications in portable instrument development Covers the algorithms, calibrations, and libraries that are of critical importance to successful applications of portable instruments Includes chapters on portable spectroscopy applications in areas such as the military, agriculture and feed, hazardous materials (HazMat), art conservation, and environmental science Portable Spectroscopy and Spectrometry: Volume Two is an indispensable resource for developers of portable instruments in universities, research institutes, instrument companies, civilian and government purchasers, trainers, operators of portable instruments, and educators and students in portable spectroscopy courses.
Author : Ian Tebbett
Publisher : CRC Press
ISBN 13 : 0203016416
Total Pages : 198 pages
Book Rating : 4.2/5 (3 download)
Download or read book Gas Chromatography In Forensic Science written by Ian Tebbett and published by CRC Press. This book was released on 1992-10-31 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the application of gas chromatography to various aspects of forensic chemistry. Following an introduction to the basic theory of chromatographic separations, the text discusses specific issues, such as drug analysis, fires and explosives, alcohol and toxicology.
Author : D. A. Sutherland
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (53 download)
Download or read book The Analysis of Fire Debris Samples by GC/MS/MS. written by D. A. Sutherland and published by . This book was released on 1997 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kenyon Evans-Nguyen
Publisher : Springer Nature
ISBN 13 : 3030258343
Total Pages : 356 pages
Book Rating : 4.0/5 (32 download)
Download or read book Forensic Analysis of Fire Debris and Explosives written by Kenyon Evans-Nguyen and published by Springer Nature. This book was released on 2019-10-08 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text provides training on the fundamental tools and methodologies used in active forensic laboratories for the complicated analysis of fire debris and explosives evidence. It is intended to serve as a gateway for students and transitioning forensic science or chemistry professionals. The book is divided between the two disciplines of fire debris and explosives, with a final pair of chapters devoted to the interplay between the two disciplines and with other disciplines, such as DNA and fingerprint analysis. It brings together a multi-national group of technical experts, ranging from academic researchers to active practitioners, including members of some of the premier forensic agencies of the world. Readers will gain knowledge of practical methods of analysis and will develop a strong foundation for laboratory work in forensic chemistry. End-of-chapter questions based on relevant topics and real-world data provide a realistic arena for learners to test newly-acquired techniques.
