Approaches to Drug Sample Differentiation PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Approaches to Drug Sample Differentiation PDF full book. Access full book title Approaches to Drug Sample Differentiation by Juei H. Liu. Download full books in PDF and EPUB format.
Author: Juei H. Liu
Publisher:
ISBN:
Category : Chemistry, Forensic
Languages : en
Pages : 92
Get Book Here
Book Description
Author: Juei H. Liu
Publisher:
ISBN:
Category : Chemistry, Forensic
Languages : en
Pages : 92
Get Book Here
Book Description
Author: JH. Liu
Publisher:
ISBN:
Category : Analytical chemistry
Languages : en
Pages : 5
Get Book Here
Book Description
Differentiation of drug samples can be based on at least three different approaches. Conventional methods use qualitative and quantitative determinations of impurities or minor components. Samples may also be differentiated by variations in a naturally occurring isotope such as carbon-13, whose content varies because of differences of carbon fixation conditions for cultivated plant drugs or from differences in reaction conditions for synthesized drugs. A third approach involves the determination of various diastereoisomeric or enantiomeric compositions or both. This last approach also serves an essential purpose in cases where one isomer is under regulation while other(s) may not be. Representative works are reviewed.
Author: JH. Liu
Publisher:
ISBN:
Category : Amphetamine
Languages : en
Pages : 8
Get Book Here
Book Description
Synthesized tris[d,d-dicampholylmethanato]europium(III), Eu(dcm)3, and three other commercially available chiral lanthanide shift reagents are used to resolve the nuclear magnetic resonance (NMR) spectra of the enantiomeric N-CH3 and C-CH3 protons in d- and l-methamphetamine. The chemical shift difference between the corresponding enantiomeric protons induced by these four shift reagents are compared and evaluated in their prospective use for enantiomeric identification and determination. It is concluded that while the chemical shift difference between the two enantiomerie C-CH3 protons induced by Eu(dcm)3 is most suitable for qualitative identification of these enantiomers, the NMR spectra of the N-CH3 protons are best resolved by Eu(dcm)3 and most suitable for quantitative determinations.
Author: Ashraf Mozayani
Publisher: Springer Science & Business Media
ISBN: 159259946X
Category : Medical
Languages : en
Pages : 307
Get Book Here
Book Description
A comprehensive and easy-to-read introduction to the work of the modern forensic laboratory. The authors explain in simple language the capabilities and limitations of modern forensic laboratory procedures, techniques, analyses, and interpretations. Here, the interested reader will find an understandable and fascinating introduction to the complex worlds of forensic serology DNA, chemistry, crime reconstruction, digital evidence, explosives, arson, fingerprints, firearms, tool marks, odontology, and pathology. Additional chapters address the problems of assuring quality and seeking trace evidence in the forensic laboratory.
Author: JH. Liu
Publisher:
ISBN:
Category : Amphetamine
Languages : en
Pages : 10
Get Book Here
Book Description
A gas chromatograph/mass spectrometer (GC/MS) system equipped with a chiral and an achiral capillary column is used to analyze control methamphetamine, an illicit methamphetamine preparation ("White Cross"), and a simulated illicit methamphetamine synthesis product. Samples are derivatized with N-trifluoroacetyl-l-prolyl chloride (I-TPC) before the GC/MS analysis. The results obtained lead to the conclusion that the resolution on an achiral column is adequate for the determination of methamphetamine enantiomers and impurities, providing the enantiomeric impurity of the l-TPC is known. Four new possible by-products of methamphetamine preparations were identified in the simulated illicit methamphetamine synthesis product.
Author: Danilo Arnone
Publisher: Frontiers Media SA
ISBN: 2889747670
Category : Medical
Languages : en
Pages : 120
Get Book Here
Book Description
Author: Richard Saferstein
Publisher: Prentice Hall
ISBN:
Category : Law
Languages : en
Pages : 488
Get Book Here
Book Description
Collection of articles written by experts in the forensic science area. Volume III has an emphasis on DNA research. Book is intended for the professional/graduate audience.
Author:
Publisher:
ISBN:
Category : Drug abuse
Languages : en
Pages : 768
Get Book Here
Book Description
Author: Ray H. Liu
Publisher: CRC Press
ISBN: 142009498X
Category : Law
Languages : en
Pages : 506
Get Book Here
Book Description
The analysis of drugs and their metabolites in biological media are now expected to routinely achieve 20% accuracy in the ng/mL concentration level. Therefore, the availability and the selection of quality ion-pairs designating the analytes and their isotopically labeled analogs (ILAs) are important considerations in achieving the accuracy of qua
Author: Anssi Roiha
Publisher: John Catt
ISBN: 1398382906
Category : Education
Languages : en
Pages : 281
Get Book Here
Book Description
Differentiation is an approach to education in which every student's individuality and special needs are taken into account. Practical and accessible, HOW TO SUCCEED IN DIFFERENTIATION reveals the approach taken in the high-achieving Finnish education system, where the national curriculum obligates all teachers to differentiate their teaching from the get-go. The book is divided into four parts. Part I explains the background of Finnish education and differentiation in the Finnish context. Part II investigates the theoretical basis for differentiation and strives to offer new perspectives for the most common challenges of differentiation. In addition, Part II introduces the reader to the imaginary example students, whose problems are attempted to be solved later in the book. In Part III, differentiation is approached through the five-dimensional model of differentiation, which the authors have created and which, in their opinion, covers the most central areas of teaching, in which differentiation should be acknowledged. In Part IV, differentiation is exemplified in language and literature, mathematics and foreign languages.
