1.

Record Nr.

UNINA9911019601103321

Autore

Smith R. Martin

Titolo

Understanding mass spectra : a basic approach / / R. Martin Smith

Pubbl/distr/stampa

Hoboken, N.J., : Wiley Interscience, c2004

ISBN

9786610264872

9781280264870

128026487X

9780470252079

0470252073

9780471479345

0471479349

9780471479352

0471479357

Edizione

[2nd ed.]

Descrizione fisica

1 online resource (394 p.)

Disciplina

543/.0873

Soggetti

Mass spectrometry

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Description based upon print version of record.

Nota di bibliografia

Includes bibliographical references and index.

Nota di contenuto

UNDERSTANDING MASS SPECTRA Second Edition; CONTENTS; Preface to the Second Edition; Acknowledgments; Abbreviations and Notations Used in This Book; 1 Instrumentation; 1.1. Introduction; 1.1.1. Overview; 1.1.2. Sample Introduction; 1.2. Ionization Source; 1.2.1. Electron Ionization Source; 1.2.2. Chemical Ionization; 1.2.3. Other Ionization Methods; 1.2.3.1. Electrospray Ionization; 1.2.3.2. Desorption Ionization; 1.3. m/z Analysis; 1.3.1. Time-of-Flight (TOF); 1.3.2. Magnetic Sector; 1.3.3. Transmission Quadrupole; 1.3.3.1. Selected Ion Monitoring (SIM); 1.3.4. Quadrupole Ion Trap (QIT)

1.3.5. Other Types of Mass Analysis1.3.5.1. Mass Spectrometry/Mass Spectrometry(MS/MS); 1.3.5.2. Accurate m/z Analysis; 1.3.6. Spectral Skewing; 1.4. Ion Detection; 1.4.1. Electron Multiplier; 1.4.2. Photomultiplier Detector; 1.5. Data System; 1.5.1. Instrument Tuning and Calibration; 1.5.2. The Mass Spectrum; 1.5.2.1. Production of the Mass Spectrum; 1.5.2.2. Terminology: Ions vs. Peaks; 1.5.3. Library



Searches; 1.5.4. Using the Data System to Analyze GC/MS Data; 1.6. Criteria for Good-Quality Spectra; Additional Problems; Mass Spectrometric Resources on the Internet

References and Suggested Reading2 Elemental Composition from Peak Intensities; 2.1. Natural Isotopic Abundances; 2.1.1. Atomic and Molecular Mass; 2.1.2. Calculated Exact Masses and Mass Defects; 2.2. Determining Elemental Composition from Isotope Peak Intensities; 2.2.1. One or More Atoms of a Single Element; 2.2.1.1. Chlorine and Bromine; 2.2.1.2. Ion Designation and Nomenclature; 2.2.1.3. Probability Considerations with Multiple Numbers of Atoms; 2.2.1.4. Isotope Peak Intensity Ratios for Carbon-Containing Ions-The X + 1 Peak; 2.2.1.5. A, A + 1, and A + 2 Elements

2.2.1.6 Isotope Peak Intensity Ratios for Carbon-Containing Ions-The X + 2 Peak2.2.1.7. Overlapping Peak Clusters-Contributions from (13)C Only; 2.2.1.8. Silicon; 2.2.2. Complex Isotope Clusters; 2.2.2.1. Sulfur Dioxide; 2.2.2.2. Diazepam; 2.3. Obtaining Elemental Compositions from Isotope Peak Intensities; Examples; Additional Problems; References; 3 Ionization, Fragmentation, and Electron Accounting; 3.1. A Brief Review of Orbitals and Bonding; 3.2. Even- and Odd-Electron Species; 3.3. Site of Initial Ionization; 3.4. Types of Fragmentation; 3.5. The Nitrogen Rule

3.6. Energy Considerations in Fragmentation Processes3.6.1. Fragmentation Rates; 3.6.2. Metastable Ions; 3.6.3. Energy Diagrams; 3.6.4. Stevenson's Rule; Additional Examples; Problems; References; 4 Neutral Losses and Ion Series; 4.1. Neutral Losses; 4.1.1. Losses from the Molecular Ion; 4.1.2. Loss of Small Molecules from Aromatic Ions; 4.2. Low-Mass Ion Series; 4.2.1. n-Alkane Spectra; 4.2.2. Effect of Chain Branching on the Spectra of Aliphatic Hydrocarbons; 4.2.3. Ion Series for Nonaromatic Compounds; 4.2.4. Aromatic Ion Series; 4.2.5. Use of Ion Series: Mass Chromatograms

Additional Problems

Sommario/riassunto

Understanding Mass Spectra: A Basic Approach, Second Edition combines coverage of the principles underlying mass spectral analysis with clear guidelines on how to apply them in a laboratory setting. Completely revised from the first edition, an updated and unified approach to mass spectral interpretation emphasizes the application of basic principles from undergraduate organic, analytical, and physical chemistry courses.A detailed overview of theory and instrumentation, this useful guide contains step-by-step descriptions of interpretative strategies and convenient lists and tables detaili



2.

Record Nr.

UNINA9910799275403321

Autore

Eleonorasdotter Emma

Titolo

Women’s Drug Use in Everyday Life / / by Emma Eleonorasdotter

Pubbl/distr/stampa

Cham : , : Springer International Publishing : , : Imprint : Palgrave Macmillan, , 2024

ISBN

9783031460579

303146057X

Edizione

[1st ed. 2024.]

Descrizione fisica

1 online resource (356 pages)

Classificazione

PSY023000SOC004000SOC039000

Disciplina

362.29082

Soggetti

Drug abuse

Criminology

Crime - Sociological aspects

Critical criminology

Culture

Criminal behavior

Social psychology

Drugs

Crime and Society

Critical Criminology

Sociology of Culture

Criminal Behavior

Social Psychology

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Nota di contenuto

1. Introduction -- 2. Drugs in historical and contemporary contexts: Legal, cultural, scientific, and geographical -- Drugs and medications -- 4. Meeting points -- 5. Possessing drugs -- 6. Avoiding The Junkie -- 7. Staying appropriate -- 8. Behaving with children -- 8. Behaving with children -- 10. Appropriate drugs -- 11. Negotiating addiction -- 12. Happy using drugs? -- 13. Conclusion.

Sommario/riassunto

“This book offers a fascinating insight into the everyday lives of women who use drugs in Sweden. Adopting a queer phenomenological perspective, Dr Eleonorasdotter brings a fresh perspective to debates



about drug use and notions of ‘harm’. Well-researched and written, the book engages with gendered, classed and stigmatising constructions of women who use drugs represented in policy and practice. We are encouraged to think about what it means to be a woman who uses drugs living and working in Sweden today. An excellent addition to the literature.” -Michelle Addison, Associate Professor of Criminology, Durham University, UK "This is a thought-provoking and intelligent book, brushing aside the negativity which is continually connected with women who use any kind of mind altering substances. Eleonorasdotter is successful in challenging the one-dimensional view of using women as well as inoffering a feminist account of the lives of her respondents in the Swedish context. This is a must-read for everyone in the addiction field – users, treaters, researchers, and policymakers." -Elizabeth Ettorre, Professor of Sociology, University of Liverpool, UK. This open access book explores the everyday use of psychoactive substances in contemporary Sweden, focusing on women's use. Drawing on an ethnographic study, it uses critical theory such as queer phenomenology to analyse twelve women’s narratives of their use of drugs. The book also draws attention to the social, legal, cultural, embodied and gendered background of drugs and drug use in the contemporary global North, and how the meanings of drug use have shifted over time, with a specific focus on Sweden. It examines topics such as stigma, happiness, children, the body, gifts, the drug market, medication, sickness and health by directing attention to the women’s orientations towards objects and people, and how the women align or do not align with social and cultural norms. It discusses how drug-related spaces and directions can be analysed in terms of gender and class, and how, in turn, the directions of contemporary society and culture can be affected by drug use. It speaks to academics in Sociology, Criminology, Ethnology, Anthropology, Gender studies, Law and History. Emma Eleonorasdotter is a researcher and lecturer in Ethnology at Lund University, Sweden. She is an ethnologist and a cultural analyst interested in inequality and everyday lives, and has been part of the editorial team of the Swedish anti-racist cultural magazine Mana since 2008. .