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1.1 This practice covers procedures for measuring and reporting the performance of Fourier-transform nuclear magnetic resonance spectrometers (FT-NMRs) using liquid samples. 1.2 This practice is not directly applicable to FT-NMR spectrometers outfitted to measure gaseous,...
1.1 Carbon-13 Nuclear Magnetic Resonance Spectroscopy (13C NMR) measures the primary hydroxyl content of ethylene oxide (EO)-propylene oxide (PO) polyether polyols used in preparing flexible polyurethane foams. This method is best suited for polyether polyols with primary hydroxyl contents...
This specification covers virgin poly(L-lactic acid) resin (PLLA resin) intended for use in surgical implants. This specification does not cover stereoisomeric compositions based on various D, L, or DL copolymer ratios. This specification addresses material characteristics of virgin poly(L-lactic...
The isolation and structural characterization of substances present at very low concentrations, as is necessary to satisfy regulatory requirements for pharmaceutical drug degradants and impurities, can present scientific challenges. The coupling of HPLC with NMR spectroscopy has been at the...
Published in 1989: The short history of medical use of NMR is given. A brief introduction to the fundamental principles of NMR and the strategies of creating NMR image, as well as the exposure levels of various types of fields involved, are given. Authors: Bertil Persson,...
5.1 Methyl hydrogen content is a key characteristic of hydrocarbon lubricating oils and can affect a variety of properties of the oil including its boiling range, viscosity, low temperature flow, and oxidation stability. 5.2 The NMR procedure does not require calibration standards of known...
This document specifies a relative method for the determination of polypropylene (PP) isotactic index by low-resolution pulsed nuclear magnetic resonance spectroscopy (LR-NMR). This method enables the identification and coding of types H propylene (PP-H) plastics according to ISO 19069-1....
5.1 The identification of pigments in a sample of liquid paint or paint film is often important for regulatory purposes. Many inorganic pigments or extenders utilized in past paint formulation are now regulated by federal, state, or municipal health authorities. XRF is one of the more common and...
Here is an abundance of valuable information on different sensing techniques for fruits and vegetables. The volume covers emerging technologies, such as NMR, MRI, wireless sensor networks (WSN), and radio-frequency identification (RFID) and their potential for industrial applications. Key...
The authors travel with the reader through the challenging maze of structure determination, showing how to distinguish between valuable and deceiving data from IR, NMR and MS spectra, extracting structural conclusions and putting all the pieces together to solve the structure elucidation...
NMR is a technique that can spoil you. It is true that it is not as sensitive as some of the spectroscopic methods, but the quality of the information and the incredible ease of sample preparation make it one of the tools that have opened new vistas in biological research. This volume is...
This test method covers the determination of the hydrogen content of middle distillate petroleum products using a low-resolution pulsed nuclear magnetic resonance (NMR) spectrometer. The boiling range of distillates covered by the test method is 150 °C to 390 °C. While this test method may...
1.1 This test method covers the determination of the hydrogen content of middle distillate petroleum products using a low-resolution pulsed nuclear magnetic resonance (NMR) spectrometer. The boiling range of distillates covered by the test method is 150 °C to 390 °C. While this test method...
Written as a quick reference to the many different concepts and ideas encountered in chemistry, Basic Chemical Concepts and Tables presents important subjects in a concise format that makes it a practical resource for any reader. The author covers multiple subjects including general chemistry,...
Purpose. A Design Release Engineer (DRE) has the option to specify proper cure on; the drawing, Statement of Requirements (SOR) or Component Technical Specification (CTS), using Dynamic Mechanical Analyzer (DMA)/Dynamic Mechanical Thermal Analyzer (DMTA), Nuclear Magnetic Resonance (NMR) or...
Keeping mathematics to a minimum, this book introduces nuclear properties, nuclear screening, chemical shift, spin-spin coupling, and relaxation. It is one of the few books that provides the student with the physical background to NMR spectroscopy from the point of view of the whole of the...
1.1 This test method covers the determination of the degree of deacetylation in chitosan and chitosan salts intended for use in biomedical and pharmaceutical applications as well as in Tissue Engineered Medical Products (TEMPs) by high-resolution proton NMR (1H NMR). A guide for the...
Features Discusses recent insights into the nature of mechanisms of important catalytic transformations achieved on the basis of NMR and EPR spectroscopic data Considers simple and readily available spectroscopic techniques Addresses basics of nuclear magnetic and electron spin resonance...
Provides a comprehensive description of mass spectrometry basics, applications, and perspectives Mass spectrometry is a modern analytical technique, allowing for fast and ultrasensitive detection and identification of chemical species. It can serve for analysis of narcotics, counterfeit medicines,...
This test method covers the determination of the degree of deacetylation in chitosan and chitosan salts intended for use in biomedical and pharmaceutical applications as well as in Tissue Engineered Medical Products (TEMPs) by highresolution proton NMR (1H NMR). A guide for the...
