Download or read book Isotopic Analysis of Nitrogen in Ammonia by Fourier Transform Infrared Spectroscopy written by Mohamed Ali Abuzwida and published by . This book was released on 1982 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Isotopic Analysis of Nitrogen by Means of a Microwave Mass Spectrograph written by A. L. Southern and published by . This book was released on 1950 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Data Relating to the Separation of the Nitrogen Isotopes by the Exchange Reaction Between Ammonia and Solutions of Ammonium Nitrate written by Isidor Kirshenbaum and published by . This book was released on 1946 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nitrogen Isotope Analysis of Ammonium and Glycine written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Stable isotope techniques can be used as a tool in nitrogen cycling studies of different ecosystems. The studies are based on measurement of the heavy (15N)- to- light (14N) isotopic ratios of nitrogen in different biospheric pools. Isotope ratio mass spectrometry (IRMS) is the most precise technique to use for analysis of nitrogen isotopic ratios. This thesis deals with the development of methods for compound-specific nitrogen isotope analysis of ammonium and glycine in aqueous solutions and soil extracts using Gas Chromatography - Combustion (GC-C) - IRMS. For ammonium, three different techniques were developed: equilibrium headspace analysis, solid phase microextraction (SPME) and the purge and trap (P & T) technique, which were all based on conversion of ammonium to ammonia with subsequent separation of ammonia for analysis. In the SPME and P & T approaches, custom-made absorbents were used for pre-concentration, followed by thermal desorption into the GC-C-IRMS system. For the equilibrium headspace technique, high precision measurements of the nitrogen isotopic ratio were obtained for concentrations above 420 mg N L-1. With further improvements and the use of suitable equipment, the method has the potential to be used for solutions containing ammonium in the low mg N L-1 range. The SPME technique increased the sensitivity by a factor of » 3 compared to the headspace technique, but was less precise. In addition, the NafionÒ material used for absorption showed a memory effect in the desorption step. With the P & T technique a large variation in the measured isotopic value was observed (using solutions containing 2 mg N L-1) which was due to a non-quantitative thermal desorption. However, with further improvements, the P & T technique has the potential to be used for samples containing below 1.0 µg N, which is a much lower amount than that possible with any method used today. A method for determination of the nitrogen isotopic ratio in free glycine in soil extract

Download or read book Masters Theses in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States and Canada written by Wade H. Shafer and published by Springer. This book was released on 1984-02-01 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This series lists applicable thesis titles published in the United States and Canada. Volume 40 covers thesis year 1995. All back volumes are still available.

Download or read book Nitrogen Isotope Analysis of Ammonium and Glycine written by Elin Norlin and published by . This book was released on 2005 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2726 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Isotopic Characterisation of Atmospheric Nitrous Oxide by Fourier Transform Infrared Spectroscopy written by Federico Turatti and published by . This book was released on 2001 with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book BS ISO 23468 Determination of Heavy Water Isotopic Purity by Fourier Transform Infrared Spectroscopy written by British Standards Institution and published by . This book was released on 2020 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physics Briefs written by and published by . This book was released on 1994 with total page 1146 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Isotopic Studies on Biological Nitrogen Fixation written by Jack William Newton and published by . This book was released on 1952 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1974 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spectroscopic Properties of Inorganic and Organometallic Compounds written by G Davidson and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectroscopic Properties of Inorganic and Organometallic Compounds provides a unique source of information on an important area of chemistry. Divided into sections mainly according to the particular spectroscopic technique used, coverage in each volume includes: NMR (with reference to stereochemistry, dynamic systems, paramagnetic complexes, solid state NMR and Groups 13-18); nuclear quadrupole resonance spectroscopy; vibrational spectroscopy of main group and transition element compounds and coordinated ligands; and electron diffraction. Reflecting the growing volume of published work in this field, researchers will find this Specialist Periodical Report an invaluable source of information on current methods and applications. Specialist Periodical Reports provide systematic and detailed review coverage in major areas of chemical research. Compiled by teams of leading experts in their specialist fields, this series is designed to help the chemistry community keep current with the latest developments in their field. Each volume in the series is published either annually or biennially and is a superb reference point for researchers.

Download or read book ASME Technical Papers written by and published by . This book was released on with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Paper written by and published by . This book was released on 1990 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of the Chemical Society written by and published by . This book was released on 1991 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: