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Identification And Characterization Of Aquatic Soluble Unreactive Phosphorus In The Hydrosphere With 31 Phosphorus Fourier Transform Nuclear Magnetic Resonance Spectroscopy And High Performance Liquid Chromatography
Download Identification And Characterization Of Aquatic Soluble Unreactive Phosphorus In The Hydrosphere With 31 Phosphorus Fourier Transform Nuclear Magnetic Resonance Spectroscopy And High Performance Liquid Chromatography full books in PDF, epub, and Kindle. Read online Identification And Characterization Of Aquatic Soluble Unreactive Phosphorus In The Hydrosphere With 31 Phosphorus Fourier Transform Nuclear Magnetic Resonance Spectroscopy And High Performance Liquid Chromatography ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Identification and Characterization of Aquatic Soluble Unreactive Phosphorus in the Hydrosphere with 31-Phosphorus Fourier Transform Nuclear Magnetic Resonance Spectroscopy and High Performance Liquid Chromatography by : Mark Allen Nanny
Download or read book Identification and Characterization of Aquatic Soluble Unreactive Phosphorus in the Hydrosphere with 31-Phosphorus Fourier Transform Nuclear Magnetic Resonance Spectroscopy and High Performance Liquid Chromatography written by Mark Allen Nanny and published by . This book was released on 1994 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: The identity and characteristics of aquatic soluble phosphorus (SUP) present in a small mid-western mesotropic lake were examined with 31-Phosphorus Fourier Transform Nuclear Magnetic Resonance Spectroscopy $rm (sp{31}P$ FT-NMR) and High Performance Liquid Chromatography (HPLC). Samples were concentrated and fractionated according to molecular size using a series of ultrafiltration (UF) and reverse osmosis (RO) membranes. The UF membrane pore sizes were 30,000 Da and 1,000 Da while the RO membrane had a 95% NaCl rejection rating. The SUP was analyzed as a function of apparent molecular size and season. In the 30,000 Da retentate, monoester phosphates, diester phosphates, and phophonates were detected. In the 1,000 Da retentate, monoester and diester phosphates were seen, and in the reverse osmosis retentate, orthophosphate and monoester phosphates were detected. Seasonal changes in the monoester phosphates of the 1,000 Da retentate were detected with $rmsp{31}P$ FT-NMR and HPLC. Enhancement of the $rmsp{31}P$ FT-NMR spectral resolution and sample characterization was achieved with the use of $rm Tsb1$ relaxation agents and aqueous soluble lanthanide shift reagents. A Mississippi River sample, fractionated into a 1,000K Da retentate and a RO retentate sample, was examined with $rmsp{31}P$ FT-NMR and HPLC. The SUP in the 1,000 Da retentate sample was found to be different from the lake samples in that it contained polyphosphates and possibly phosphonates, while the RO retentate was very similar to the lake RO retentate sample. This research has also demonstrated that changes occur with the SUP in the sample during concentration by UF and RO methods. It appears the phosphorus compounds are becoming incorporated into an aggregate structure which forms during the concentration procedure. Possible identities of this aggregate structure were examined using a variety of extraction and degradation methods. Extraction of SUP with ion pairing reagents and hydrophobic resins was started to be examined as a method for further enhancing SUP characterization ability by obtaining samples free from $rmsp{31}P$ FT-NMR and HPLC interferents.
Download or read book Philosophical Transactions written by and published by . This book was released on 2002 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each issue of Transactions B is devoted to a specific area of the biological sciences, including clinical science. All papers are peer reviewed and edited to the highest standards. Published on the 29th of each month, Transactions B is essential reading for all biologists.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1995 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Philosophical Transactions of the Royal Society of London by :
Download or read book Philosophical Transactions of the Royal Society of London written by and published by . This book was released on 2002 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Elastomeric Proteins by : Royal Society (Great Britain). Discussion Meeting
Download or read book Elastomeric Proteins written by Royal Society (Great Britain). Discussion Meeting and published by . This book was released on 2002 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phosphorus-31 Fourier Transform Nuclear Magnetic Resonance Spectroscopy as a Tool for Trace Analysis of Phosphorus Compounds by : Thomas Wood Gurley
Download or read book Phosphorus-31 Fourier Transform Nuclear Magnetic Resonance Spectroscopy as a Tool for Trace Analysis of Phosphorus Compounds written by Thomas Wood Gurley and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phosphorus-31 NMR Spectroscopy in Stereochemical Analysis by : John G. Verkade
Download or read book Phosphorus-31 NMR Spectroscopy in Stereochemical Analysis written by John G. Verkade and published by . This book was released on 1987 with total page 717 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Flame Emission by : William Rudolf Seitz
Download or read book Evaluation of Flame Emission written by William Rudolf Seitz and published by . This book was released on 1973 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Phosphorus-31 Nuclear Magnetic Resonance Data (1990) by : John C. Tebby
Download or read book Handbook of Phosphorus-31 Nuclear Magnetic Resonance Data (1990) written by John C. Tebby and published by CRC Press. This book was released on 2017-11-22 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: To fully utilize Nuclear Magnetic Resonance (NMR) spectroscopy, a comprehensive and well-organized compilation of NMR data is necessary. While compilations have been available for other important NMR nuclei, such as carbon and fluorine, no comprehensive collection of data has been prepared for phosphorus-until now. The CRC Handbook of Phosphorus-31 Nuclear Magnetic Resonance Data provides a collection of 31P NMR chemical shifts for nearly 20,000 organic and inorganic phosphorus compounds. Each class of phosphorus compound is discussed. Bond types, stereochemistry (with the exception of metal complexes), media, important coupling constants, and data sources are included. The information is systematically organized according to coordination state, the atoms bound to phosphorus, and their connectivities. A comprehensive series of bar charts is also included to allow structure types to be assigned to chemical shift data. This handbook is an invaluable resource for all scientists working with phosphorus compounds, including chemists, biochemists, medical researchers, and pharmaceutical chemists.
Book Synopsis Chemical Characterization of Soluble Phosphorus Forms Along a Hydrologic Flowpath of a Forested Stream Ecosystem by :
Download or read book Chemical Characterization of Soluble Phosphorus Forms Along a Hydrologic Flowpath of a Forested Stream Ecosystem written by and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concentration and distribution of soluble phosphorus (P) forms were determined in compartments of a hydrologic pathway in a forested watershed (Walker Branch, Tennessee). Rainfall, throughfall, soil water, groundwater, stream water, and water from two sites in Melton Hill reservoir downstream of Walker Branch were examined for soluble reactive and total soluble phosphorus (SRP and TSP). Soluble unreactive P (SUP) was determined from their difference. An increase of TSP from rainfall to throughfall indicated leaching or wash off of P from the canopy. SRP and SUP decreased markedly as water percolated through the soil, suggesting biological uptake and/or geochemical adsorption of phosphate groups on soil particles. Changes in soluble P. concentrations within the stream channel supported previous evidence for biological control of P dynamics in Walker Branch. Overall, SUP (an estimate of soluble organic P) constituted a significant fraction of the total soluble P present in each compartment of the flowpath. An analytical technique using high-performance liquid chromatography (HPLC) to separate the inositol phosphates (IP's) was developed and used in characterizing organic P fractions of natural systems. Commercial orthophosphate, inositol monophosphate (IMP), and inositol hexaphosphate (IHP) were adequately separated from each other on Aminex A-27 resin using a sodium chloride/tetrasodium EDTA gradient elution. The technique was used to separate an enzyme hydrolysate mixture of IP's into five components. IHP was separated from PO4 and IMP in a wheat bran extract using the HPLC method. Alkaline bromination was used to extract IP's from a Walker Branch soil sample and HPLC was used to examine the extract; at least three IP peaks were recognized. Using the HPLC technique, an attempt was made to detect the presence of IP's in a Walker Branch groundwater sample concentration by ultrafiltration. The concentration process was unsuccessful possibly due to filtration membrane leakage, so no peaks were detected. The HPLC developmental work indicated the potential usefulness of this technique in characterizing soluble organic P compounds in natural waters, leading to the identification of the inositol phosphates.
Book Synopsis Characterization of Phosphorous in Sludges and Sludge Amended Soils Using 31p Nuclear Magnetic Resonance Spectroscopy by : Zeina R. Hinedi
Download or read book Characterization of Phosphorous in Sludges and Sludge Amended Soils Using 31p Nuclear Magnetic Resonance Spectroscopy written by Zeina R. Hinedi and published by . This book was released on 1987 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Phosphorus-31 Nuclear Magnetic Resonance Data by : John C. Tebby
Download or read book Handbook of Phosphorus-31 Nuclear Magnetic Resonance Data written by John C. Tebby and published by CRC Press. This book was released on 1990-12-26 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: To fully utilize Nuclear Magnetic Resonance (NMR) spectroscopy, a comprehensive and well-organized compilation of NMR data is necessary. While compilations have been available for other important NMR nuclei, such as carbon and fluorine, no comprehensive collection of data has been prepared for phosphorus-until now. The CRC Handbook of Phosphorus-31 Nuclear Magnetic Resonance Data provides a collection of 31P NMR chemical shifts for nearly 20,000 organic and inorganic phosphorus compounds. Each class of phosphorus compound is discussed. Bond types, stereochemistry (with the exception of metal complexes), media, important coupling constants, and data sources are included. The information is systematically organized according to coordination state, the atoms bound to phosphorus, and their connectivities. A comprehensive series of bar charts is also included to allow structure types to be assigned to chemical shift data. This handbook is an invaluable resource for all scientists working with phosphorus compounds, including chemists, biochemists, medical researchers, and pharmaceutical chemists.
Book Synopsis Analytical Chemistry of Phosphorus Compounds by : Martin M. Halmann
Download or read book Analytical Chemistry of Phosphorus Compounds written by Martin M. Halmann and published by John Wiley & Sons. This book was released on 1972 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt: The role of phosphorus in the world; Gas chromatography of phosphorus compounds; Chromatography in solution; High-resolution nuclear magnetic rosonance; Vibrational spectroscopy of phosphorus compoundds; The mass spectroscopy of phosphorus compounds; Identification and analysis of phosphate minerals; Analysis of elemental phosphorus; Tervalent phosphorus compounds; Phosphorus halides; Phosphorus oxides and oxo acids; Phosphorus - nitrogen compounds; The cyclophosphazenes; Phosphorus-sulfur compounds; Analytical methods for phosphorances; Sugar phosphates and sugar nucleotides; Phosphorus lipids; Natural carbon-phosphorus compounds; Soil phosphorus; Analysis of phosphorus compounds in natural waters.
Book Synopsis Evaluation of a Prototype Instrument for Determining Phosphorus in Water by : Thomas B. Hoover
Download or read book Evaluation of a Prototype Instrument for Determining Phosphorus in Water written by Thomas B. Hoover and published by . This book was released on 1976 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A second-generation flame spectometer for the direct determination of phosphorus in water was evaluated. Response to phosphorus in the form of phosphoric acid was linear from 0.5 to 16 ppm phosphorus. The relative standard deviation was approximately constant at 20 percent over the range. River water and municipal sewage effluent were analyzed after the addition of phosphoric acid (1.8 ppm P) and filtration through a series of microporous membranes. Recovery of the added phosphorus averaged 70 percent for the river water and 95 percent for the sewage effluent after treatment with cation exchange resin. There was no clear relation to filter pore size in the range 5 to 0.2 micrometers. Analyses of the higher range EPA Nutrient Reference Samples (approximately 0.5 ppm P) agreed within one standard deviation with the reference values, both for inorganic and total phosphorus. The lower concentration range samples (approximately 0.1 ppm P) gave barely detectable signals. Suggestions are given for further development of the instrument. -- Abstract
Book Synopsis Chemical Biomarkers in Aquatic Ecosystems by : Thomas S. Bianchi
Download or read book Chemical Biomarkers in Aquatic Ecosystems written by Thomas S. Bianchi and published by Princeton University Press. This book was released on 2011-02-28 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook provides a unique and thorough look at the application of chemical biomarkers to aquatic ecosystems. Defining a chemical biomarker as a compound that can be linked to particular sources of organic matter identified in the sediment record, the book indicates that the application of these biomarkers for an understanding of aquatic ecosystems consists of a biogeochemical approach that has been quite successful but underused. This book offers a wide-ranging guide to the broad diversity of these chemical biomarkers, is the first to be structured around the compounds themselves, and examines them in a connected and comprehensive way. This timely book is appropriate for advanced undergraduate and graduate students seeking training in this area; researchers in biochemistry, organic geochemistry, and biogeochemistry; researchers working on aspects of organic cycling in aquatic ecosystems; and paleoceanographers, petroleum geologists, and ecologists. Provides a guide to the broad diversity of chemical biomarkers in aquatic environments The first textbook to be structured around the compounds themselves Describes the structure, biochemical synthesis, analysis, and reactivity of each class of biomarkers Offers a selection of relevant applications to aquatic systems, including lakes, rivers, estuaries, oceans, and paleoenvironments Demonstrates the utility of using organic molecules as tracers of processes occurring in aquatic ecosystems, both modern and ancient
Book Synopsis Phosphorus-31 Nmr Spectral Properties in Compound Characterization and Structural Analysis by : L. D. Quin
Download or read book Phosphorus-31 Nmr Spectral Properties in Compound Characterization and Structural Analysis written by L. D. Quin and published by . This book was released on 1994-08-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phosphorus NMR of Natural Samples by : Matthew Pasek
Download or read book Phosphorus NMR of Natural Samples written by Matthew Pasek and published by Independently Published. This book was released on 2018-07-26 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: The element phosphorus is ideal for NMR analysis, due to its spin and monoisotopic composition. The analysis of natural phosphorus compounds is especially important to environmental chemistry and geology since the speciation of phosphorus hugely impacts its availability. This book is one of the first of its kind that outlines--in broad strokes--the 31P NMR chemistry of natural ions. It focuses principally on solutional chemistry, or those compounds that can be dissolved in water. Discussed here are the key ranges of chemical shift, as well as multiplicity and J coupling constants that allow for the effective identification of phosphorus compounds. Topics covered include: the natural chemistry of phosphorus, fundamentals of NMR, solvents and their effects, getting good NMR spectra with P (concentration effects), chemical shifts, coupling and coupling constants, and integration of NMR spectra. Solid state NMR is covered briefly, and several example spectra are given. For any student of phosphorus, this book will be an invaluable resource. NMR is one of the best tools to use for natural P material analysis, and this book provides all the data you need to make an accurate and quick identification of key species. Good luck!
