The Kjeldahl Method For Organic Nitrogen

Author : R. B. Bradstreet
Publisher : Elsevier
Page : 248 pages
File Size : 51,9 Mb
Release : 2013-10-22
Category : Science
ISBN : 9781483258591

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The Kjeldahl Method for Organic Nitrogen by R. B. Bradstreet Pdf

The Kjeldahl Method for Organic Nitrogen volume presents a broad and comprehensive survey of the method as applied to natural products and organic nitrogen compounds. The quantitative determination of an element as widely distributed as nitrogen is of great importance, and the truth of this is borne out by the tremendous amount of literature published throughout the years. The analysis of nitrogen can be divided into two classes: inorganic and organic. This book is concerned only with organic nitrogen compounds, and specifically their determination by the Kjeldahl method. The book opens with a chapter on the historical background and the work leading to the evolution of the method. This is followed by separate chapters that discuss each of the several divisions of the method, e.g., salt addition, reduction, oxidation, catalysts, distillation.

Author : William Victor Bartholomew,Francis Eugene Clark
Publisher : Unknown
Page : 640 pages
File Size : 53,8 Mb
Release : 1965
Category : Science
ISBN : STANFORD:36105033315917

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Soil Nitrogen by William Victor Bartholomew,Francis Eugene Clark Pdf

Origin and distribution of nitrogen in soil. Soil inorganic nitrogen. Organic nitrogen in soils. Ammonium fixation and other reactions involving a nonenzymatic immobilization of mineral nitrogen in soil. Mineralization and immobilization of nitrogen in the decomposition of plant and animal residues. Nitrification. Denitrification. Symbiotic nitrogen fixation. Environmental factors in the fixation of nitrogen by the legume. Nonsymbiotic nitrogen fixation. The plant's need for and use of nitrogen. Movement of nitrogen in soil. Evaluation of incoming and outgoing processes thar affect soil nitrogen.

Author : Jaime Aguirre
Publisher : Jaime Aguirre
Page : 176 pages
File Size : 50,9 Mb
Release : 2022-02-02
Category : Biography & Autobiography
ISBN : 9780645304008

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The Kjeldahl Method: 140 Years by Jaime Aguirre Pdf

A review of the Kjeldahl method for nitrogen determination.

Author : E. P. Clark
Publisher : Elsevier
Page : 144 pages
File Size : 55,5 Mb
Release : 2013-10-22
Category : Science
ISBN : 9781483275918

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Semimicro Quantitative Organic Analysis by E. P. Clark Pdf

Semimicro Quantitative Organic Analysis focuses on the analytical phase of research and chemistry of natural products, as well as analysis of gases and methods used in identifying iodine and other substances. The manuscript first offers information on the determination of carbon, hydrogen, and nitrogen, and the use of Kjeldahl and Dumas methods in the determination of nitrogen. The book also ponders on the determination of halogens, including the use of ethanolamine-sodium, Carius, and sodium peroxide fusion methods and the Liepert volumetric method for iodine. The publication discusses the determination of sulfur and phosphorus, as well as the alkali-nitrate fusion method for converting organic phosphorus to orthophosphate and Woy's procedure for weighing phosphorus as phosphomolybdic anhydride. The text also reviews the determination of methoxyl and ethoxyl and acetyl groups; determination of neutralization equivalent and molecular weights; and determination of volatile fatty acids. The manuscript is a dependable reference for readers interested in the chemistry of natural products.

Author : Al Steyermark
Publisher : Elsevier
Page : 684 pages
File Size : 45,9 Mb
Release : 2012-12-02
Category : Science
ISBN : 9780323161367

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Quantitative Organic Microanalysis by Al Steyermark Pdf

Quantitative Organic Microanalysis, Second Edition presents the recommendations of the American Chemical Society group for specification and methods of organic microanalysis. This book is organized into 23 chapters, and starts with discussions on test samples, blank tests, second type of efficient vibration-absorbing balance table, and microchemical balances. Other general topics covered include the Kjeldahl procedures to determine nitrogen compounds; oxygen flask combustions; determination of fluorine; and microhydrogenation. The final chapters present the modification of the procedure for the determination of oxygen using gravimetry. This book will be of great value to microanalysts, researchers, and college students who wants to expand their understanding in organic microanalysis.

Author : Richard Owusu-Apenten
Publisher : CRC Press
Page : 428 pages
File Size : 44,9 Mb
Release : 2002-05-24
Category : Technology & Engineering
ISBN : 9780824744670

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Food Protein Analysis by Richard Owusu-Apenten Pdf

Ideal for planning, performing, and interpreting food protein analyses, especially as it relates to the effect of food processing on protei investigation results. Delineates basic research principles, practices, and anticipated outcomes in each of the illustrated protein assays.

Author : J. Benton Jones (Jr.)
Publisher : Unknown
Page : 92 pages
File Size : 46,6 Mb
Release : 1991
Category : Analytical chemistry
ISBN : CORNELL:31924063117943

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Kjeldahl Method for Nitrogen Determination by J. Benton Jones (Jr.) Pdf

Author : Jaime Aguirre
Publisher : Independently Published
Page : 0 pages
File Size : 43,5 Mb
Release : 2024-01-29
Category : Science
ISBN : 9798877793460

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The Kjeldahl Method by Jaime Aguirre Pdf

In 1883 Johan Kjeldahl developed a system for nitrogen determination in organic substances. Soon after its publication numerous modifications and improvements were made by different chemists. Throughout the years, thousands of different papers have been written on the process, including suggested variations, upgrades, criticisms, and reviews, and many types of devices have been designed for both the digestion and the distillation stages. Since its introduction in 1883, the Kjeldahl method has been an essential analytical tool for nitrogen determination in research, academic and industrial laboratories.

Author : Christos Tsadilas
Publisher : CRC Press
Page : 447 pages
File Size : 40,7 Mb
Release : 2022-01-03
Category : Technology & Engineering
ISBN : 9781000466881

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Nitrate Handbook by Christos Tsadilas Pdf

Nitrate Handbook: Environmental, Agricultural, and Health Effects provides an overview of the entire nitrate cycle and the processes influencing nitrate transformation. It clearly identifies the role of nitrate as an essential nutrient in plant growth, food preservation, and human health. Using the most up-to-date knowledge and research, this handbook illustrates how the steadily increasing human population and demand for food, which results in higher amounts of nitrate needed by soils, makes new regulations on the management and usage of nitrates a high priority. A detailed explanation concerning the discrepancies between the public’s perception of nitrate’s harm versus the reality of its human health benefits is given via a balanced and evidence-based approach. All questions pertaining to the influences of nitrate and its derivatives on plant physiology and human health are explored in depth. This comprehensive resource with contributions from distinguished researches in the field is a must-have for professionals and students who study and work with nitrates. Features: Includes in depth discussion on the wide spectrum of nitrate present in the environment. Focuses on the progress made on nitrate research and its importance. Answers all questions about nitrate and its derivatives’ influences on plant physiology and human health. Enables decision makers and public authorities to manage social concerns Compiles in one resource the findings of many distinguished researchers in the field.

Author : Nai-feng Chang
Publisher : Unknown
Page : 96 pages
File Size : 52,5 Mb
Release : 1931
Category : Electronic
ISBN : WISC:89086023504

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The Determination of Readily Available Nitrogen of Soils by Nai-feng Chang Pdf

Author : Richard P. Dick
Publisher : John Wiley & Sons
Page : 416 pages
File Size : 42,5 Mb
Release : 2020-01-22
Category : Technology & Engineering
ISBN : 9780891188544

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Methods of Soil Enzymology by Richard P. Dick Pdf

Methods of Soil Enzymology provides the first comprehensive set of vetted methods for studying enzymes in soils. Readers will especially benefit from the step-by-step explanation of the lab procedures, as well as background information for using these methods effectively and analyzing data. Main topics include activity assays, enzyme extraction, and synthetic enzyme complexes. Each method covered includes background informaton, step-by-step descriptions of the procedure, and special comments regarding nuances, pitfalls, and interpretation of the method. Learn the latest research methods, including enzyme extraction methods and procedures for creating synthetic enzyme complexes, as well as the newest ways to use small-scale and high-throughput methods for enzyme activity assays. Written for the researcher, but welcoming to those new to soil enzymology, the introduction includes conceptual information to orient those who are not familiar with these methods but want to use them. In the tradition of SSSA methods books, Methods of Soil Enzymology features a comprehensive approach with a focus on ease of use.

Author : Huldrych Egli
Publisher : Unknown
Page : 152 pages
File Size : 41,5 Mb
Release : 2008
Category : Food
ISBN : 303301688X

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Kjeldahl Guide by Huldrych Egli Pdf

Author : Maria Angeles Munoz,Raúl Zornoza
Publisher : Academic Press
Page : 396 pages
File Size : 51,5 Mb
Release : 2017-10-27
Category : Science
ISBN : 9780128121290

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Soil Management and Climate Change by Maria Angeles Munoz,Raúl Zornoza Pdf

Soil Management and Climate Change: Effects on Organic Carbon, Nitrogen Dynamics, and Greenhouse Gas Emissions provides a state of the art overview of recent findings and future research challenges regarding physical, chemical and biological processes controlling soil carbon, nitrogen dynamic and greenhouse gas emissions from soils. This book is for students and academics in soil science and environmental science, land managers, public administrators and legislators, and will increase understanding of organic matter preservation in soil and mitigation of greenhouse gas emissions. Given the central role soil plays on the global carbon (C) and nitrogen (N) cycles and its impact on greenhouse gas emissions, there is an urgent need to increase our common understanding about sources, mechanisms and processes that regulate organic matter mineralization and stabilization, and to identify those management practices and processes which mitigate greenhouse gas emissions, helping increase organic matter stabilization with suitable supplies of available N. Provides the latest findings about soil organic matter stabilization and greenhouse gas emissions Covers the effect of practices and management on soil organic matter stabilization Includes information for readers to select the most suitable management practices to increase soil organic matter stabilization

Author : Sharon E. Kroening
Publisher : Unknown
Page : 122 pages
File Size : 46,6 Mb
Release : 2004
Category : Earth sciences
ISBN : OSU:32435088172952

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Scientific Investigations Report by Sharon E. Kroening Pdf

Author : Stephen J. Randtke
Publisher : Unknown
Page : 276 pages
File Size : 44,9 Mb
Release : 1978
Category : Organonitrogen compounds
ISBN : UOM:39015104955565

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Soluble Organic Nitrogen Characteristics and Removal by Stephen J. Randtke Pdf