Download or read book Automated Colorimetric Determinatin of Nitrate nitrogen and Ammonium nitrogen in Water and Soil Samples written by Karen Barry and published by . This book was released on 1996 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Automated Colorimeteric Methods For Determination Of Nitrate Plus Nitrite Nitrite Ammonium and Orthophosphate Ions In Natural Water Samples Antweiler R C Et Al written by and published by . This book was released on 1996 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Colorimetric Determination of Nitrate Plus Nitrite in Water by Enzymatic Reduction Automated Discrete Analyzer Methods written by Charles J Patton and published by CreateSpace. This book was released on 2014-06-16 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents work at the U.S. Geological Sur- vey (USGS) National Water Quality Laboratory (NWQL) to validate enzymatic reduction, colorimetric determinative meth- ods for nitrate + nitrite in filtered water by automated discrete analysis. In these standard- and low-level methods (USGS I-2547-11 and I-2548-11), nitrate is reduced to nitrite with nontoxic, soluble nitrate reductase rather than toxic, granular, copperized cadmium used in the longstanding USGS auto- mated continuous-flow analyzer methods I-2545-90 (NWQL laboratory code 1975) and I-2546-91 (NWQL laboratory code 1979). Colorimetric reagents used to determine resulting nitrite in aforementioned enzymatic- and cadmium-reduction meth- ods are identical. The enzyme used in these discrete analyzer methods, designated AtNaR2 by its manufacturer, is produced by recombinant expression of the nitrate reductase gene from wall cress (Arabidopsis thaliana) in the yeast Pichia pastoris. Unlike other commercially available nitrate reductases we evaluated, AtNaR2 maintains high activity at 37°C and is not inhibited by high-phenolic-content humic acids at reaction temperatures in the range of 20°C to 37°C. These previously unrecognized AtNaR2 characteristics are essential for success- ful performance of discrete analyzer nitrate + nitrite assays (henceforth, DA-AtNaR2) described here.
Download or read book Methods of Soil Analysis Part 3 written by D. L. Sparks and published by John Wiley & Sons. This book was released on 2020-01-22 with total page 1424 pages. Available in PDF, EPUB and Kindle. Book excerpt: A thorough presentation of analytical methods for characterizing soil chemical properties and processes, Methods, Part 3 includes chapters on Fourier transform infrared, Raman, electron spin resonance, x-ray photoelectron, and x-ray absorption fine structure spectroscopies, and more.
Download or read book Soil and Environmental Analysis written by Keith A. Smith and published by CRC Press. This book was released on 2003-10-15 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evaluating traditional and recent analytical methods according to speed, sensitivity, and cost-efficiency, this reference supports specialists in the selection of effective analytical techniques and equipment for the study of soils, soil contaminants, and environmental samples. Updated and revised, this Third Edition illustrates the advantages, limitations, range, and challenges of the major analytical approaches utilized in modern research laboratories. It includes new chapters and expanded discussions of the measurement of organic pollutants in the environment and gas fluxes between the land surface and atmosphere, and an extensive range of environmental materials.
Download or read book Soil Sampling and Methods of Analysis written by M.R. Carter and published by CRC Press. This book was released on 2007-08-03 with total page 1264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thoroughly updated and revised, this second edition of the bestselling Soil Sampling and Methods of Analysis presents several new chapters in the areas of biological and physical analysis and soil sampling. Reflecting the burgeoning interest in soil ecology, new contributions describe the growing number and assortment of new microbiological
Download or read book Bulletin written by and published by . This book was released on 1977 with total page 1180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Methods of Soil Analysis Part 2 written by Peter J. Bottomley and published by John Wiley & Sons. This book was released on 2020-01-22 with total page 1152 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the primary references on analytical methods in soil science, Part 2 of the Methods series will be useful to all biogeoscientists, especially those with an interest in microbiology or bioremediation.
Download or read book Fertilizer Abstracts written by and published by . This book was released on 1969 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Chemical Methods written by G. E. Rayment and published by CSIRO PUBLISHING. This book was released on 2011 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes over 200 laboratory and field chemical tests relevant to Australasia and beyond.
Download or read book Advances in Nitrogen Cycling in Agricultural Ecosystems written by J. R. Wilson and published by . This book was released on 1988 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen transformation processes; The nitrogen cycle in different systems; Advances in nitrogen methodology; 15N recovery techniques in the field.
Download or read book Soil and Plant Analysis for Forest Ecosystem Characterization written by Daniel John Vogt and published by Walter de Gruyter GmbH & Co KG. This book was released on 2015-03-30 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook provides an overview of physical, chemical and biological methods used to analyze soils and plant tissue using an ecosystem perspective. The current emphasis on climate change has recognized the importance of including soil carbon as part of our carbon budgets. Methods to assess soils must be ecosystem based if they are to have utility for policy makers and managers wanting to change soil carbon and nutrient pools. Most of the texts on soil analyis treat agriculture and not forest soils and these methods do not transfer readily to forests because of their different chemistry and physical properties. This manual presents methods for soil and plant analysis with the ecosystem level approach that will reduce the risk that poor management decisions will be made in forests. This manual was intended for the instructors that teach students soil and plant analyses; however it can also be used by the research laboratories and by environmental scientists. The laboratory procedures in this manual are outlined in easy-to-follow steps and frequently accompanied with examples of calculations, questions to answer, and also a blank data sheet to use. These methods used in this manual can be used on soil and plant tissues found in agricultural, horticulture, forestry, urban, and natural lands.
Download or read book Automated Colorimeteric Methods For Determination Of Nitrate Plus Nitrite Nitrite Ammonium and Orthophosphate Ions In Natural Water Samples Antweiler R C Et Al written by Geological Survey (U.S.) and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific Investigations Report written by Sharon E. Kroening and published by . This book was released on 2004 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Soil Crusts Spatio temporal Development and Ecological Functions of Soil Surface Microbial Communities across Different Scales written by Shubin Lan and published by Frontiers Media SA. This book was released on 2024-08-09 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological soil crusts (biocrusts) are widely distributed throughout the world, and cover approximately 12% of the terrestrial surface. Biocrusts are composed of cyanobacteria, algae, lichens, mosses, and a great diversity of other microorganisms, which bind soil particles together to form a layer of biological-soil matrix on the soil surface typically of several millimetres thickness. They are important sites of regional and global microbial diversity and perform multiple ecological functions (multifunctionality). During the evolution of terrestrial life on earth, biocrusts are regarded as the main colonising photosynthetic organisms before the advent of vascular vegetation. They not only represent the early stages of terrestrial ecosystems, but also facilitate the ecosystem’s development and succession. Therefore, biocrusts are recognised as ecological engineers in the natural development of ecosystems and for the restoration of degraded terrestrial ecosystems. The development of biocrusts is highly heterogeneous, which is reflected on both temporal and spatial scales, and this heterogeneity is still clearly visible even in a small scale. However, up to now, only limited knowledge is acquired on biocrust temporal and spatial organisation. In particular there still is a large knowledge gap regarding the various biocrust communities under different developmental states and their related physiological metabolisms and ecological functions. Therefore, in-depth studies of these issues will undoubtedly further promote our understanding of the heterogeneous development of biocrusts, as well as their ecological multifunctionality in terrestrial ecosystems. The relevant contributions are expected to provide a scientific basis for the management of biocrusts and technology development (e.g. cyanobacteria-induced biocrust technology) for ecological restoration and the promotion of soil health.
Download or read book Soils and Fertilizers written by and published by . This book was released on 1996-07 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Water Analysis written by Leo M.L. Nollet and published by CRC Press. This book was released on 2013-07-29 with total page 995 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensively revised and updated, Handbook of Water Analysis, Third Edition provides current analytical techniques for detecting various compounds in water samples. Maintaining the detailed and accessible style of the previous editions, this third edition demonstrates water sampling and preservation methods by enumerating different ways to measure c
