By Kim H. Tan
The single e-book to fully outline and discover the genesis, extraction, homes, and influence of humic subject on agriculture, undefined, and the surroundings, Humic subject in Soil and the surroundings delves into the problems and controversies linked to produced and common humic compounds. It assesses the function of humic elements in medicinal drugs, fertilizers, and commercial and pharmaceutical operations, delivering attribute obvious gentle, infrared, ESR, NMR spectra, and electron micrographs for each humic compound. exceptional in scope and intensity, this reference examines controversies relating to humic topic as a true or fake compound and identifies traits and customers for the future.
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Extra resources for Humic Matter in Soil and the Environment: Principles and Controversies (Books in Soils, Plants, and the Environment)
5 M NaOH solution. The data of the author above with methylsulfoxide and dimethylformamide even show considerably less humic substances extracted than that by ethylenediamine. Indications for the possibility of chemical changes in the extracted humic matter are provided by the higher N contents noticed in humic substances extracted by Hayes (1985)with ethylenediamine, a compound containing N. 1 M hydroxyrnethyl amine have carboxyl contents substantially different from those extracted with NaOH (Orioli and Curette, 1980).
Aside from being an organic fertilizer, poultry manure is a valuable source of humic matter. , 1975; 1971). Due to the huge amounts of poultry manure available each year, its potential as a humic acid source is comparable to that of lignite or peat deposits. Not much information is available on this matter today. Another type of waste containing humic matter is sewage sludge, produced in amounts even more enormous than poultry manure. The figures reported by Larson and Schuman (1977) of 5,680 m3of sewage sludge barged daily from Chicago, IL, to its dumping site, and 5,450 m3of raw sludge transported daily by gravity through open ditches to landfills in Melbourne, Australia, demonstrate the colossal dimension of production.
Humic substances from dystrophic environments are believed to be more aromatic than those from eutrophic and mesotrophic systems (Klavins and Apsite, 1997). TM Copyright n 2003 by Marcel Dekker, Inc. All Rights Reserved. MARCEL DEKKER, INC. 4 Humic Matter in Geologic Deposits Humic matter occurs also in the vast geologic deposits, such as lignite, coal, oilshale, and fossil fuel. Extensive deposits oflignite in the United States are located in Utah, North Dakota, Idaho, New Mexico and Texas. The lignite in North Dakota is often called leonardite.