1 edition of Composition and properties of humic acids in raised bog peat = found in the catalog.
Composition and properties of humic acids in raised bog peat =
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|Other titles||Augstā tipa purvu kūdras humīnskābju sastāvs un īpašības|
|LC Classifications||TN837 .S54 2010|
|The Physical Object|
|Pagination||137 p. :|
|Number of Pages||137|
|LC Control Number||2011513008|
“The heavy-metal binding abilities of humic acids have been exploited to develop remediation technologies for removing heavy metals from waste water.” Humic acid - Wikipedia “Humic and fulvic acids, when present in treated drinking water, can react with the chemicals used in the chlorination process to form disinfection byproducts such as. duction. Here we utilize the humic analog anthraquinone-2, 6-disulfonate (AQDS) to explore the importance of humic substances, and their e ects on the temperature sen-sitivity of anaerobic decomposition, in two peatland soils. In a bog peat, AQDS was not instantly utilized as a TEA, but greatly inhibited the fermentative production of acetate.
What Is Humic Acid? Humic and Fulvic acids are the final break-down constituents of the natural decay of plant and animal materials. These organic acids are found in pre-historic deposits. Humic matter is formed through the chemical and biological humification of plant and animal matter and through the biological activities of micro-organisms. Effects of Humic Acid in Agriculture An Overview of Literature and a Review of Current Research INTRODUCTION Humates contain both humic and fulvic acids. The fulvic acid is the chelator that carries the minerals. The humic acid acts as a dilator which increases the .
Presents molecular properties and sampling methods for humic and fulvic acids and organic colloids. Reviews chemical characterization and structural determination methods using IR, NMR, GC/MS, and fluorescence spectroscopy. Provides information on metal binding, including radionuclides. Describes the migration and transport of metals and radionuclides by humic and . DeepDyve is the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. DeepDyve is the easiest way to get instant access to the academic journals you need.
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Properties of raised bog peat humic acids do not much depend on the peat age and humification degree. • Presence of aromatic units in the structure of peat humic acids is low, and lignin residues cannot be identified. • Peat humic acids are at the beginning of the process of living organic matter degradation.
•Cited by: Characterization of Humic Acids from Raised Bog Peat Article (PDF Available) in Latvian Journal of Chemistry 52() February with Reads How we measure 'reads'. Properties and structure of raised bog peat humic acids Article in Journal of Molecular Structure October with 42 Reads How we measure 'reads'.
The aim of the work is to explore the properties and composition of humic acids isolated from raised bog peat prospective for industrial use, and the factors that influence their properties and composition.
The Tasks of the Thesis: 1. to collect peat File Size: 3MB. Peat humic acid properties and factors influencing their variability in a temperate bog the composition of peat humic acids was insignificantly affected by the differences in the composition of the precursor living organic material.
The upper part is represented by a m thick layer of raised bog peat of different type and. Physico-chemical properties of humic acids isolated from an Eriophorum-Sphagnum raised bog  Gierlach-Hladon, T., Karol Marcinkowski Univ.
of Medical Sciences, Poznan (Poland). Dept. of Inorganic and Analytical Chemistry Szajdak, L., Polish Academy of Sciences, Poznan (Poland). Inst. for Agricultural and Forest EnvironmentAuthor: Forest Environment. Fig. Elemental composition of humic acids from Eipurs and Dzelve bogs.
The variable elemental composition of the studied humic acids reflects their original material and is characterized by increasing values of carbon (C) in humic acids from peat with higher decomposition degree, while the concentra.
In-depth study of peat composition, humification degree and peat humic acid properties was carried out in two ombrotrophic bogs located in the central part of Latvia (Figure 1).
Full peat profiles were obtained and cut into 5-cm layers for analysis of peat properties and isolation of humic acids. The analysis of botanical compositionFile Size: 2MB.
In-depth study of peat composition, humification degree and peat humic acid properties was carried out in three ombrotrophic bogs located in Latvia. Full peat profiles were obtained and cut into 5-cm layers for analysis of peat properties and isolation of humic acids.
Isolation of peat humic acids HAs were extracted and purified, using. In this study, thermal analysis was performed on the peat and humic acids isolated from peat profiles of two ombrotrophic bogs. Despite the relative similarity of the genetic pattern and location of the bogs, they differ much in the composition and properties of peat as well as in the homogeneity of the peat profiles [13, 14].
Abstract. Studies of living organic matter humification process are essential for understanding of carbon biogeochemical cycle, and considering this, the aim of this study is to analyse relations between properties of the peat, peat humic acids (HAs) and humification degree on example of analysis of two bog profiles in ombrotrophic bogs to identify the links between Author: Maris Klavins, Oskars Purmalis.
In-depth study of peat composition, humification degree, and peat HA properties was carried out in an ombrotrophic Eipurs Bog, which is located in the central part of Latvia (lat 57[degrees]14'"N, long 24[degrees]37'"). Full peat profiles were obtained and cut into 5 cm layers for the analysis of peat properties and isolation of HAs.
The last two chapters of the book explore humic acids and their ability to interfere in molecular ecological studies as well as the various methods one could use to measure the humic acids' concentration in soil-extracted nucleic acids. Finally, this book presents an in-depth look at the role of humic materials in the dispersion of radioactive Author: Kristopher D.
Barrett. Elements in Raised-Bog Peat Depending on Its Composition and Formation For Doctoral Degree in Environmental Science Changes in Peat Composition and Properties during the Development of the Thermal Analysis of Peat and Peat Humic Acids in Relation to Their Origin.
In Mires and Peat (ed. K ļavi ņš M.). Properties of humic substances. Humic acids - the fraction of humic substances that is not soluble in water under acidic conditions (pH 2) but is soluble at higher pH can be extracted from soil by various reagents and which is insoluble in dilute acid.
Humic acids are the major extractable component of soil humic substances. Although humic acids (HAs) from peat exhibit various therapeutic properties, there is little information available concerning their physicochemical and antioxidant properties.
To address this issue, nine different types of peat, including oligotrophic, mesotrophic, and minerotrophic peat samples, were used for isolation of HA fractions by basic (HAb) and pyrophosphate (HAp) Cited by: 6.
A REVIEW OF HUMUS AND HUMIC ACIDS by T. Senn, Head, Department of Horticulture physical and chemical properties, thus the variation in amount of humic acids found in humic acids was found to increase the percentage content and total amount of Size: 28KB.
acids present in the molecular chains of humic acids (Yamamoto et al., ). METHODS Peats from four locations in Brazil were selected to represent a wide range of degree of decomposi-tion.
They were Fraga Rizzo peat, Darci peat, both from the region of Cravinhos, São Paulo; Florestal peat and Kurt peat from the city of Criciuma, Santa Catarina. The structure peculiarities of humic-like substances in plants at a dying stage, humic acids in peat-forming plants humified for two years, and native peats at branches of the Vasyugan bog were determined using spectroscopic techniques.
The polydispersity and absorbance of humic acids increased with the degree of humification; the concentration of Cited by: 6. Properties of the humic polyelectrolytes (HPE) - both fulvic acids (FA) and mixture of humic (HA) and fulvic acids extracted by water-ethanol solution from peat were studied using IR- UV-vis- AA-spectroscopies and by titration.
The total content of carboxylic and phenolic groups cs determined on the base of titration of the HPE by Са(ОАс) 2. The elemental composition of humin and humic acids is given in Table II. The value of the atomic H/C ratio in humin and humic acids ( andrespectively) indicates a highly aliphatic nature of these two types of organic matter.
FT-IR spectra of both humin concentrate and humic acids, presented in Figure 1, reveal a wide.Assaying a substance which is not of uniform chemical structure is a very difficult task. All methods are at best going to be indirect, producing an estimate, and.Sphagnum mosses synthesize polygalacturonic acid (Clymo ) and decomposition leads to release of complex humic acid substances (Thurman & Malcolm).
These organic acids contrast the strong mineral acids that form acid deposition. However, acid deposition plays an important part in the acidification of peat soils (Skiba ).