AcidsSoilsSoilCovering humic acidAbstractHuminCompoundsDefinition of humicApplications of humicFractionsPeat humicHumificationSoluble in waterInteractionsLigninIsolationMineralsPotassium humateAlkalineExtractionSedimentsHumateStructuresLeonarditeSolubilityRemovalComplexationHumusLigniteMicrobial degradationAcidificationMolecular weightAquaticEffectsToxic substancesCarbonAdditionallyDecompositionWaterCalciumChemicalNaturalRangesDeterminationConcentrationBiodegradationProducts
Acids16
- However, molecular weight distributions of humic and fulvic acids significantly overlap. (wikipedia.org)
- Humic substances in soils and sediments can be divided into three main fractions: humic acids, fulvic acids, and humin. (wikipedia.org)
- The humic and fulvic acids are extracted as a colloidal sol from soil and other solid phase sources into a strongly basic aqueous solution of sodium hydroxide or potassium hydroxide. (wikipedia.org)
- Humic substances (aquatic fulvic and humic acids and peat humic acid) were isolated from a natural source (Whitray Fell, UK). (lancs.ac.uk)
- The ultracentrifugation method was more precise for the aquatic fulvic acid than for the more polydisperse humic acids. (lancs.ac.uk)
- There are three fractions of HS: humic acids (HA) which are soluble at high pH values, fulvic acids (FA) which are soluble under all pH conditions and humin which is insoluble under all pH conditions ( Ishiwatari, 1992 ). (peerj.com)
- This study evaluated the roles of natural humic substances (lignite-derived humic substances, standard and commercially available humic acids) and biodegradable chelating agents (ethylenediamine-N,N-disuccinic acid (EDDS) and glutamic-N,N-diacetic acid (GLDA)) for soil washing. (edu.hk)
- humate is humic acids salts,Potassium is kind of humic acid salts.It is extracted from humic acid and KOH. (answers.com)
- Peat organic substance and its humic acids constituency mostly determined the soil fertility , as resources of physiologically active lipid substances, which increasing processes of a vital signs of a living being. (globecore.com)
- Humic acids is the fraction of humic substance that is not soluble in acidic condition and soluble in higher PH solution with high molecular weight. (humicacid.biz)
- Specilized in Humic Acids for more than 15 years,Focus on green input to soild to protect soil and water from industrial pollution. (humicacid.biz)
- Influences of Nitrogen Application Levels on Properties of Humic Acids in Chernozem Amended with Different Types of Organic Materials. (dntb.gov.ua)
- Motta, Humic acids: Structural properties and multiple functionalities for novel technological developments, Mater. (dntb.gov.ua)
- Skripkina, Mechanochemical Solid-Phase Reactions of Humic Acids from Brown Coal with Sodium Percarbonate, Solid Fuel Chem. (dntb.gov.ua)
- Humic (HA) and fulvic (FA) acids isolated from soil, peat, water, filters, from the infiltration basin for artificial groundwater recharge, as well as commercial humic acid, were used in study. (tidskriftenvatten.se)
- Humic (HA) and fulvic (FA) acids (components of HS) were extracted from the sediment samples followed by in-depth characterisation via UV/VIS, fluorescence spectroscopy, elemental (C, N) and isotopic analysis (δ 13 C, δ 15 N), nuclear magnetic resonance ( 13 C NMR) and Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR-MS). All data were analysed by self-organising maps. (ufz.de)
Soils7
- Temperature-dependent IR spectroscopy capable of revealing specific changes in the band intensities, positions, and shape was used to increase the information on humic substances (HS) from soils. (dntb.gov.ua)
- Humic Substances Amendments for Improving Phytoremediation of Heavy Metal Polluted Soils: A Review[J]. Journal of Ecology and Rural Environment, 2020, 36(3): 273-280. (ere.ac.cn)
- BI Dong-xue,DENG Ya-juan,MENG Fan-de,et al.Humic Nanoparticles for Remediation of Cd-contaminated Soils[J].Chinese Journal of Environmental Engineering,2018,12(5):1295-1302. (ere.ac.cn)
- Long-term breeding can influence two together basic C sequestration in addition to the C arrangement of soils and the more opposing basic C compounds held in humic acid (HA). (2pressrelease.net)
- Here we argue that the available evidence does not support the formation of large-molecular-size and persistent 'humic substances' in soils. (nature.com)
- Humic substances were isolated from the surface soils of two British soil types using a sequence of aqueous solvents of increasing pH values. (usda.gov)
- Humic substances were isolated in the same way from the drainage ewaters from the soils. (usda.gov)
Soil29
- Humic substances represent the major part of organic matter in soil, peat, coal and sediments and are important components of dissolved natural organic matter (NOM) in lakes (especially, dystrophic lakes), rivers and sea water. (wikipedia.org)
- It is rooted in the history of soil science and, more precisely, in the tradition of alkaline extraction, which dates back to 1786, when Franz Karl Achard treated peat with a solution of potassium hydroxide and, after subsequent addition of an acid, obtained an amorphous dark precipitate (i.e., humic acid). (wikipedia.org)
- In general, humic substances derived from soil and peat (which takes hundreds to thousands of years to form) have higher molecular weight, higher amount of functional groups, more carbohydrate units and less polyaromatic units than humic substances derived from leonardite (which takes millions of years to form). (wikipedia.org)
- Humic matter in isolation is the result of a chemical extraction from the soil organic matter or the dissolved organic matter and represent the humic molecules distributed in the soil or water. (wikipedia.org)
- A new understanding views humic substances not as high-molecular-weight macropolymers but as heterogeneous and relatively small molecular components of the soil organic matter auto-assembled in supramolecular associations and composed of a variety of compounds of biological origin and synthesized by abiotic and biotic reactions in soil. (wikipedia.org)
- It is the large molecular complexity of the soil humeome that confers to humic matter its bioactivity in soil and its role as plant growth promoter. (wikipedia.org)
- The academic definition of humic substances is under debate as "humification" becomes unsupported as a special case, leading to some radical definitions expanding HS to encompass all difficult-to-characterize soil organic matter, at the cost of clarity. (wikipedia.org)
- Humic substances (HS) are compounds with a complicated structure, present in the humus soil layer, water, lake sediments, peat, brown coal and shales. (peerj.com)
- Batch kinetic experiments revealed that humic substances promoted Cu extraction at pH 8, but they were significantly adsorbed on the soil at pH 4, possibly posing impediment to soil remediation. (edu.hk)
- Organic matter is defined that all the organic substance in the soil with Hydrocarbonated base(containing hydrogen, carbon and oxygen). (humicacid.biz)
- As black soil are from decaying plants mostly is humic substance has strong cation exchange capacity, easy to hold minerals and water. (humicacid.biz)
- In heavy and compact soil, Humic acid will work with fungi to construct a crumb structure root to absorb water oxygen and nutrient also improve root penetration. (humicacid.biz)
- In alkaline soil, beneficial ion and other trace elements can not be absorbed by plants, humic acid can buffer the pH and convert the nutrients and trace elements into absorbable form and promote their uptake by the roots. (humicacid.biz)
- In acidic soil, humic acid will largely reduce the toxins such as the ally aluminum and heavy metals, which will be bonded firmly and immobilized, thus their toxicity is reduced and phosphate is bonded by aluminum is released. (humicacid.biz)
- in Soil if these sufficient humic substance there will be at least 35% of soluble nitrogen applied and held in the soil in the form of organic, then convert into stable form, finally bioavailable form. (humicacid.biz)
- Strong ability to release the lock up Phosphorus in soil, as humic substance has stronger CEC that will greatly chelate the cation from phosphate and release anion phosphate radicals. (humicacid.biz)
- In recent years, several articles have questioned the role and even existence of soil humic substances as a distinct entity in soil organic matter. (humic-substances.org)
- Humic substances isolated from peat of more recent origin are more similar to humic substances from soil, but for humic substances originating from older sources greater degree of humification is evident. (peatlands.org)
- Humic and fulvic substances are derived from humate, which is a component of soil. (beamminerals.com)
- The temperature trends of band maximum and intensity shifts are less prone to measurement conditions and may serve as qualitative parameters characterizing the composition of soil humic substances. (dntb.gov.ua)
- Malcolm, The uniqueness of humic substances in each of soil, stream and marine environments, Anal. (dntb.gov.ua)
- Pukalchik, Outlining the Potential Role of Humic Products in Modifying Biological Properties of the Soil-A Review, Front. (dntb.gov.ua)
- Nardi, Physiological effects of humic substances on higher plants, Soil Biol. (dntb.gov.ua)
- Humic substances (HS) is widely used in agriculture and soil improvement as an important component of soil organic matter. (ere.ac.cn)
- Based on summarizing the effect and mechanism of HS on heavy metals in soil, the potential of phytoremediation of heavy metal pollution in soil was analyzed by literature investigation:(1) Macromolecule humin (HM) and humic acid (HA) could passivate heavy metal ions and reduce the toxicity of heavy metals to crops. (ere.ac.cn)
- Humic substances are intensely main attributes of soil characteristic but the belongings of long-term implantation on their synthetic and spectroscopic traits wait disputed and are still not fully implicit. (2pressrelease.net)
- Humic stuffs description maybe also secondhand as an sign of the unending sustainability of soil and crop administration practices. (2pressrelease.net)
- Sutton, R. & Sposito, G. Molecular structure in soil humic substances: the new view. (nature.com)
- The aim of this conference is to expand the view of humic substances as the components of organic matter in soil and water to a broader understanding of the potential of humic materials as alternative feedstock for a biobased economy. (iupac.org)
Covering humic acid1
- Humic substances" is an umbrella term covering humic acid, fulvic acid, humin and hymatomelanic acid which differ in solubility. (wikipedia.org)
Abstract1
- abstract = "The effect of a synthetic iron(III)-porphyrin meso-tetra(2,6-dichloro-3-sulfonatophenyl)porphyrinate as a biomimetic catalyst in the oxidative treatment of 2,4-dichlorophenol (2,4-DCP) with humic substances and H2O2 was evaluated in factorial design experiments conducted at different concentrations of 2,4-DCP (0-25 ppm) and different incubation treatment times (0, 24, 96, or 120 h). (njit.edu)
Humin3
- In terms of chemistry, fulvic acid, humic acid and humin share more similarities than differences and represent a continuum of humic molecules. (wikipedia.org)
- The quotes below are copied from your site and pasted here so you'd understand my comments: -"Humus is composed mainly of humin, humic acid, and fulvic acid. (kenyon.edu)
- Humic substances are classified into three derived phenols generated by CuO oxidation are based on subcategories: humin, humic acid, and fulvic acid, based on GC-MS, HPLC with diode array detection (DAD) and CE- extractability at different pH values [3]. (lu.se)
Compounds5
- Humic substances (HS) are coloured recalcitrant organic compounds naturally formed during long-term decomposition and transformation of biomass residues. (wikipedia.org)
- Nosik, Antiviral activity of extracts of basidiomycetes and humic compounds substances against Human Immunodeficiency Virus (Retroviridae: Orthoretrovirinae: Lentivirus: Human immunodeficiency virus 1) and Herpes Simplex Virus (Herpesviridae: Simplexvirus: Human alphaherpesvirus 1), Vopr Virusol. (dntb.gov.ua)
- Humic substances, a family of closely related compounds, are considered to be a major product of this process. (humic-substances.org)
- The new ultra-high performance super- critical fluid chromatography method was also applied for the qualitative and quantitative analysis of lignin-derived phenolic compounds obtained upon alkaline cupric oxide oxida- tion of a commercial humic acid. (lu.se)
- Ten out of the previous eleven model compounds could be quantified in the oxidized humic acid sample. (lu.se)
Definition of humic2
- This definition of humic substances is largely operational. (wikipedia.org)
- definition of humic acid: it is main part of humic substance. (answers.com)
Applications of humic1
- With topics ranging from molecular understanding to innovative applications of humic substances, this conference aims to demonstrate the growing importance of humic substances in the context of global climate change and highlight how to draw the attention of industrial chemists to the conversion of huge resources of humified biomass to alternative feedstock for biobased products. (iupac.org)
Fractions3
- The protocols for isolating NOM, and humic and fulvic acid fractions of NOM utilize well-established preparative scale column chromatography and reverse osmosis methods. (humic-substances.org)
- The humic fractions were characterized using several spectroscopy procedures, sugar, amino acid and elemental analyses, chemiluminescence, and chemical degradation processes and identifications of the digest products. (usda.gov)
- The data will show distinct differences between fractions isolated at the different pH values, and the isolates at pH 7 resembled those of the humic substances in the drainage waters most closely. (usda.gov)
Peat humic1
- The acidity, elemental, functional and spectral characteristics of peat humic substances isolated from peat of different origin in Latvia are described. (peatlands.org)
Humification2
- Humic substance is pure substance from process of humification with stronger Cation Exchange Capacity than clay. (humicacid.biz)
- Sources encompass different stages of biomass humification, from mature lignites, peats, and, sapropels to young composts and humic materials that occupy a niche between fossil rocks and fresh biomass. (iupac.org)
Soluble in water4
- By definition, humic acid is soluble in water at neutral and alkaline pH, but insoluble at acidic pH (wikipedia.org)
- Humic acid pH 4-6 ,week acidic ,lower activity .when mixed with KOH or NaOH,after reaction they will become Humic acid salt that is to say humte, is soluble in water.more details at the related link. (answers.com)
- Humic acid has a complex structure (molecular mass is 1500) is not soluble in water. (answers.com)
- Humate is humic acid salt is completely soluble in water extracted from humic acid after treating with high PH alkaline agentlike NAOH, KOH. (humicacid.biz)
Interactions1
- Interactions between Humic Substances and Microorganisms and Their Implications for Nature-like Bioremediation Technologies. (dntb.gov.ua)
Lignin2
- Humic substances are formed by the microbial degradation of dead plant matter, such as lignin, cellulose and charcoal. (wikipedia.org)
- Methods reported for the analysis of 11 major lignin- mic substances. (lu.se)
Isolation1
- For nearly 4 decades, the International Humic Substances Society (IHSS, which is a non-profit scientific society) has distributed standard substances that adhere to strict isolation protocols and reference materials that are collected in bulk and originate from clearly defined sites. (humic-substances.org)
Minerals2
- Fulvic Acid USA: Offers Pure High Quality Fulvic and Humic Supplements Fulvic Acid: Superior Fulvic Humic X935 Offers Pure Fulvic Supplements, with 77+ Trace Minerals, Electrolytes and Humic Acid in Liquid Drops. (answers.com)
- Unlike complexes formed with minerals, the complexes with toxic substances and heavy metals have a neutral charge, are insoluble and are therefore difficult to absorb by the intestine. (bioag.eu)
Potassium humate2
- What is the difference between humic acid and potassium humate? (answers.com)
- How do you make potassium humate from humic acid? (answers.com)
Alkaline2
- Is humic acid acidic or alkaline? (answers.com)
- The results showed that the release of alkaline substances from the CML at the initial stage of use could strongly influence the pH of water, which consequently greatly impacted the release/precipitation behaviors of calcium, aluminum and silicon. (bvsalud.org)
Extraction1
- BioAg Europe consists of a team of specialists in the extraction of natural humus, humic acid and fulvic acid products for the agricultural sector, gardeners and industry. (bioag.eu)
Sediments1
- Humic substances (HS) in sediments play an important role in carbon and nutrient biogeochemical cycles and fate of contaminants in the environment. (ufz.de)
Humate3
- Sure you could get sodium humate from humic acid and NaOH. (answers.com)
- Organic matter, humic substance, humic acid , humate and fulvic acid are closely related, all are come from the natural process of decaying plants and animals body. (humicacid.biz)
- We make humic and fulvic substances, which are extracted from humate. (beamminerals.com)
Structures2
- The GC-MS analysis reveals dominance of aromatic structures in the humic substances. (peatlands.org)
- Burdon, J. Are the traditional concepts of the structures of humic substances realistic? (nature.com)
Leonardite1
- Mostly the raw material of humic acid is leonardite and oxidized lignite. (humicacid.biz)
Solubility1
- Water solubility of humic substances is primarily governed by interplay of two factors: the amount of ionizable functional groups (mainly, carboxylic) and the molecular weight. (wikipedia.org)
Removal4
- Feasibility of humic substances removal by enhanced coagulation process in surface water', International Journal of Environmental Health Engineering (IJEHE) , 1(August), pp. 1-8. (ac.ir)
- Pandey, Role of humic acid entrapped calcium alginate beads in removal of heavy metals, J. Hazard. (dntb.gov.ua)
- The removal of humic substances during drinking water preparation by artificial recharge of groundwaters using synthetic sorbents, activated carbon and anthracite was assessed. (tidskriftenvatten.se)
- These results indicate that the oxidative coupling of 2,4-DCP to humic substances catalyzed by the synthetic iron(III)-porphyrin catalyst in the presence of H 2 O 2 is responsible for the removal of 2,4-DCP from solutions. (njit.edu)
Complexation1
- For the prediction of chemical species distribution in systems containing humic substances (HS), a simplified complexation model was proposed in our previous study. (elsevierpure.com)
Humus3
- The formation of humic substances in nature is one of the least understood aspects of humus chemistry and one of the most intriguing. (wikipedia.org)
- The question that arises here, is how humus substances distinguish between nutrients that must be absorbed and toxic substances that must be removed. (bioag.eu)
- In addition to providing these unique products, BioAg Europe also aims to raise awareness of humus, humic acid and fulvic acid in general. (bioag.eu)
Lignite2
- Are humic substances the economic future of lignite strip mining? (humintech.com)
- The company utilizes humic substances from domestic lignite to create environmentally sound and efficient products for agriculture, animal breeding, environmental technology and industry uses. (humintech.com)
Microbial degradation1
- In response, we present an evidence-based rebuttal, detailing the decomposition processes of plant components and their transformation to a range of products, some of which, including humic substances, have a degree of resistance to microbial degradation. (humic-substances.org)
Acidification2
Molecular weight1
- In general, fulvic acid has higher amount of carboxylic groups and lower average molecular weight than humic acid. (wikipedia.org)
Aquatic2
- Aquatic humic substances were isolated for the first time later, in 1806, from spring water by Jöns Jakob Berzelius. (wikipedia.org)
- The substance met the ecological categorization criteria for persistence, but did not meet the ecological categorization criteria for bioaccumulation potential or inherent toxicity to aquatic organisms. (gc.ca)
Effects2
Toxic substances1
- 1989. Agency for Toxic Substances and Disease Registry. (cdc.gov)
Carbon2
- Humic-like substances (HULIS), the hydrophobic part of water-soluble organic carbon (WSOC), account for a significant fraction of PM 2.5 mass. (copernicus.org)
- Dissolved organic carbon (DOC), ultraviolet absorbance (UV 254 ), specific ultraviolet absorbance (SUVA), and humic acid (HA) were determined as the HS indices. (ac.ir)
Additionally1
- Additionally, humic substances from peat were analyzed and studied. (europa.eu)
Decomposition1
- We provide an appraisal of information about the genesis and compositions of humic substances, and the importance of compositional knowledge to devise treatments to modify their rate of decomposition. (humic-substances.org)
Water3
- Humic-like substances (HULIS), the hydrophobic part of water soluble organic material, account for ~10% of PM2.5 mass in the Pearl River Delta, China. (copernicus.org)
- Humic-like substances (HULIS), the hydrophobic part of water soluble organic material, account. (copernicus.org)
- This study evaluates the effectiveness of polyaluminium chloride (PACl)as a coagulant for enhanced coagulation (EC) of humic substances (HS) in surface water. (ac.ir)
Calcium1
- A complex with aluminum or lead is more stable than a complex with calcium or magnesium, which ensures that humic acid can selectively bind to toxic metals. (bioag.eu)
Chemical5
- Age and origin of the source material determine the chemical structure of humic substances. (wikipedia.org)
- 1992. Threshold limit values for chemical substances in the work environment. (cdc.gov)
- 1998. Documentation of the threshold limit values for chemical substances and physical agents. (cdc.gov)
- 2000. Threshold limit values for chemical substances and physical agents and biological exposure indices. (cdc.gov)
- It is an organic substance that is found in Canada and elsewhere primarily as a chemical intermediate in a variety of industries. (gc.ca)
Natural4
- Natural polyelectrolytes, including in the form of complexes with colloidal particles, are increasingly used in pharmacy due to the possibility of regulated attachment of medicinal substances and their targeted delivery to the target organ. (dntb.gov.ua)
- Identification of next-generation International Humic Substances Society reference materials for advancing the understanding of the role of natural organic matter in the Anthropocene by Chin et al. (humic-substances.org)
- Humic substances (HSs) are the natural organic polyelectrolytes formed from the biochemical weathering of plant and animal remains. (princeton.edu)
- Humic entities from natural situations showed more aliphatic character, when in fact more shortened-opposite of an acid dissolved humic substances were made in the unfertilized and not organic situations. (2pressrelease.net)
Ranges2
- No evidence was found for a dependence of ( ) on humic concentration within the ranges studied. (lancs.ac.uk)
- Globally, bands middle from two points humic parts maybe famous by Fourier mutate infrared (FT-IR) ranges. (2pressrelease.net)
Determination1
- Experimental determination of partial specific volumes of humic substances in aqueous solutions. (lancs.ac.uk)
Concentration3
- Measurements were made in a range of conditions from 0.01 M to 0.5 M salt concentration and in the humic substance concentration range 0.01 to 2 mg ml−1. (lancs.ac.uk)
- Humic acid and fulvic acid have the capacity to bind metal ions and release them again in an environment with a higher pH, or in the presence of a high sodium concentration. (bioag.eu)
- On the basis of the carcinogenic potential of 2-nitrotoluene, for which there may be a probability of harm at any exposure level, it is concluded that 2-nitrotoluene is a substance that may be entering the environment in a quantity or concentration or under conditions that constitute or may constitute a danger in Canada to human life or health. (gc.ca)
Biodegradation2
- Humic substances in the lab are very resistant to further biodegradation. (wikipedia.org)
- The most striking feature of humic materials in a biobased economy is the constellation of such properties as nontoxicity, biocompatibility, resistance to biodegradation, and polyfunctionality. (iupac.org)
Products3
- What r products of chlorine and humic acid reaction? (answers.com)
- Chlorinated products of humic acid (or polyphenols) are formed (by substitution and or addition reactions) which gives them an awefull odor. (answers.com)
- The ForestSpeCs project has demonstrated beyond doubt that forestry side-products such as abundant bark materials, as well as humic substances easily obtained from peat, possess properties, which make them a valuable resource for exploitation. (europa.eu)