
	Where results make sense

Topic: Humic acids

Related Topics

Soil salination

Anion

In the News (Sun 27 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Use of humic acids to enhance the removal of aromatic hydrocarbons from contaminated aquifers.
		Humic acids, found in soil and groundwater, have a surface activity similar to that of surfactants.
		In this project, the enhancement of the aqueous solubility of the aromatic hydrocarbons by humic acids was studied in laboratory columns (Xu et al., 1994) and in a large scale model aquifer (this article).
		Humic acid was obtained as the sodium salt (Aldrich Chemicals, Milwaukee, WI) and prepared as a solution using tap water at a concentration of 1g/L. The resulting pH was 8.5.
	www.bioremediationgroup.org /BioReferences/Tier1Papers/HumicAcid.htm (0 words)

	Europonic Fossil Fuel Liquid Humic Acids for Foliar & Root Application
		The humic acids in FossilFuel are derived from Leonardite, organic matter that is the result of a 70 million year humification process.
		Substrates conditioned with humic acid acids allow water, air and heat to reach the roots of your plants.
		Humic acid is a long chain molecule which is high in molecular weight, dark brown, and is soluble in an alkaline solution.
	www.hydrodynamicsintl.com /Europonic_Fossil_Fuel.html (267 words)

	Humic Acids
		The chemistry of their formation is quite complex, and freshwater humic acids can come from a variety of cources, most of which are on land (decomposing terrestrial vegetation.) These substances wash into lakes and rivers, undergoing further transofrmations along the way, and ultimately into the ocean.
		Peat is a rich source of humic acids, as are decaying driftwood, and the diagenisis of fish poo in the substrate of your aquaria.
		Humic acids are the endproduct of microbial degradation of plant and animal debris and are one of the most important constituents of fertile soils.
	www.thekrib.com /Chemistry/humic.html (0 words)

	Humic Acids - Essential for Plant Growth
		Humic acids are complex organic molecules that are formed by the breakdown of organic matter.
		HUMIC ACIDS are extracted from ground Leonardite, an oxidized form of lignite, and are the principal constituents of organic vegetable matter in an advanced state of decomposition.
		Humic acids have two main components: humic acid and fulvic acid, in different proportions according to their origin and extraction method.
	www.biofix.com /farmgrdn/humic/humic.html (575 words)

	Humics - Forschungszentrum Dresden-Rossendorf, FZD
		Humic acids are biopolymers that are formed beside other humic substances (fulvic acid, humin) during the degradation of biological material.
		In addition, the medicine dealt and deals with humic acids, especially in the domain of balneology, where humic acids in moor and well water, peats and soils are accepted as therapeutic agent as well as in the domain of virology, which could verify virostatic properties of humic acids.
		With regard to interactions between humic acids and uranium which is potentially dissolved from abandoned uranium mining facilities it is possible to draw conclusions for the migration of uranium in the environment: It is to expect that in this ecosystem dissolved, hexavalent uranium is reduced to insoluble, tetravalent uranium and thus, uranium is immobilized.
	www.fz-rossendorf.de /pls/rois/Cms?pOid=12742 (1176 words)

	Humintech® \| Environment & Humic Acids Based Products
		Humic matter is formed through the chemical and biological humification of plant and animal matter and through the biological activities of micro-organisms.
		The biological center, the main fraction of natural humic matter, are the humic acids, which contain humic acid and fulvic acid.
		Humic acids are an excellent natural and organic way to provide plants and soil with a concentrated dose of essential nutrients, vitamins and trace elements.
	www.humintech.com /001/environment/information/general.html (0 words)

	All About Tankless Water Heaters - Explaining Humic Acids
		Humic acids are the water-soluble organic acids naturally present in soil organic matter.
		Humic acids are a large family of organic compounds with similar characteristics.
		Humic Acid - (singular) is a long chain molecule which is high in molecular weight, dark brown and is soluble in an Alkaline solution.
	www.allabouttanklesswaterheaters.com /humic-acids.asp (596 words)

	Explaining Humic Acids (Site not responding. Last check: )
		Humic acids are the water-soluble organic acids naturally present in soil organic matter.
		Humic acids are a large family of organic compounds with similar characteristics.
		Humic Acid - (singular) is a long chain molecule which is high in molecular weight, dark brown and is soluble in an Alkaline solution.
	www.waralon.com /humic-acids.asp (615 words)

	Humic Acid
		Humic Acid comes entirely from vegetation which was laid down in the Carboniferous Period.
		Humates are the salts of humic acids, which form complexes with phosphorus and micro elements which are easy assimilated by plants, and sharply increase efficiency of mineral fertilizers.
		Fulvic acid is the acid radical found in humic matter which is soluble in alkali, acid, methyl ethyl ketone, and methyl alcohol.
	foliarfert.com /pages/humicacid.htm (947 words)

	Greencoast Hydroponics - About Us
		Humic acids are the primary extractable component of humic substances.
		However, fulvic acids are generally more plant active than humic acids due to their higher oxygen content and abundance of carboxyl groups.
		Specifically, humic acids increase the rate and percentage of seed germination, stimulate plant growth by accelerating cell division, improve the uptake of phosphates from fertilizers, act as a buffer to any salinity or toxicity in liquid fertilizers, increase the rate of root development and ultimately, increase overall yield.
	www.gchydro.com /art_humates.asp (659 words)

	[No title]
		After separating the humic acids by centrifugation they were washed with distilled water and dried at 105 for 12 h.
		The combined water of humic acids appears to be associated with the carboxyl groups as evidenced by the almost constant ratio of water to carbon dioxide (4: 1) found in the evolved gases on heat treatment at 150.
		Humic acids, being weak acids, should be in a non-ionized molecular form.
	www.nature.com /nature/journal/v197/n4863/ris/197177b0refs.ris (0 words)

	Nano Fulvic & Humic Acid
		According to the Water Quality Association, Fulvic Acid is a "water-soluble, natural, organic substance of low molecular weight, often found in surface water." It is one of several subclasses of Humic Acids that arise from complex mixtures of partially decomposed organic materials.
		Humic substances, of which Fulvic Acid is one, are the link between the living and the nonliving in nature.
		Furthermore, Humic Acids are able to beneficially influence and guide living organisms in various, unique stages of their life and growth.
	www.gmctx.com /hbs/nano/html/nano_fulvic___humic_acid.html (1811 words)

	Directory of open access journals
		The possibilities of utilisation of oxidised coal and humic acids to remove heavy metals from waste waters was studied.
		From the results follows that the samples of oxidised coal and theirs humic acids can be used for the heavy metal removal from metal solutions and the real acid mine water.Oxidised coal with a high content of humic acids and nitrogen is used in agriculture a fertilizer.
		Humic acids are active component in coal and help to utilize almost quantitatively nitrogen in soil.
	www.doaj.org /doaj?func=abstract&id=113600&recNo=8&toc=1 (0 words)

	The Skeptical Aquarist
		Humic substances, often called humins or "humic acids," are a generic catch-all designation for a range of dark-colored, soluble aromatic organic molecules that result from the incomplete decomposition of plant materials.
		It would take a specialist chemist to correctly divide up humic acids into their several subclasses, such as tannins and fulvic acids-- the sub-set of humic acids that are designated "fulvic acids" being even more soluble than humic acids in general.
		Humic substances also take out of circulation some of the calcium (Ca++) and magnesium (Mg++) ions that make water "hard." They do this by release of hydrogen ions in exchange, and the presence of the extra H+ ions in the water gives humic "acids" their acidifying effect.
	www.skepticalaquarist.com /docs/water/humic.shtml (1288 words)

	[No title]
		Humic acids are the major extractable component of soil humic substances.
		Another important difference is that while the oxygen in fulvic acids can be accounted for largely in known functional groups (COOH, OH, C=O), a high portion of the oxygen in humic acids seems to occur as a structural component of the nucleus.
		Humic acids are thought to be complex aromatic macromolecules with amino acids, amino sugars, peptides, aliphatic compounds involved in linkages between the aromatic groups.
	www.adbio.com /science/soil/humic-acids-substances.htm (566 words)

	Humic Acid
		Humic acids are brown-fl polymeric acids of plant origin that are practically everywhere on the Earth's surface.
		Early research Sprengel concluded that humic acids were sugar based, however later research challenged that claim and it became generally excepted that these acids are of plant aromatics origin such as lignin.
		This time the lignin origin of humic acid was challenged based on the results of chemical and NMR studies by one group, while another still supported the lignin concept.
	www.beta-glucan-info.com /humic_acid.htm (449 words)

	Monty's Plant Foood Humics Technology for sustainable agriculture
		This is true for most contact-type herbicides because the humic acids can increase cell permeability and are surfactants which allow better penetration of the herbicide (or foliar fertilizers) into the leaf and then from cell to cell.
		Humic substances are recognized by most soil scientists and agronomists as the most important component of a healthy fertile soil.
		Foliar fertilizers containing humic acids (HAs) and fulvic acids (FAs) in combination with nitrogen, potassium, phosphorus and various trace minerals have been demonstrated to be from 100 to 500 % more efficient compared to applications of similar fertilizers to the soil.
	www.montysinternational.com /humics.htm (3712 words)

	Monty's Plant Food - Humic Substances
		For the aging process and the formation of low molecular weight humic acids, a million years are needed for organic matter to break down to DNA and RNA fragments which are the main cytokinnins in humate.
		This is true for most contact-type herbicides because the humic acids can increase cell permeability and are surfactants which allow better penetration of the herbicide (or foliar fertilizers) into the leaf and then from cell to cell.
		Humic substances are recognized by most soil scientists and agronomists as the most important component of a healthy fertile soil.
	www.montysplantfood.com.au /www/53/1001229/displayarticle/1001585.html (3714 words)

	Humates and Humic Acid
		Current humic acid models help to explain HAs' origins and behavior as flexible, aliphatic-aromatic, highly functionalized molecules that can act as photosensitizers, retain water, bind to clays, act as plant growth stimulants, and scavenge toxic pollutants.
		Removal of humic acids from water avoids disinfection by-products such as chloroform and is a required step in production of potable water.
		Humic acids can bind soil toxins along with plant nutrients and they strongly stabilize soils.
	www.floridagardener.com /manures/Humates.htm (0 words)

	Dry & Liquid Humic Acids at Home Harvest Garden Supply
		In soil, the effect of humic acid is to create and preserve a stable structure that can provide the proper amounts of pore spaces for the storage of optimum amounts of water and oxygen.
		Humic matter enters into complex reactions with a variety of organic and inorganic components of soils and will influence plant growth and crop production indirectly and directly.
		The humic acids in FossilFuel are derived from Leonardite, the best source of these acids, and are proportioned perfectly for optimum results.
	homeharvest.com /humicacids.htm (0 words)

	Humic Acid, MYCSA AG, INC. THE ORGANIC PRODUCTS WEB SITE
		Humic Acid helps break up clay and compacted soils, assist in transferring micronutrients from the soil to the plant, enhances water retention, increases seed germination rates and percentages, and stimulates development of micro flora populations in soils.
		Water soluble humic acid is a potassium salt of the humic acid, it also known as potassium humate.
		Numerous studies have demonstrated the benefits of humic substances in general and of the humic acid in particular, among other things, improved water holding capacity of the soil, improved workability of the soil, enhanced soil drainage, more balanced soil pH, increased root system development, and enhanced plant growth and development.
	www.mycsaag.com /humicAcid.html (282 words)

	Re: Humic Acids
		Fine with me. The problem is that you don't know the reactivity of the humic acids in your tank matches the reactivity of the standard humic acid that Lamotte uses, so at best, you are back in the land of empirical correlations.
		I'm more interested in the humic acid content of successful planted tanks (or water color in APHA color units) because the background work that I've done on humification in reef aquaria vs. nature hasn't been done for planted tanks vs. nature, at least to the best of my knowledge.
		In the former case, most of the phenolic groups in humic acids are derived from terrigenous lignin.
	fins.actwin.com /aquatic-plants/month.9701/msg00218.html (851 words)

	- = Welcome to Kent Marine » Humic = -
		Humic acids and tannins are often present in water that has passed or been filtered through an organic derivative, such as peat, sphagnum moss, soil, decaying deciduous leaves, coconut fiber, etc, the acids and tannins being remnants of the decomposition of these and other organic materials.
		Because humic acid and tannins are organic derivatives, their presence in water is a source of nutrients to plants in and around lakes, rivers, streams, and aquariums.
		Humic will tint the water a light brown or yellow color, creating conditions much like those found in the Amazon region of South America as well as those present in Southeast Asia.
	www.kentmarine.com /botanica/humic.htm (269 words)

	ORGANIC MATTER
		HUMIC SUBSTANCES Humic substances are the components of humus and as such are high molecular weight compounds that together form the brown to fl hydrophilic, molecularly flexible, polyelectrolytes called humus.
		HUMIC ACIDS Humic acids (HAs) comprise a mixture of weak aliphatic (carbon chains) and aromatic (carbon rings) organic acids which are not soluble in water under acid conditions but are soluble in water under alkaline conditions.
		Fulvic acids collected from many different sources and analyzed, show no evidence of methoxy groups (CH3) groups, they are low in phenols, and are less aromatic compared to humic acids from the same sources.
	www.triganic.com /organic_matter.htm (8370 words)

	Humic Acid
		Humic Acid is a biostimulant and can be used on turf, trees, shrubs, bushes, beds, gardens and even on indoor plants.
		Humic Acid increases the availability of nutrients that are already in your soil and will naturally aerate the soil from the inside.
		Humic Acid helps to increase nutrient uptake, drought tolerance, seedling vigor, beneficial soil microbe activity and availability of all soil nutrients.
	www.greensmiths.com /humic.htm (426 words)

	OhioLINK ETD: Hsu, Pang-Hung
		Quinone-like structures in humic substances have been suggested to form covalent linkages with molecules containing amide groups, however, there is no direct molecular evidence for chemical bonding of these substances to humic substances.
		In this study, model peptides, representing proteinaceous materials with 15N-labeled amino acid residues, were mixed with various humic acids that vary in structural composition from predominantly aromatic to predominantly aliphatic.
		The enzyme degradation experiments conclusively show that peptides and proteins linked to humic acids are not fully hydrolyzed and portions of the peptides remain preserved within the humic acid structure.
	www.ohiolink.edu /etd/view.cgi?osu1087825560 (404 words)

	Fractional Precipitation of Humic Acids from Recent Sediment by Use of N, N-Dimethyl-formamide and its Infra-red ...
		Fractional Precipitation of Humic Acids from Recent Sediment by Use of N, N-Dimethyl-formamide and its Infra-red Absorption Spectra
		THE classification of humic substances, which are the main component of organic material in soils and sediments, is based on colour and behaviour in solvents.
		Humic acids are defined, according to the Tyurin method
	www.nature.com /nature/journal/v212/n5069/abs/2121462a0.html (0 words)

Try your search on: Qwika (all wikis)