phosphate


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phosphate

 [fos´fāt]
any salt or ester of phosphoric acid. adj., adj phosphat´ic.

Phosphates are widely distributed in the body, the largest amounts being in the bones and teeth. They are continually excreted in the urine and feces and must be replaced in the diet. Inorganic phosphates function as buffer salts to maintain the acid-base balance in blood, saliva, urine, and other body fluids. The principal phosphates in this buffer system are monosodium and disodium phosphate. Organic phosphates, in particular adenosine triphosphate (ATP), take part in a series of reversible reactions involving phosphoric acid, lactic acid, glycogen, and other substances, which furnish the energy expended in muscle contraction. This is thought to occur through the hydrolysis of the so-called high-energy phosphate bond present in ATP, phosphocreatine, and certain other body compounds.

phos·phate (P),

(fos'fāt),
A salt or ester of phosphoric acid. For individual phosphates not listed here, see under the name of the base.

phosphate

/phos·phate/ (fos´fāt) any salt or ester of phosphoric acid.phosphat´ic

phosphate (PO43-)

[fos′fāt]
1 an anion of phosphoric acid.
2 a salt of phosphoric acid. Phosphates are extremely important in living cells, particularly in the storage and use of energy and the transmission of genetic information within a cell and from one cell to another. See also adenosine diphosphate, adenosine triphosphate, phosphorus.

phos·phate

(fos'fāt)
1. A salt or ester (especially inorganic) of phosphoric acid.
2. The trivalent ion, PO43-.

phosphate

any salt or ester of any PHOSPHORIC ACID.

Phosphate

An organic compound necessary for mineralization of bone and other key cellular processes.
Mentioned in: Hyperparathyroidism

phosphate

any salt or ester of phosphoric acid.
1. Phosphates are widely distributed in the body, the largest amounts being in the bones and teeth. They are continually excreted in the urine and feces, and must be replaced in the diet. Inorganic phosphates function as buffer salts to maintain the acid-base balance in blood, saliva, urine and other body fluids. The principal phosphates in this buffer system are monosodium and disodium phosphate. Organic phosphates, in particular adenosine triphosphate (ATP), are used to store the chemical bond energy released during the oxidation of compounds such as glycogen or fatty acids, which may later be expended in muscle contraction. This is thought to occur through the hydrolysis of the so-called high-energy phosphate bond present in ATP, phosphocreatine and certain other body compounds. See also hypophosphatemia, hyperphosphatemia.
2. used extensively in agricultural industry as fertilizers and organic compounds as cleaning agents.

phosphate binders
usually aluminum carbonate or hydroxide preparations, used to bind phosphates and limit their absorption from the intestine. Used in the treatment of the hyperphosphatemia of renal failure.
phosphate buffer
important phosphate-containing buffers.
phosphate buffered saline
a special phosphate buffered saline used in tissue cultures and for the storage and transport of bovine embryos. Abbreviated PBS.
phosphate calculi
see struvite urolith.
dietary phosphate
supplementation of the diet with phosphate in some form is a very common practice in farm animals. Materials used include rock phosphate (defluorination may be necessary), sodium dihydrogen phosphate produced by the agricultural chemical industry, calcium triphosphate and bone meal or flour.
inorganic phosphate
any salt of phosphoric acid.
phosphate retention
a phenomenon resulting from reduced glomerular filtration; contributes to a chronic hypocalcemic state.
phosphate ridge
see mineralization front.
phosphate rock
phosphate yielding endonucleases
a class of ribonuclease involved in the usually fairly rapid turnover of RNA in the cell that degrades RNA by cleavage of the phosphodiester bonds within the molecule.
References in periodicals archive ?
Conda Phosphate Operations is an integrated producer of phosphate fertilisers and specialty products, which includes phosphate production facilities and adjacent phosphate mineral rights, produces approximately 540,000 metric tons per year of mono-ammonium phosphate, super phosphoric acid, merchant grade phosphoric acid and specialty products and serves the North American fertiliser market.
It has been observed that prominent manufacturers of phosphate esters worldwide have been focusing on strategic acquisitions and geographical expansions to increase their manufacturing strengths and capabilities, as well as to increase their penetration in regions with high growth potential considering the global phosphate ester market.
He added that the stock of production in GCT plants "is almost exhausted," especially as no phosphate has been carried to these plants since August 29.
Le chef de service de controle de la production a signale que le stock de production des usines de GCT, " est presque epuise ", surtout qu'aucune operation de transport de phosphate vers ces usines n'a ete effectuee depuis le 29 aout courant.
Although Saudi Arabia does not possess as much rock as Morocco, it has other distinct advantages which make it a potentially powerful phosphate player, namely access to low-cost sulphur and gas, which it can utilise to produce the finished fertilisers.
It includes market dynamics, trends, competitive strategies preferred by key market players, driving factors that boost the growth of the feed phosphate market, and restraints of the market.
Our study objectives were to evaluate the fate and transport of OWS-derived phosphate from a residential system in Beaufort County, North Carolina, and to determine if current OWS setback regulations are sufficient to prevent elevated phosphate discharge to surface waters.
In light of the ammonia supply agreements, Mosaic has decided to forego a proposed ammonia manufacturing plant at its Faustina, Louisiana, phosphate facility, saving approximately $1.
In addition, data from the Spirit and Opportunity have suggested that Mars has 5 - 10 times the amount of phosphate as Earth, New Scientist reported.
Under the Transnational New Governance model for the phosphate industry, the World Wildlife Fund (WWF), a strong advocate and past initiator of the Transnational New Governance model in other industries, (11) should invite phosphate-industry actors and interested NGOs to a roundtable meeting.
Rum Jungle Resources Chairman, Mr Robert Annells, said: "We believe our Offer provides Central Australian Phosphate shareholders with an attractive value proposition.
Phosphate control has become an emerging concern due to large observational studies that have demonstrated the link between elevated phosphate levels and all-cause mortality in patients requiring dialysis (Block, Hulbcn-Shearon, levin.