Calcium phosphate

Tribasic phosphoric acid forms na atọ ụdị calcium salts. Nke a calcium hydrogen phosphate CaHPO4, calcium dihydrogen phosphate Ca (H2PO4) 2 na orthophosphate, ma ọ bụ calcium phosphate, onye usoro e nyere site na: Ca3 (PO4) 2. Nke a nnu bụ inorganic umi, n'okpuru ọkọlọtọ ọnọdụ bụ a siri ike, na mmiri mmiri gafee (agbazenụ) na okpomọkụ nke 1200 C. The njupụta hà 2,81 g / cm³, na ezengwenri uka - 310,2 g / ahumachi. Calcium phosphate bụ agụghị oké soluble na mmiri: na 20 ° C uka nta nke ọ na-adịghị gafere 0,0025%. N'adịghị ka ọtụtụ ndị ọzọ ogige, na ọkwa nke ya solubility mbelata na-amụba okpomọkụ. N'ihi ya, na kpo oku a nnu bụ ike na-etolite ego na ya.

Calcium phosphate bụ a na-acha ọcha crystalline umi na bụ akụkụ nke apatite minerals (bụ nke klas nke phosphates nwere ruo 56% CaO na banyere 41% P2O5), phosphorite (fibrous ma ọ bụ oké nzukọ apatite nwere ihe karịrị 18% P2O5) na hydroxyapatite (isi akụrụngwa nke mmadụ na nke anụmanụ ọkpụkpụ). Anyị na-egosi mmalite nke ụfọdụ ego nke na nsị ma ọ bụ anụ ndị nwụrụ anwụ. Ọzọ ubi (eg, na oge ochie na oké osimiri) guzobere n'ihi nke ndụ "fosforobaktery". Ma n'ebe ụfọdụ, ego a ịnweta bụ kpere ịnweta malite. All nke ha na-ekesa na ọdịdị na na-eji akụ na ụba mba.

Apatite bụ a akụrụngwa n'ihi site, phosphate fatịlaịza ma phosphoric acid, nakwa dị ka eji na ferrous na nonferrous nkà mmụta banyere ígwè na mmepụta nke iko na seramiiki. Natural minerals na phosphate oké nkume nke dị iche iche si malite, ma ihe sedimentary, ha na-eji maka inwekwu inwetara na mmepụta nke phosphate nri. Ebuka phosphorites na apatites ndị dị oké mkpa ka ugbo, ebe ọ bụ na ọ bụghị naanị iji na-emepụta fatịlaịza, kamakwa dị ka a calcium isi n'ihi udia nnụnụ ma ọ bụ anụmanụ: nri calcium phosphate emepụta dị na GOST 23999-80.

Ịnweta inorganic - apatite - na-eji na ihe karịrị iri abụọ n'ichepụta n'ibu. Ya iji na mmepụta nke Abrasives, iko na egbuke, nakwa dị ka ihe na-amị free phosphoric acid na site. The usoro retara dị ka atụmatụ: 3SiO2 + Ca3 (PO4) 2 + 5C → 3CaSiO3 + 5CO + 2P. Nke a na umi na-ekwu na nri ụlọ ọrụ: dị ka a nri mmako E341 dị ka GOST P 53945-2010, ebe, tinyere 1- na 2-nnọchianya salts nke phosphoric acid gụnyere calcium phosphate. Nkwadebe nke a ngwaahịa na-agụnye tiri chọrọ maka feedstock. Na mmepụta nri nwekwara iji acid phosphoric ọkwa A dị na GOST 10678-76, calcium hydroxide dị ka GOST 9262-77 na na ya precipitated nzu dị ka GOST 8253-79.

Ịnweta nwere calcium phosphate, ekere òkè dị mkpa n'ime ahụ mmadụ. Hydroxyapatite nwere ike na-anọchite anya nke usoro 3Sa3 (PO4) 3 • Ca (OH) 2. Ọ bụ isi akụrụngwa nke ewu ihe owuwu na ụmụ mmadụ ọkpụkpụ. Nke a ịnweta akụkụ nke Enamel n'ụdị fluorapatite. The mkpa kwa ụbọchị n'ihi na nnukwu na site bụ na nso site na 800 na 1500 mg. N'oge metabolism nke site ogige ke ahụ mmadụ na-emegharị umeji mezie usoro a homonụ na vitamin D. ọrịa dị iche iche nke ọkpụkpụ na ezé mepụtara a erughi nke site ke idem. calcium phosphate na-abịa site na nri, na-ewusi ezé na ọkpụkpụ, na na Nchikota na ndị ọzọ minerals na-akwado obi usoro, na-egbochi colon cancer, mezie akwara ọrụ, aka na-ewu collagen, na-enyere ala cholesterol. The phosphates na-ewepụtara feces, na mmamịrị kwa tọhapụrụ ihe 4 g nke phosphoric acid salts.

Ndị bụ isi calcium phosphate mmadụ - mmiri ara ehi na mmiri ara ehi na ngwaahịa, ọka, e wusiri ike juices, cheese, ewu mmiri ara ehi, salmon, sardines na anchovies. N'ịbụ-agụghị oké soluble n'ime mmiri bụ calcium phosphate na a akwa ịta na mmiri ara ehi, ebe ọ bụ na a colloidal usoro n'ụdị micelles - ahụ nke nnọọ obere unyi anaghị agbasa na isi, nke a na-gbara ya gburugburu mgbaze ụmụ irighiri na adsorbed ion. Gụnyere na mmiri ara ehi casein, ọzọ kpomkwem, calcium caseinate, nke akọ phosphoproteins, ebe ọ nwere a phosphate otu. Otú ọ dị, ndị ọkachamara nwere ike ikwu iji zere ngafe nke calcium phosphate, karịsịa n'ụdị e wusiri ike oriri na Mmeju, ma ọ bụrụ na mmadụ nwere ma ọ bụ nke ndị na-esonụ ọrịa: parathyroid, akụrụ nkume ma ọ bụ n'oge na-aga n'ihu omume gụnyere tetracycline ọgwụ nje.