Qhov Tseem Ceeb - Calcium vs. Calcium Carbonate
Qhov sib txawv tseem ceeb ntawm Calcium thiab Calcium Carbonate yog Calcium (Ca) yog cov tshuaj dawb huv thiab Calcium carbonate (CaCO 3) yog Calcium muaj cov khoom xyaw; nws yog ib qho ntawm cov ntaub ntawv ntau tshaj plaws ntawm Calcium pom nyob rau hauv xwm. Calcium yog cov ntxhia tseem ceeb rau tib neeg lub cev, thiab nws muaj ntau yam haujlwm. Piv txwv li, Calcium carbonate yog ib qho ntawm feem ntau siv raw khoom hauv kev npaj ntau yam khoom lag luam. Cov khoom thiab kev siv cov calcium thiab calcium carbonate muaj qhov sib txawv zoo txawm tias ob qho tib si muaj calcium.
calcium yog dab tsi?
Calcium yog ib yam tshuaj nyob rau hauv pawg II ntawm lub sij hawm lub sij hawm nrog cov tshuaj cim Ca thiab lub atomic tooj 20. Nws yog cov mineral abundance nyob rau hauv peb tib neeg lub cev; txog 1.9% los ntawm qhov hnyav. Feem ntau (99%) ntawm calcium nyob rau hauv tib neeg lub cev yog nyob rau hauv lub cev pob txha thaum cov seem muaj nyob rau hauv cov hniav (0.6%), cov ntaub so ntswg mos (0.6%), plasma (0.03%) thiab extracellular kua (0.06%).. Calcium yog qhov thib peb feem ntau yog xim hlau nyob rau hauv lub ntiaj teb crust, ib tug trimorphic, dull grey los yog nyiaj hlau, nyuaj dua Sodium, tab sis softer tshaj Aluminium. Calcium tsis tuaj yeem pom hauv daim ntawv ntshiab hauv qhov xwm txheej; Hloov chaw, nws pom muaj limestone (CaCO3), gypsum, thiab fluorite.
Calcium Carbonate yog dab tsi?
Calcium carbonate yog cov tshuaj muaj tshuaj muaj Ca2+ and CO32- ions. Nws yog ib qho ntxhiab tsw, dej-insoluble, dawb xim siv lead ua uas muaj feem ntau pom nyob rau hauv cov xwm. Nws tuaj yeem pom nyob rau hauv txhua qhov ntawm lub ntiaj teb, thiab Calcium carbonate yog ib txwm muaj nyob rau hauv qe plhaub, limestone, marble, seashells, thiab coral. Cov khoom siv tshuaj lom neeg ntawm CaCO3 zoo ib yam li lwm cov carbonates.
Dab tsi yog qhov txawv ntawm Calcium thiab Calcium Carbonate?
Dej Solubility:
Calcium: Calcium ions hauv dej yog ib qho ua rau dej tawv, thiab tshem tawm Ca2+ ions los ntawm dej yog txheej txheem kom tau cov dej mos.
Calcium Carbonate: Calcium carbonate muaj qhov solubility tsawg heev hauv cov dej ntshiab, nws yog cov xim dawb lossis cov dej nag, thiab cov solubility sib npaug rau 1.4 mg / L ntawm 25 ° C. Txawm li cas los xij, cov cuab yeej no hloov pauv hauv cov dej nag saturated nrog carbon dioxide. Hauv dej nag, qhov solubility nce vim yog bicarbonate ions tsim.
Kev Siv Hluav Taws Xob:
Calcium: Calcium yog siv los txo cov ntxhia hauv kev tsim cov hlau xws li Uranium (Ur) thiab Thorium (Th). Tsis tas li ntawd, calcium yog siv los ua cov hlau alloy rau txhuas, beryllium, tooj liab, txhuas thiab magnesium alloys.
Calcium Carbonate: Calcium carbonate yog siv hauv ntau daim ntawv thov kev lag luam. Nws nquag siv hauv kev lag luam roj hmab thiab tsim cov khoom siv PVC, tshuaj, ntawv, tshuaj pleev ib ce, thiab tshuaj txhuam hniav. Tsis tas li ntawd, nws yog siv los tsim cov xim, txheej txheej, dyestuff, luam ntawv inks, adhesives, thiab explosives.
Cov Teebmeem Kev Noj Qab Haus Huv:
Calcium: Tsis muaj calcium nyob rau hauv ib qho ntawm cov laj thawj tseem ceeb ntawm cov pob txha pob txha ua rau pob txha pob txha tsis tshua muaj. Yog li ntawd, nws lub luag haujlwm tseem ceeb tuaj yeem suav tias yog kev tswj xyuas pob txha; Tsis tas li ntawd, pab tswj lub plawv dhia, cov leeg ua haujlwm thiab ntau ntxiv.
Calcium Carbonate: Tib neeg lub cev tsis xav tau calcium carbonate, tab sis cov neeg uas xav tau calcium ntxhia ntxiv tuaj yeem noj calcium carbonate ua cov ntxhia ntxiv hauv cov khoom me me thiab ua cov tshuaj tiv thaiv kab mob. Lub adsorption ntawm calcium rau tib neeg lub cev nyob ntawm tus nqi pH hauv plab.
