Kev phom sij ntawm Phosphoric Acid

Apr 06, 2023

Muaj pov thawj txaus los txhawb kev nyab xeeb ntawm kev ntxiv me me ntawm phosphoric acid rau zaub mov. Yog li ntawd, siv 0.01-0.02 feem pua ​​​​ntawm cov neeg ua haujlwm chelating, antioxidant, lossis "synergist" hauv kev sib xyaw ntawm cov tshuaj antioxidants yuav tsum tsis txhob muaj kev phom sij rau kev noj qab haus huv. Siv phosphoric acid los them rau qhov tsis muaj acidity nyob rau hauv cov txiv hmab txiv ntoo, raws li ib tug tsw muaj thiab lwm yam txhais tau tias, yuav tsum tsis txhob muaj teeb meem nyob rau hauv lub "ib txwm" concentration ntau ntawm ib txwm tshwm sim phosphates nyob rau hauv cov zaub mov. Txawm li cas los xij, yog tias nws tshaj qhov qub, phosphoric acid yog ib qho tshuaj lom neeg reagent.

Vim nws cov acidity, phosphate (orthophosphate, metaphosphate) tuaj yeem ua rau khaus thiab ua mob rau lub qhov muag hauv zos, tab sis cov phosphate tsis muaj tshuaj lom rau lub qhov muag. Thaum kuaj ntawm tib neeg lub qhov muag, buffered rau pH ntawm 2.5 ntawm 0.16 M orthophosphate tuaj yeem ua rau mob me me thiab luv luv, tab sis kev siv ib zaug tsis ua rau mob. Kho qhov poob ntawm tib cov tshuaj rau pH 3.4 yuav tsis ua rau tsis xis nyob.

High concentrations ntawm phosphoric acid tuaj yeem corrode tag nrho cov ntaub so ntswg nrog nws. Kev xav ntawm 75 feem pua ​​​​lossis siab dua tuaj yeem ua rau tawv nqaij kub hnyiab. Kev nqus pa los yog huab cua tuaj yeem ua rau qhov muag, qhov ntswg, caj pas, thiab ua pa ua pa lossis hnoos. Tom qab noj tshuaj, nws tuaj yeem ua rau xeev siab, ntuav, mob plab, ntshav raws plab, acidosis, poob siab, nrog rau khaus lossis kub hnyiab ntawm qhov ncauj thiab pharyngeal mucosa, esophagus, thiab plab. Thaum siv los ua tus neeg saib xyuas hlau, phosphoric acid yuav hnov ​​​​mob nrog impurities hauv cov hlau, tso cov roj phosphine.