Qhov feem puaSilica yog nyob rau hauv Khoom noj khoom haus?
Silica, los yog silicon dioxide, yog ib qho ntxhia muaj nyob hauv lub ntiaj teb pob zeb. Nws kuj muaj nyob rau hauv ntau yam khoom noj thiab dej haus uas peb haus txhua hnub. Silica muaj ntau daim ntawv thov nyob rau hauv kev lag luam khoom noj khoom haus, qhov twg nws yog siv los ua ib tug anti-caking agent, ib tug thickener, thiab ib tug cab kuj rau flavors thiab xim.
Raws li ntau qhov chaw, feem pua ntawm silica hauv kev lag luam khoom noj txawv txawv nyob ntawm cov khoom thiab nws qhov kev npaj siv. Silica muaj nyob rau hauv ntau hom, suav nrog crystalline silica (quartz), amorphous silica, thiab colloidal silica, txhua tus muaj cov khoom sib txawv thiab kev ua haujlwm.
Qee cov khoom noj uas muaj silica hauv daim ntawv ntawm amorphous silica muaj xws li mov, oats, taum pauv, qos yaj ywm, txiv tsawb, thiab qee cov txiv hmab txiv ntoo thiab zaub. Crystalline silica tuaj yeem pom hauv qee cov nplej, xws li nplej thiab barley, nrog rau hauv cov txiv ntoo, noob, thiab qee cov nqaij. Colloidal silica feem ntau yog siv los ua tus cab kuj rau cov khoom qab zib thiab xim hauv cov dej haus thiab lwm yam khoom noj.
Txawm hais tias tsis muaj daim duab meej meej ntawm feem pua ntawm silica siv hauv kev lag luam khoom noj, nws tau kwv yees tias silica muaj txiaj ntsig tsawg dua 1 feem pua ntawm tag nrho cov khoom xyaw hauv cov zaub mov tiav. Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias kev noj silica ntau dhau tuaj yeem ua rau muaj teeb meem kev noj qab haus huv, xws li silicosis, kab mob ntsws uas tshwm sim los ntawm kev nqus cov crystalline silica.
Hauv cov ntsiab lus, silica yog cov ntxhia hauv ntau cov zaub mov thiab dej haus, thiab nws siv hauv kev lag luam khoom noj khoom haus yog dav. Txawm li cas los xij, feem pua ntawm silica siv hauv cov khoom noj uas tau ua tiav yog qhov tsawg thiab tsis ua rau muaj kev pheej hmoo rau kev noj qab haus huv tseem ceeb thaum noj hauv qhov nruab nrab.