Qhov tsis zoo ntawm cov khoom yas

1. Thaum rov ua dua cov khoom pov tseg, kev txheeb xyuas yog qhov nyuaj thiab tsis siv nyiaj txiag.

2. Cov yas hlawv yooj yim thiab tsim cov pa phem thaum hlawv. Piv txwv li, thaum polystyrene raug hlawv, toluene yog tsim. Ib qho me me ntawm cov tshuaj no tuaj yeem ua rau dig muag, thiab cov tsos mob xws li ntuav tuaj yeem tshwm sim los ntawm kev nqus pa. Kev kub hnyiab ntawm PVC tseem yuav tsim cov pa roj carbon monoxide hydrogen chloride. Ntxiv rau qhov kub hnyiab, qhov kub thiab txias ib puag ncig yuav ua rau cov yas decompose cov tshuaj lom, xws li benzene rings. Tos.

3. Cov yas yog tsim los ntawm cov khoom siv roj av, thiab cov khoom siv roj av muaj tsawg.

4. Yas tsis tuaj yeem decomposed ib txwm.

5. Lub tshav kub tsis kam ntawm cov yas tsis zoo, thiab nws yooj yim rau hnub nyoog.