lim ntawv

Feem ntau ntawm cov ntawv pov thawj muaj paj rwb, raws li kev siv ntau yam thiab kev siv ntau txoj kev ntawm ntau lawm. Vim nws cov khoom tsim los ntawm fiber ntau, ces nws qhov chaw muaj ntau qhov rau cov kua ua kua los ntawm, thiab cov khoom loj dua tuaj yeem tsis dhau. Cov cuab yeej no tso cai rau tov cov kua thiab cov tshuaj muaj zog yuav tsum sib xyaw ua ke.

Chromatography

Daim ntawv chromatography yog ua raws li ntawv lim ntawv raws li kev txhawb zog. Cov ntaub ntawv lim dej thiab dej muaj qhov sib haum, muaj peev xwm nqus tau txog 22% ntawm cov dej, thiab 6 mus rau 7% ntawm cov dej hauv daim ntawv cog lus ntawm hydrogen thiab cellulose hydroxyl ua ke, raws li cov kev mob nyuab nyuab tshaj tawm, thiab lim Cov ntawv xov xwm muaj zog thiab qhov sib xyaw ntawm cov organic hnyav yog cov tsis muaj zog, yog li cov ntaub ntawv chromatography tiag tiag ua ke ntawm cov ntaub ntawv lim fiber ntau ua theem nyob ruaj ruaj, organic hnyav li theem mobile, thaum lub sij hawm mobile theem ntawm daim ntawv, piv txwv ntawm solute nyob rau hauv dej thiab Cov organic phaj tujtaws faib tawm, thiab ib feem ntawm cov qauv tsiv nrog cov theem mobile, hauv thaj chaw uas tsis yog-khoos kas, thiab rov qab muab dua, ib feem ntawm lub caij nyom los ntawm cov theem ntawm cov theem mobile mus rau theem ( theem dej). Raws li cov theem mobile txav ceev, ntau qhov chaw tujtaws faib raws li lawv qhov kev faib tawm rau kev faib tawm thiab tsiv raws mobile theem, ua rau kev sib cais thiab kev kho ntawm cov khoom.

Lim Ntawv (Lim Ntawv) yog ib hom tshuaj lim dej ntau, feem ntau zoo ib puag, feem ntau yog ua los ntawm paj rwb.