Qhov laj thawj vim li cas ntau lub chaw tsim khoom xav tau lub tshuab rov ua kom hnyav yog tias nws tuaj yeem siv lub hauv paus ntsiab lus ntawm kev rho tawm kom siv tag nrho cov khoom pov tseg no, qias neeg, thiab cov organic hnyav hnyav kom ua tiav lub hom phiaj ntawm kev txuag hluav taws xob. Txawm li cas los xij, vim tias qee cov kuab tshuaj muaj kev phom sij ntau dua, yuav tsum tau siv lub tshuab ua kom tawg tawg tawg. Tab sis qee tus neeg siv tsis paub meej txog qhov kev paub no, yog li cov cuab yeej lawv yuav yog ib txwm tsis txaus siab. Yog li ntawd, cov neeg siv yuav tsum tau kawm paub ntau ntxiv txog qhov kev paub no txhawm rau ua haujlwm zoo hauv kev rov ua kom hnyav. Yog li qhov hnyav rov qab yuav tsum siv cov khoom pov thawj tawg?
acetone
Peb paub tias hom tshuaj hnyav heev no tsis yog tsuas yog lom tab sis kuj tuaj yeem tawg thiab tawg tau. Yog tias siv cov cuab yeej zoo ib yam, kev nyab xeeb xwm txheej yuav tshwm sim tsis tau. Yog li, nws yog qhov yuav tsum tau siv cov khoom pov thawj tawg. Yog lawm, yog tias koj xav siv nws kom nyab xeeb, nws yog ib qho tseem ceeb uas yuav tsum tau ua tib zoo saib xyuas cov khoom tawg-pov thawj zoo. Tshwj xeeb tshaj yog thaum cov chaw tsim khoom yuav nws, nws yog ib qho tseem ceeb heev uas yuav tsum tau ua tib zoo saib xyuas nws cov peev txheej tawg-pov thawj thiab cov khoom siv. Feem ntau hais lus, cov cuab yeej muab los ntawm cov tuam ntxhab paub zoo tau lav, thiab cov neeg siv tuaj yeem yuav nrog kev ntseeg siab.
cawv
Thaum nws los txog rau cawv, txhua tus tsis muaj neeg txawv. Vim tias peb tau pom qhov hnyav no hauv peb lub neej txhua hnub, tab sis nws yog cov nplaim taws thiab tawg. Yog tias siv lub tshuab ua kom rov zoo li qub, yog tias qhov ntsuas kub ntawm cov khoom siv siab dhau thaum lub sijhawm ua haujlwm, nws kuj yooj yim rau tawg. Yog li ntawd, lub tshuab rov ua kom cov tshuaj hnyav rov los kuj tseem yuav tsum tau rov ua kom cov cawv muaj kuab lom.
Ethyl acetate hmoov
Qhov no yog hom tsw tsw ntxhiab nrog qee yam tshuaj lom thiab muaj kev nkag siab siab, thiab nws yog qhov hloov pauv, yog li nws tseem ceeb heev uas yuav tsum siv cov khoom pov thawj tawg rau rov ua dua tshiab. Yog lawm, thaum cov neeg siv yuav cov khoom pov thawj tawg, lawv tuaj yeem siv txoj cai ntawm kev yuav khoom ib puag ncig los xaiv ntau lub tuam txhab los koom tes nrog.
Thaum yuav lub tshuab rov ua kom cov kuab tshuaj tawg rov qab los, cov chaw tsim khoom yuav tsum ua tib zoo saib xyuas nws qhov zoo kom ntseeg tau tias nws muaj txiaj ntsig siv tau zoo. Tshwj xeeb tshaj yog nyob rau lub ntsej muag ntawm ntau lub npe ntawm kev ua lag luam, tsis txhob' tsis txhob siab hlob rau qhov pheej yig, tsom mus rau qhov zoo yog qhov tseem ceeb.
