Tib txoj hauv kev kom sib txawv ntawm cov iav los ntawm iav kom paub meej yog hu rau tus kws tshaj lij. Tab sis cov khoom ua los ntawm cov ntaub ntawv no muaj qhov sib txawv tseem ceeb uas txhua tus tuaj yeem pom. Khaws cov khoom hauv nqe lus nug thiab tshuaj xyuas nws. Cov khoom siv lead ua hnyav dua li iav cov khoom ntawm qhov loj me. Koj yuav tuaj yeem pom meej los ntawm nws, thiab tej zaum tseem pom zaj sawv. Tsis tas li, cov nplais ua suab paj nruag thaum lawv tsoo lwm yam khoom.
cov kauj ruam
Txoj Kev 1 ntawm 2: Pom Kev Pom Qhov Pom
Kauj Ruam 1. Nco tseg qhov tuab ntawm cov khoom
Crystal siv sijhawm ntev dua los txiav thiab tsim tawm ntawm qhov kub qis dua iav. Yog li ntawd, cov hlau lead hauv nws tuaj yeem ua qauv rau hauv cov qauv tsim thiab ntau dua. Tuav lub khob iav ib sab ntawm cov khoom siv lead ua thiab sib piv cov tuab ntawm ob yam khoom.
Piv txwv li, siv iav, saib seb lub ntug puas sib dua thiab tsis muaj qhov ntxhib
Kauj Ruam 2. Kuaj cov khoom kom meej
Muab kua rau ntawm qhov khoom lossis nqa cov khoom hauv nqe lus nug thiab saib los ntawm nws. Ordinary iav yog huab ntau dua li siv lead ua. Crystal nrog cov ntsiab lus txhuas ntau dua, ntawm qhov tod tes, tso cai rau dab tsi hauv lossis tom qab nws kom pom tseeb dua.
Piv txwv li, iav ib txwm yuav ua rau cov kua sab hauv nws zoo li huab. Qhov muag iav, ntawm qhov tod tes, tso cai pom qhov huv ntawm cov kua
Kauj Ruam 3. Tuav tus kwv mus txog qhov pom kev
Thaum koj tuav lub iav kom pom kev, tsis muaj dab tsi tshwm sim. Cov siv lead ua zoo, uas muaj cov ntsiab lus txhuas siab, ci. Lwm yam muaju ua zoo li prisms, ua rau koj pom zaj sawv thaum saib los ntawm lawv.
Txoj Kev 2 ntawm 2: Kuaj thiab Suab Tests
Kauj Ruam 1. Txheeb xyuas qhov khoom hnyav
Vim tias siv lead ua yog ua los ntawm txhuas, nws hnyav dua iav. Nqa cov khoom thiab koj yuav pom tias nws zoo li khov thiab muaj qee qhov hnyav. Nqa cov iav uas zoo ib yam, thiab nws yuav zoo li lub teeb.
Cov hmoov lead dawb tsis muaj lub teeb pom kev zoo thiab ruaj khov dua, tab sis tseem ci thaum tuav mus txog qhov pom kev
Kauj Ruam 2. Hnov qhov kev ntxhib los mos ntawm qhov khoom
Vim tias cov txheej txheem kev kos duab, siv lead ua zoo nkaus li du thiab sib npaug. Kov cov ntsej muag zoo nkauj uas koj pom. Kuj khiav koj txhais tes hla ntawm qhov khoom. Cov iav zoo li nkig, txawm tias siv lead ua yog qhov ua tau ntau dua. Txiav cov iav kuj tuaj yeem zoo dua.
Kauj Ruam 3. Ntaus lub cuab yeej los ntsuas nws lub suab
Los so cov khoom hauv nqe lus nug lossis coj nws maj mam tawm tsam qee yam khoom. Yog tias nws yog siv lead ua, nws yuav ua si ceeb toom. Yog tias nws tau ua los ntawm iav, nws yuav ua rau lub suab tsis zoo.
Ntub koj tus ntiv tes thiab khiav nws ib puag ncig ntawm qhov khoom yog tias ua tau. Crystal yuav tsim lub suab paj nruag, tab sis iav yuav tsis ua
Lub tswv yim
- Ib txwm muaju muaju ua nrog tsawg kawg 24% txhuas. Hauv qee qhov chaw, cov khoom uas ua nrog cov hlau lead tsawg kuj tseem tuaj yeem muab daim ntawv lo siv lead ua. Kuj tseem muaj cov hmoov lead dawb, ua nrog zinc oxide, barium oxide lossis potassium oxide.
- Cov khob iav tsis ntxeem tau thiab ntxuav tais diav kom nyab xeeb, cov iav siv lead ua tsis yog.