Ib zaug dhau los, platinum tsis txaus siab, vim lawv tsis paub txheej txheem. Vim tias nws zoo ib yam li sab nraud rau nyiaj, thiab platinum yog lub pluaj hlau, nws tau hu ua lo lus "nyiaj".
Feem ntau, cov nplhaib lossis qhwv ntsej raug khaws cia rau hauv cov thawv qub uas tau txais los ntawm pog. Cov khoom lawv tus kheej twb muaj nuj nqis lawm, zoo li lawv laus lawm, tab sis lawv tuaj yeem hloov tawm ua platinum dhau! Nws tsis yog qhov ceeb uas kuv xav kom txaus siab rau lawv, tab sis kuv tsis xav coj lawv mus deb ntawm tsev rau qee qhov laj thawj. Koj tuaj yeem sim ua koj tus kheej.
Platinum lub zog
Ua ntej pib cov txheej txheem los txiav txim siab platinum, koj yuav tsum paub seb nws txawv ntawm lwm cov hlau zoo li cas. Ua ntej, koj yuav tsum tau kwv yees qhov hnyav. Muab qhov chaw ntawm platinum nyob rau hauv lub rooj ntawm ib ntu, koj tuaj yeem pom tias nws yog ib qho ntawm cov hlau ntau dua, tsuas yog osmium nrog iridium muaj qhov ntau dua. Rau cov hniav nyiaj hniav kub ua haujlwm, platinum ntawm tsawg kawg yog 850 siv, uas txhais tau tias cov hlau ntshiab ntshiab hauv cov khoom lag luam tsis tsawg tshaj li 85%. Xav tias feem ntau zoo nkauj ntawm cov khoom ua los ntawm nyiaj lossis kub yog qhov qis dua, yog li ntawd, muaj tsawg dua ntawm cov hlau no hauv cov khoom.
Tsis muaj tshuaj rau hauv lub neej txhua hnub cuam tshuam rau platinum, uas txhais tau hais tias cov kab ntawm iodine lossis acetic acid yuav tsis nyob ntawm qhov khoom. Cov dej tsis los yog cua oxidizes cov hlau no, nws yog ib qho ntawm feem kev sib zog hauv kev hais lus. Cov kua roj bromine thiab aqua regia (qhov sib xyaw ntawm ob hom kua qaub, hydrochloric thiab nitric) muaj peev xwm ntawm platinum plam. Tab sis qhov no yog tus txheej txheem qeeb heev. Cov pa hluav taws hauv tsev neeg tsis tuaj yeem yaj ntawm cov hlau, vim nws melts ntawm qhov kub siab tshaj 1768 degrees.
Yuav ua li cas paub txog platinum koj tus kheej
Cov txheej txheem uas tau txais zoo tshaj plaws nyob rau hauv tsev mob yog txiav txim siab qhov ntom ntawm cov khoom siv los ntawm cov hniav nyiaj hniav kub tau ua.
Ua ntej tshaj, cov khoom yuav tsum tau ntsuas kom hnyav los ntawm sau nws qhov hnyav hauv grams. Tom qab ntawd, muab cov khoom tso rau hauv dej ntawm qee qhov ntim, xam seb cov kua tau hloov mus ntau npaum li cas. Lub thawv ntim hluav taws xob twg yuav ua tau zoo xwb. Tom qab ntsuas qhov ntim ntawm cov khoom, uas sib haum rau lub ntim ntawm cov dej tsis sib haum, qhov ceev yuav tsum tau muab xam. Qhov loj ntawm kev ua kom zoo nkauj, qhia hauv grams, yuav tsum tau muab faib los ntawm cov dej ntim tawm los ntawm qhov kev ua kom zoo nkauj no, qhia nyob hauv cubic centimeters.
Yog tias qhov tau txais tag nrho ntawm cov kev suav nyob ze tus naj npawb 21, 45, ces qhov no tuaj yeem tsuas yog ib qho xwb - nyob rau hauv pem hauv ntej ntawm koj yog kub dawb platinum. Tab sis qhov no tau muab hais tias cov khoom tsis muaj voids sab hauv.
Thiab ib txoj hauv kev muaj txiaj ntsig zoo dua kom paub txog cov hlau siv hauv cov pob zeb diamond qub yog coj cov pob zeb diamond rau kev soj ntsuam rau tus kws muag kub.
