High Purity Deuterium oxide
Vim li cas ho tsis kam lees? Nug peb tam sim no!
Tiv tauj pebSpecifications
| D2O, Enriched | ≥99.9% | |
| Tsis muaj | Certified Values | Chav tsev |
| D/H | ≥99.9% | mol % |
| pD | 6-8. | '- |
| Kev coj ua | ≤ 0.3 | µs/cm |
| Chloride | ≤ 20 | ppb ua |
| Silicate (raws li SiO2) | ≤ 25 | ppb (as SiO2) |
| TOC | ≤ 2 | ppm ua |
| Heavy Hlau (Fe) | ≤ 40 | ppb (as Fe) |
| turbidity | ≤ 2 | NTU |
| Dissolved Oxygen | ≤ 100 | ppb ua |
Lub cev thiab tshuaj muaj zog
| Lub cev lub xeev | Ua kua | |||
| Qhov tshwm sim | Ua kua | |||
| Molecular mass | 20.0276 g / mol (Lawv) | |||
| Xim | Tsis muaj xim | |||
| Qhov chaw khov | 3.82°C dej | |||
| Boiling point | 101.4°C dej | |||
| Lub ntiajteb txawj nqus / ntom | 1.1056 g / ml ntawm 25 ° C | |||
cov khoom piav qhia
Hnyav dej (deuterium oxide) yog ib hom dej uas nws hydrogen atoms yog tag nrho cov deuterium (2H lossis D, los yog hnyav hydrogen) ntau dua li cov hydrogen-1 isotope (1H, kuj hu ua protium) uas ua rau feem ntau ntawm cov hydrogen. Nyob rau hauv ib txwm dej.Lub xub ntiag ntawm lub hnyav isotope muab cov dej sib txawv nuclear zog, thiab qhov nce nyob rau hauv loj muab nws me ntsis txawv lub cev thiab tshuaj zog thaum piv rau ib txwm dej.
Deuterium yog ib qho hnyav hydrogen isotope. Cov dej hnyav muaj deuterium atoms thiab siv rau hauv cov reactors nuclear. Semiheavy dej (HDO) muaj ntau dua li cov dej hnyav hnyav, thaum cov dej hnyav-oxygen yog denser tab sis tsis muaj cov khoom tshwj xeeb. Tritiated dej yog radioactive vim muaj cov ntsiab lus tritium.
Cov dej hnyav muaj qhov sib txawv ntawm lub cev los ntawm cov dej tsis tu ncua, xws li ua 10.6% denser thiab muaj cov ntsiab lus melting ntau dua. Cov dej hnyav tsis tshua muaj kev sib cais ntawm qhov kub thiab txias, thiab nws tsis muaj xim xiav me ntsis ntawm cov dej tsis tu ncua. Txawm hais tias nws tsis muaj qhov sib txawv tseem ceeb, nws tuaj yeem saj me ntsis qab zib. Cov dej hnyav cuam tshuam rau cov kab mob lom los ntawm kev hloov cov enzymes, hydrogen bonds, thiab cell division hauv eukaryotes. Nws tuaj yeem ua rau tuag taus rau ntau cov kab mob ntawm qhov siab tshaj 50%. Txawm li cas los xij, qee qhov prokaryotes zoo li cov kab mob tuaj yeem muaj sia nyob hauv ib puag ncig hydrogen hnyav. Cov dej hnyav tuaj yeem ua rau tib neeg, tab sis ntau npaum li cas yuav tsum tau ua kom muaj tshuaj lom.
piav 2