Ocsaidean - 18 uisge
Carson leisg? Faighnich dhuinn a-nis!
Cuir fios thugainnSònrachaidhean
| Co-dhèanamh Isotope | |||
| O-18 | 98 atom% | ||
| O-17 | 1 atom% | ||
| O-16 | 1 atom% | ||
| Deuchainn | Sònrachadh | Toradh deuchainn | Dòigh / Iomradh |
| Giùlan | ≤5µS/cm | 1.4 | Conductometer |
| Purity | >99.9 | 99.93 | / |
| pH | 44355 | 6.1 | meatair pH |
| Gualain organach iomlan | 0.1 | TOCanalyzer | |
| Deuterium | ≤ 0.015% aig | 0.015 | FT-IR |
| Endotoxin | 112 | LAL | |
| Micro-bheairt | 1 | 9215b | |
| F | ≤ 0.5 mg / L | 0.1 | IC |
| Chl | ≤ 0.5 mg / L | 0.02 | IC |
| Br | ≤ 0.5 mg / L | 0.1 | IC |
| NO3 | ≤ 0.5 mg / L | 0.077 | IC |
| SO4 | ≤ 0.5 mg / L | 0.01 | IC |
| Zn | ≤ 0.5 mg / L | 0.1 | ICP |
| Le | ≤ 0.5 mg / L | 0.1 | ICP |
| Fe | ≤ 0.5 mg / L | 0.1 | ICP |
| Mar-thà | ≤ 3mg/L | 0.1 | ICP |
| K | ≤ 0.5 mg / L | 0.1 | ICP |
| Sin | ≤ 1mg/L | 0.1 | ICP |
| Tha mg | ≤ 0.5 mg / L | 0.1 | ICP |
Feartan corporra agus ceimigeach
| Staid corporra | leaghan | |||
| Coltas | leaghan | |||
| Màs moileciuil | 20.02 g / mol (air a chomharrachadh) | |||
| Dath | Gun dath | |||
| Puing leaghaidh | 0 °C | |||
| Àite reothadh | 0 °C | |||
| puing ghoil | 100 °C (212 °F) - air a lasadh | |||
| Iom-tharraing / dùmhlachd sònraichte | 1 g/ml aig 3.98 ° C | |||
tuairisgeul toraidh
Thathas a’ cleachdadh uisge beairteach Oxygen-18 mar thargaid a tha air a bhomadh le cuideachadh bho cyclotron no luathadair sreathach gus Flourine-18 a thoirt gu buil. Tha Flourine-18 air a cho-chur a-steach do 2-deoxy-2-18 F-β-D-glucopyranose (18 F-FDG) a tha na mholacile siùcar radiolabelled a thathas a’ cleachdadh ann am PET (tomography sgaoilidh positron) airson làraich metabolism glùcois neo-àbhaisteach a dhearbhadh agus airson ionadan ionadail. - a 'leasachadh iomadh seòrsa tumhair. An-diugh is e 18 F-FDG an radiopharmaceutical PET as fharsainge agus as soirbheachail. Tha 18 F-FDG na analogue de ghlùcos, tha e air a stealladh in vivo agus an uairsin tha 18 F-FDG air a ghiùlan bho fhuil gu figheagan ann an dòigh coltach ri glucose. Bidh ceallan a’ gabhail a-steach FDG mar glucose ach chan urrainnear a mheatabolachadh. Is e buannachd fìor chudromach de FDG-PET gu bheil e a’ cuideachadh le bhith a’ mìneachadh ìre agus làraich galair ath-chuairteach ann an iomadh seòrsa aillse.
tuairisgeul 2