Nuklida · stabil · alami
Oksigen-17 (¹⁷O)
Oksigen-17 (¹⁷O) adalah isotop stabil oksigen dengan 8 proton dan 9 neutron (nomor massa 17). Kelimpahan alaminya [0.000 367, 0.000 400].
Data nuklida
- Unsur
- Oksigen (O, Z = 8)
- Nomor massa (A)
- 17
- Proton (Z)
- 8
- Neutron (N)
- 9
- Massa atom
- 16.99913175595 ± 0.00000000069 u
- Waktu paruh
- Stabil
- Mode peluruhan
- Tidak meluruh
- Kelimpahan alami
- [0.000 367, 0.000 400]
- Tahun penemuan
- 1925
- Sumber data
- IAEA Atomic Mass Data Center (NUBASE) and IUPAC CIAAW, via PubChem
Kegunaan isotop oksigen
- 16O is used to produce radioactive 13N via the 16O (p, 4He) 13N reaction for imaging in positron emission tomography (PET) and to study blood flow through the heart (myocardial perfusion),. 17O has been used as a tracer to study cerebral oxygen utilization. Variations in stable oxygen and hydrogen isotopes are used in energy expenditure studies in animals and humans. The subject is administered a dose of doubly labeled water (water enriched in both 2H and 18O). Measurements of the elimination rates of 2H and 18O in the subject over time through regular sampling of body water (by sampling saliva, urine, or blood) provide information on energy expenditure because the hydrogen isotopic composition of body water is affected primarily by water loss (mainly urination), but the oxygen isotopic composition is affected by both respiration and water loss.
Reaksi inti
Isotop oksigen lainnya
¹¹O, ¹²O, ¹³O, ¹⁴O, ¹⁵O, ¹⁶O, ¹⁸O, ¹⁹O, ²⁰O, ²¹O, ²²O, ²³O, ²⁴O, ²⁵O, ²⁶O, ²⁷O, ²⁸O