Nuklida · stabil · alami
Besi-57 (⁵⁷Fe)
Besi-57 (⁵⁷Fe) adalah isotop stabil besi dengan 26 proton dan 31 neutron (nomor massa 57). Kelimpahan alaminya 0.021 19(29).
Data nuklida
- Unsur
- Besi (Fe, Z = 26)
- Nomor massa (A)
- 57
- Proton (Z)
- 26
- Neutron (N)
- 31
- Massa atom
- 56.935391950 ± 0.000000287 u
- Waktu paruh
- Stabil
- Mode peluruhan
- Tidak meluruh
- Kelimpahan alami
- 0.021 19(29)
- Tahun penemuan
- 1935
- Sumber data
- IAEA Atomic Mass Data Center (NUBASE) and IUPAC CIAAW, via PubChem
Kegunaan isotop besi
- Natural iron enriched in its least abundant stable isotopes, 57Fe and 58Fe, are used as a tracer in human studies to assess absorption, excretion, distribution, and utilization of iron in basic and applied research,,,,,. The two radioisotopes, 55Fe and 59Fe, have sufficiently long half-lives of 2.75 years and 44.5 days, respectively, to be used as tracers, but potential health and environmental hazards limit their use to diagnostic applications in patient care (i.e. disorders of blood and of iron metabolism),,.
Isotop besi lainnya
⁴⁵Fe, ⁴⁶Fe, ⁴⁷Fe, ⁴⁸Fe, ⁴⁹Fe, ⁵⁰Fe, ⁵¹Fe, ⁵²Fe, ⁵³Fe, ⁵⁴Fe, ⁵⁵Fe, ⁵⁶Fe, ⁵⁸Fe, ⁵⁹Fe, ⁶⁰Fe, ⁶¹Fe, ⁶²Fe, ⁶³Fe, ⁶⁴Fe, ⁶⁵Fe, ⁶⁶Fe, ⁶⁷Fe, ⁶⁸Fe, ⁶⁹Fe, ⁷⁰Fe, ⁷¹Fe, ⁷²Fe, ⁷³Fe, ⁷⁴Fe, ⁷⁵Fe, ⁷⁶Fe