Nuklida · radioaktif
Iodin-131 (¹³¹I)
Iodin-131 (¹³¹I) adalah isotop radioaktif iodin dengan 53 proton dan 78 neutron (nomor massa 131). Waktu paruhnya 8,0249 hari (± 0,0006 hari), meluruh terutama lewat peluruhan beta minus (β⁻).
Data nuklida
- Unsur
- Iodin (I, Z = 53)
- Nomor massa (A)
- 131
- Proton (Z)
- 53
- Neutron (N)
- 78
- Massa atom
- 130.906126375 ± 0.000000649 u
- Waktu paruh
- 8,0249 hari (± 0,0006 hari)
- Mode peluruhan
- Peluruhan beta minus (β⁻) ( 100 %)
- Inti anak
- Xenon-131 (¹³¹Xe)
- Tahun penemuan
- 1939
- Sumber data
- IAEA Atomic Mass Data Center (NUBASE) and IUPAC CIAAW, via PubChem
Kegunaan isotop iodin
- 131I (with a half-life of about 8 days) and 129I are both fission products; 129I is a long-lived fission product with a half-life of 1.7×107 years that can be helpful in the detection of the movement of radiation after a radioactive event, such as occurred at the Japanese reactors at Fukushima. In nuclear reactors and weapons tests, uranium and plutonium undergo fission processes in which one of the fission products is the long-lived isotope 129I. This isotope has been used as a groundwater tracer to determine evidence of nuclear fission, and it can also be tracked in rainwater as evidence of a fission event in the air (weapons explosion; Fig. IUPAC.53.1),,.
- 125I, which has a half-life of about 59 days, is used encapsulated in radiotherapy to target and treat sites of cancerous tumors. 120gI (with a half-life of 1.36 h), where the “g” indicates ground state, and 124I (with a half-life of 100 h) are radioactive isotopes that emit positrons and they are used in quantitative, diagnostic imaging of the body using positron emission tomography (PET),,,,,. 123I and 131I (with half-lives of 0.55 day and 8 days, respectively) are used with single-photon emission computed spectroscopy (SPECT) for basic three-dimensional imaging,. Radioactive iodine isotopes are produced from radioactive tellurium isotope.
Isotop iodin lainnya
¹⁰⁶I, ¹⁰⁷I, ¹⁰⁸I, ¹⁰⁹I, ¹¹⁰I, ¹¹¹I, ¹¹²I, ¹¹³I, ¹¹⁴I, ¹¹⁵I, ¹¹⁶I, ¹¹⁷I, ¹¹⁸I, ¹¹⁹I, ¹²⁰I, ¹²¹I, ¹²²I, ¹²³I, ¹²⁴I, ¹²⁵I, ¹²⁶I, ¹²⁷I, ¹²⁸I, ¹²⁹I, ¹³⁰I, ¹³²I, ¹³³I, ¹³⁴I, ¹³⁵I, ¹³⁶I, ¹³⁷I, ¹³⁸I, ¹³⁹I, ¹⁴⁰I, ¹⁴¹I, ¹⁴²I, ¹⁴³I, ¹⁴⁴I, ¹⁴⁵I, ¹⁴⁶I, ¹⁴⁷I