Nuklida · radioaktif
Itrium-90 (⁹⁰Y)
Itrium-90 (⁹⁰Y) adalah isotop radioaktif itrium dengan 39 proton dan 51 neutron (nomor massa 90). Waktu paruhnya 64,05 jam (± 0,05 jam), meluruh terutama lewat peluruhan beta minus (β⁻).
Data nuklida
- Unsur
- Itrium (Y, Z = 39)
- Nomor massa (A)
- 90
- Proton (Z)
- 39
- Neutron (N)
- 51
- Massa atom
- 89.907141749 ± 0.000000379 u
- Waktu paruh
- 64,05 jam (± 0,05 jam)
- Mode peluruhan
- Peluruhan beta minus (β⁻) ( 100 %)
- Inti anak
- Zirkonium-90 (⁹⁰Zr)
- Tahun penemuan
- 1937
- Sumber data
- IAEA Atomic Mass Data Center (NUBASE) and IUPAC CIAAW, via PubChem
Kegunaan isotop itrium
- Carbon nanotubes (CNT), which are nano-scaled carbon tubes, are being examined in nanobiotechnology research studies because it has been discovered that CNTs labeled with 86Y (with a half-life of 0.6 day) are soluble when they are injected into mice. This discovery was made after mice were given an intravenous or intraperitoneal (directly into a body cavity) injection with the 86Y CNT and then were examined using positron emission tomography (PET) scans to observe whether the 86Y had been flushed from their systems. The PET scan determined that accumulation of 86Y occurred in the liver, kidney, and spleen with very rapid blood clearance. This has broad implications for developing drug treatments. Radiomicrosphere therapy (RT) that uses 90Y (with a half-life of 64 h) microspheres is a proven therapy that helps treat hepatic (liver) cancer (Fig. IUPAC.39.1). 90Y is also used in radiosynovectomy to reduce joint pain.
Isotop itrium lainnya
⁷⁵Y, ⁷⁶Y, ⁷⁷Y, ⁷⁸Y, ⁷⁹Y, ⁸⁰Y, ⁸¹Y, ⁸²Y, ⁸³Y, ⁸⁴Y, ⁸⁵Y, ⁸⁶Y, ⁸⁷Y, ⁸⁸Y, ⁸⁹Y, ⁹¹Y, ⁹²Y, ⁹³Y, ⁹⁴Y, ⁹⁵Y, ⁹⁶Y, ⁹⁷Y, ⁹⁸Y, ⁹⁹Y, ¹⁰⁰Y, ¹⁰¹Y, ¹⁰²Y, ¹⁰³Y, ¹⁰⁴Y, ¹⁰⁵Y, ¹⁰⁶Y, ¹⁰⁷Y, ¹⁰⁸Y, ¹⁰⁹Y