Nuklida · radioaktif
Skandium-46 (⁴⁶Sc)
Skandium-46 (⁴⁶Sc) adalah isotop radioaktif skandium dengan 21 proton dan 25 neutron (nomor massa 46). Waktu paruhnya 83,757 hari (± 0,014 hari), meluruh terutama lewat peluruhan beta minus (β⁻).
Data nuklida
- Nomor massa (A)
- 46
- Proton (Z)
- 21
- Neutron (N)
- 25
- Massa atom
- 45.955167034 ± 0.00000072 u
- Waktu paruh
- 83,757 hari (± 0,014 hari)
- Mode peluruhan
- Peluruhan beta minus (β⁻) ( 100 %)
- Inti anak
- Titanium-46 (⁴⁶Ti)
- Tahun penemuan
- 1936
- Sumber data
- IAEA Atomic Mass Data Center (NUBASE) and IUPAC CIAAW, via PubChem
Kegunaan isotop skandium
- Radioactive 46Sc is used as a non-absorbed isotopic reference material for determining digestibility, absorption in the gut, and secretion sites for nutrients associated with feed residues in ruminating animals (animals that chew their food repeatedly for an extended period of time).
- The radioactive isotope 46Sc has been used for sediment labeling to determine the transportation of sediments by water flow in rivers, estuaries, harbors, and seas. The half-life of 46Sc is about 84 days and when released into an estuary with similar grain density and grain size, a gamma spectrometer (instrument for measuring the intensity of gamma radiation versus the energy of each photon) can be used to measure the intensities of 46Sc in the sediments and the movement of the sediments can be determined,,.
- 46Sc is a beta emitter and has been used as a tracer in oil refinery crackers for crude oil (converting crude oil into gasoline and other lower-molecular weight hydrocarbon fractions). Its beta radiation enables the substance to be tracked as the oil travels. Due to its easily traceable properties, coastal engineers use 46Sc to develop dredging strategies and to design navigation channels based on silt movement.
- 46Sc is used in isotope-carrying antibodies for bonding with tumor-associated cell surface antigens (substances that causes the production of an antibody when introduced into the body, e.g. toxins, bacteria, and viruses). 46Sc is added to DTPA-derivatized (process by which a compound is chemically changed, producing a new compound that has properties more amenable to a particular analytical method) monoclonal antibodies and has been shown to target tumor cells, specifically in vivo, where it accumulates to high levels in the tumor (Fig. IUPAC.21.1),.
Isotop skandium lainnya
³⁵Sc, ³⁶Sc, ³⁷Sc, ³⁸Sc, ³⁹Sc, ⁴⁰Sc, ⁴¹Sc, ⁴²Sc, ⁴³Sc, ⁴⁴Sc, ⁴⁵Sc, ⁴⁷Sc, ⁴⁸Sc, ⁴⁹Sc, ⁵⁰Sc, ⁵¹Sc, ⁵²Sc, ⁵³Sc, ⁵⁴Sc, ⁵⁵Sc, ⁵⁶Sc, ⁵⁷Sc, ⁵⁸Sc, ⁵⁹Sc, ⁶⁰Sc, ⁶¹Sc, ⁶²Sc, ⁶³Sc