Nuklida · radioaktif
Fosforus-33 (³³P)
Fosforus-33 (³³P) adalah isotop radioaktif fosforus dengan 15 proton dan 18 neutron (nomor massa 33). Waktu paruhnya 25,35 hari (± 0,11 hari), meluruh terutama lewat peluruhan beta minus (β⁻).
Data nuklida
- Unsur
- Fosforus (P, Z = 15)
- Nomor massa (A)
- 33
- Proton (Z)
- 15
- Neutron (N)
- 18
- Massa atom
- 32.971725692 ± 0.00000117 u
- Waktu paruh
- 25,35 hari (± 0,11 hari)
- Mode peluruhan
- Peluruhan beta minus (β⁻) ( 100 %)
- Inti anak
- Belerang-33 (³³S)
- Tahun penemuan
- 1951
- Sumber data
- IAEA Atomic Mass Data Center (NUBASE) and IUPAC CIAAW, via PubChem
Kegunaan isotop fosforus
- 32P has been used as a tracer to help determine phosphorus nutrient cycling in eutrophied lakes (lakes rich in organic and mineral nutrients commonly leading to the excessive growth of phytoplankton, a self-feeding water organism) (Fig. IUPAC.15.1). In one experiment, phosphoric acid labeled with 32P was added to a lake that had been experimentally eutrophied. 32P was measured in microphytoplankton (plankton visible only with a microscope), phytoplankton, and zooplankton (tiny animals that live suspended in fresh or salt water), and the amount of incorporated 32P was determined. 33P has been used to better understand phosphorus dynamics in the environment at the sediment-surface level. Phosphorus is a necessary nutrient for many biota (the plant and animal life of a particular habitat, region, or geological period). Understanding bioavailability and sorption (bonding) of this nutrient to particles in soil is important for understanding ecosystem health. Organic and inorganic phosphorus substrates isotopically labeled with 33P can be tracked within a sediment system to determine their transport properties and availability to biota.
Isotop fosforus lainnya
²⁴P, ²⁵P, ²⁶P, ²⁷P, ²⁸P, ²⁹P, ³⁰P, ³¹P, ³²P, ³⁴P, ³⁵P, ³⁶P, ³⁷P, ³⁸P, ³⁹P, ⁴⁰P, ⁴¹P, ⁴²P, ⁴³P, ⁴⁴P, ⁴⁵P, ⁴⁶P, ⁴⁷P