Belerang-32 (³²S)

Data nuklida

Unsur

Belerang (S, Z = 16)

Nomor massa (A)

32

Proton (Z)

16

Neutron (N)

16

Massa atom

31.97207117354 ± 0.00000000141 u

Waktu paruh

Stabil

Mode peluruhan

Tidak meluruh

Kelimpahan alami

[0.9441, 0.9529]

Tahun penemuan

1920

Sumber data

IAEA Atomic Mass Data Center (NUBASE) and IUPAC CIAAW, via PubChem

Kegunaan isotop belerang

• The stable sulfur isotope-amount ratio n(34S)/n(32S) has been used to distinguish whether animal tissues grew in freshwater or in marine ecosystems. The isotopes do not fractionate (separate) substantially with trophic influences (the movement of sulfur through and into plant and animal systems), and the isotope-amount ratio n(34S)/n(32S) is usually substantially different between freshwater and marine environments. As an example, by analyzing sulfur isotope-amount ratios in bird feathers, the environment in which the bird was living when these feathers developed can be determined. This enables one to track bird habitats and migration patterns throughout the year (Fig. IUPAC.16.1).
• Molecules, atoms, and ions of the stable isotopes of sulfur possess slightly different physical and chemical properties, and they commonly will be fractionated during physical, chemical, and biological processes, giving rise to variations in isotopic abundances and in atomic weights. There are substantial variations in the isotopic abundances of sulfur in natural terrestrial materials (Fig. IUPAC.16.2). These variations are useful in investigating the origin of substances and studying environmental, hydrological, and geological processes,. The isotope-amount ratio n(34S)/n(32S) can be used to trace natural and anthropogenic sources of sulfur. Examples include studies of acid mine drainage, the cycling of sulfur in agricultural watersheds, groundwater contamination from landfills, and sources of salinity in coastal aquifers,,.
• The isotope-amount ratio n(34S)/n(32S) can be used to authenticate the dietary source of cattle. First, stable isotopes are measured to infer the dietary source of the cattle. Once the source of the diet is found, the isotopic compositions can be traced in certain muscle groups of the cattle and can be used to determine if the diet of the animal has been changed or if the feed is consistent with what the animal has been claimed to have been fed.

Isotop belerang lainnya

²⁶S, ²⁷S, ²⁸S, ²⁹S, ³⁰S, ³¹S, ³³S, ³⁴S, ³⁵S, ³⁶S, ³⁷S, ³⁸S, ³⁹S, ⁴⁰S, ⁴¹S, ⁴²S, ⁴³S, ⁴⁴S, ⁴⁵S, ⁴⁶S, ⁴⁷S, ⁴⁸S, ⁴⁹S

Pelajari

Kimia inti Simulasi peluruhan ³²S Bagan nuklida