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Sulfur 35. Characteristics. Radioactive half-life: 87.4 days Decay mechanism: Beta emission Energy: Emax = 167 keV Eavg = 49 keV Contamination monitoring: Thin window Geiger-Mueller detector, liquid scintillation counter for wipe surveys Dosimetry : Urinalysis. Decay Table.

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characteristics
Characteristics
  • Radioactive half-life: 87.4 days
  • Decay mechanism: Beta emission
  • Energy: Emax = 167 keV

Eavg = 49 keV

  • Contamination monitoring: Thin window Geiger-Mueller detector, liquid scintillation counter for wipe surveys
  • Dosimetry: Urinalysis
volatility
Volatility
  • Radiolysis of S-35 labelled amino acids may lead to the release of S-35 labelled volatile impurities. Delivery vials should therefore be opened in a fume hood
stabilizers
Stabilizers
  • The addition of stabilizers (buffers) will reduce, but not eliminate, the evolution of S-35 volatiles from tissue culture media. Incubators should be checked for contamination after using S-35 methionine or other volatile compounds.
differentiation difficulty
Differentiation Difficulty
  • S-35 may be difficult to distinguish from C-14. If both nuclides are being used in the same laboratory, establish controls to ensure they are kept separate. If "unknown" contamination is found, treat it as C-14.
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