Quick Links

Radioisotope properties and precautions

Select the radioisotope


 

      ALI = Annual Limit of Intake
      EQ = Exemption Quantity

      For more information on other radioisotopes go to the Canadian Nuclear Safety Commission (CNSC) website.

      Ca-45 - Properties and Precautions
      Radiotoxicity Low to medium
      Half life 163 days
      Emission Moderate Energy Beta (0.257 MeV)
      Range in air 52 cm
      Critical organs/tissue Bone
      Precautions Gloves, Lab coat, Aerosol control, Contamination control
      Shielding 3 mm, plexiglas (lucite shield)
      Monitor beta-probe, wipes counted by liquid scintillation counter
      ALI 30 (ingestion) and 9 (inhalation)
      EQ 1 MBq

      TOP OF PAGE

      C-14 - Properties and Precautions
      Radiotoxicity Low to medium
      Half life 5730 years
      Emission Moderate Energy Beta (0.156 MeV)
      Range in air 24 cm
      Critical organs/tissue Fatty tissue
      Precautions Gloves, lab coat, aerosol control, contamination control
      Shielding 3 mm, plexiglas (lucite shield)
      Monitor beta-counter, & wipes counted by liquid scintillation counter
      ALI 34 (ingestion) and 3000 (inhalation)
      EQ 100 MBq

      TOP OF PAGE

      Cr-51 - Properties and Precautions
      Radiotoxicity Medium to low
      Half life 28 days
      Emission Gamma (0.320 MeV), X-ray (E 0.752 MeV)
      Range in air Calculate
      Critical organs/tissue Large intestine
      Precautions Gloves, lab coat, lead shield, aerosol control, contamination control, dosimeter
      Shielding 7 mm, lead
      Monitor gamma & X-ray probe, wipes counted by gamma counter
      ALI 530 (ingestion) and 600 (inhalation)
      EQ 1 MBq

      TOP OF PAGE

      Co-57 - Properties and Precautions
      Radiotoxicity Medium to low
      Half life 271 days
      Emission Gamma (0.014 - 0.692 MeV), X-ray (0.006 MeV)
      Range in air Calculate
      Critical organs/tissue Large intestine
      Precautions Gloves, lab coat, lead shield, aerosol control, contamination control, dosimeter
      Shielding 3.2 mm, lead
      Monitor gamma & X-ray probe, wipes counted by gamma counter
      ALI 95 (ingestion) and 30 (inhalation)
      EQ 100 kBq

      TOP OF PAGE

      H-3 - Properties and Precautions
      Radiotoxicity Low
      Half life 12 years
      Emission Low Energy Beta (0.019 MeV)
      Range in air 6 mm
      Critical organs/tissue Body fluids
      Precautions Gloves, Lab coat, Aerosol control, Contamination control
      Shielding None
      Monitor Wipes counted by liquid scintillation counter
      ALI 1000 (ingestion and inhalation)
      EQ 1000 MBq

      TOP OF PAGE

      I-125 - Properties and Precautions
      Radiotoxicity Moderate
      Half life 60 days
      Emission Gamma (0.035 Mev), X-ray (0.027 - 0.032 MeV)
      Range in air Calculate
      Critical organs/tissue Thyroid gland
      Precautions Gloves, lab coat, lead Shield, aerosol control, contamination control, dosimeters. NB: If 50 MBq (9.35mCi) or more are used then thyroid monitoring must be done within 5 days of manipulation. Contact RSO at local 1538.
      Shielding 0.25 mm, lead
      Monitor gamma & X-ray probe, wipes counted by gamma counter
      ALI 1 (ingestion and inhalation)
      EQ 1 MBq

      TOP OF PAGE

      I-131 - Properties and Precautions
      Radiotoxicity Medium to low
      Half life 8.04 days
      Emission Beta (0.247-0.606 Mev), X-ray (0.030 MeV) & Gamma (0.030-0.723 MeV)
      Range in air 165 cm (for beta component)
      Critical organs/tissue Thyroid gland
      Precautions Gloves, Lab coat, Lead Shield, Aerosol control, Contamination control, Dosimeter
      Shielding 7 mm, lead
      Monitor beta, gamma & X-ray -probe, wipes counted by liquid scintillation or gamma counter
      ALI 1 (ingestion and inhalation)
      EQ 10 kBq

      TOP OF PAGE

      P-32 - Properties and Precautions
      Radiotoxicity Medium to low
      Half life 14 days
      Emission High Energy Beta (1.71 MeV)
      Range in air 720 cm
      Critical organs/tissue Bone
      Precautions Gloves, lab coat, plexiglass shield; Aerosol control; Contamination control; Dosimeters (whole body and/or extremity)
      NB: If 50 MBq (1.35 mCi) or more are used, then a ring dosimeter must be worn with the whole-body dosimeter.
      Shielding 2.5 cm, plexiglas (lucite shield)
      Monitor beta-counter, wipes counted by liquid scintillation counter
      ALI 8 (ingestion) and 7 (inhalation)
      EQ 10 kBq

      TOP OF PAGE

      P-33 - Properties and Precautions
      Radiotoxicity Medium to low
      Half life 25.4 days
      Emission Moderate Energy Beta (0.249 MeV)
      Range in air 46 cm
      Critical organs/tissue Bone
      Precautions Gloves, lab coat, aerosol control, contamination control
      Shielding 3 mm, plexiglas (lucite shield)
      Monitor beta-counter, wipes counted by liquid scintillation counter
      ALI 80 (ingestion) and 20 (inhalation)
      EQ 1 MBq

      TOP OF PAGE

      Na-22 - Properties and Precautions
      Radiotoxicity Medium to low
      Half life 2.6 years
      Emission Positron (0.546 MeV)
      Range in air 142 cm
      Critical organs/tissue Whole body
      Precautions Gloves, Lab coat, Lead Shield, Aerosol control, Contamination control, Dosimeter
      Shielding 7 mm, lead
      Monitor beta-probe, wipes counted by liquid scintillation or gamma counter
      ALI 6 (ingestion) and 10 (inhalation)
      EQ 10 kBq

      TOP OF PAGE

      S-35 - Properties and Precautions
      Radiotoxicity Medium to low
      Half life 87 days
      Emission Moderate Energy Beta (0.167 MeV)
      Range in air 30 cm
      Critical organs/tissue Testis
      Precautions Gloves, lab coat, aerosol control, contamination control
      Shielding 3 mm, plexiglas (lucite shield)
      Monitor beta-counter, wipes counted by liquid scintillation counter
      ALI 26 (ingestion) and 200 (inhalation)
      EQ 100 MBq