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.
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Ca-45 - Properties and
Precautions
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Radiotoxicity
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Low to medium
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Half life
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163 days
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Emission
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Moderate Energy Beta (0.257 MeV)
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Range in air
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52 cm
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Critical organs/tissue
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Bone
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Precautions
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Gloves, Lab coat, Aerosol control, Contamination control
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Shielding
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3 mm, plexiglas (lucite shield)
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Monitor
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beta-probe, wipes counted by liquid scintillation counter
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ALI
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30 (ingestion) and 9 (inhalation)
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EQ
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1 MBq
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C-14 - Properties and
Precautions
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Radiotoxicity
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Low to medium
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Half life
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5730 years
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Emission
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Moderate Energy Beta (0.156 MeV)
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Range in air
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24 cm
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Critical organs/tissue
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Fatty tissue
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Precautions
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Gloves, lab coat, aerosol control, contamination control
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Shielding
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3 mm, plexiglas (lucite shield)
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Monitor
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beta-counter, & wipes counted by liquid scintillation counter
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ALI
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34 (ingestion) and 3000 (inhalation)
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EQ
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100 MBq
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Cr-51 - Properties and
Precautions
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Radiotoxicity
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Medium to low
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Half life
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28 days
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Emission
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Gamma (0.320 MeV), X-ray (E 0.752 MeV)
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Range in air
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Calculate
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Critical organs/tissue
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Large intestine
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Precautions
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Gloves, lab coat, lead shield, aerosol control, contamination control,
dosimeter
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Shielding
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7 mm, lead
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Monitor
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gamma & X-ray probe, wipes counted by gamma counter
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ALI
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530 (ingestion) and 600 (inhalation)
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EQ
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1 MBq
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Co-57 - Properties and
Precautions
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Radiotoxicity
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Medium to low
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Half life
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271 days
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Emission
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Gamma (0.014 - 0.692 MeV), X-ray (0.006 MeV)
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Range in air
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Calculate
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Critical organs/tissue
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Large intestine
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Precautions
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Gloves, lab coat, lead shield, aerosol control, contamination control,
dosimeter
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Shielding
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3.2 mm, lead
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Monitor
|
gamma & X-ray probe, wipes counted by gamma counter
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ALI
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95 (ingestion) and 30 (inhalation)
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EQ
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100 kBq
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H-3 - Properties and
Precautions
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Radiotoxicity
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Low
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Half life
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12 years
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Emission
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Low Energy Beta (0.019 MeV)
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Range in air
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6 mm
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Critical organs/tissue
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Body fluids
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Precautions
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Gloves, Lab coat, Aerosol control, Contamination control
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Shielding
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None
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Monitor
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Wipes counted by liquid scintillation counter
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ALI
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1000 (ingestion and inhalation)
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EQ
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1000 MBq
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I-125 - Properties and
Precautions
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Radiotoxicity
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Moderate
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Half life
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60 days
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Emission
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Gamma (0.035 Mev), X-ray (0.027 - 0.032 MeV)
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Range in air
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Calculate
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Critical organs/tissue
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Thyroid gland
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Precautions
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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.
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Shielding
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0.25 mm, lead
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Monitor
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gamma & X-ray probe, wipes counted by gamma counter
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ALI
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1 (ingestion and inhalation)
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EQ
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1 MBq
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I-131 - Properties and
Precautions
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Radiotoxicity
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Medium to low
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Half life
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8.04 days
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Emission
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Beta (0.247-0.606 Mev), X-ray (0.030 MeV) & Gamma (0.030-0.723 MeV)
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Range in air
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165 cm (for beta component)
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Critical organs/tissue
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Thyroid gland
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Precautions
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Gloves, Lab coat, Lead Shield, Aerosol control, Contamination control,
Dosimeter
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Shielding
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7 mm, lead
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Monitor
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beta, gamma & X-ray -probe, wipes counted by liquid scintillation or
gamma counter
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ALI
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1 (ingestion and inhalation)
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EQ
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10 kBq
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P-32 - Properties and
Precautions
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Radiotoxicity
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Medium to low
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Half life
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14 days
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Emission
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High Energy Beta (1.71 MeV)
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Range in air
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720 cm
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Critical organs/tissue
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Bone
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Precautions
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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.
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Shielding
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2.5 cm, plexiglas (lucite shield)
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Monitor
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beta-counter, wipes counted by liquid scintillation counter
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ALI
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8 (ingestion) and 7 (inhalation)
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EQ
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10 kBq
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P-33 - Properties and
Precautions
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Radiotoxicity
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Medium to low
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Half life
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25.4 days
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Emission
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Moderate Energy Beta (0.249 MeV)
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Range in air
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46 cm
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Critical organs/tissue
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Bone
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Precautions
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Gloves, lab coat, aerosol control, contamination control
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Shielding
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3 mm, plexiglas (lucite shield)
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Monitor
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beta-counter, wipes counted by liquid scintillation counter
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ALI
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80 (ingestion) and 20 (inhalation)
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EQ
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1 MBq
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Na-22 - Properties and
Precautions
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Radiotoxicity
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Medium to low
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Half life
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2.6 years
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Emission
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Positron (0.546 MeV)
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Range in air
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142 cm
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Critical organs/tissue
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Whole body
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Precautions
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Gloves, Lab coat, Lead Shield, Aerosol control, Contamination control,
Dosimeter
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Shielding
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7 mm, lead
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Monitor
|
beta-probe, wipes counted by liquid scintillation or gamma counter
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ALI
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6 (ingestion) and 10 (inhalation)
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EQ
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10 kBq
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S-35 - Properties and
Precautions
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Radiotoxicity
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Medium to low
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Half life
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87 days
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Emission
|
Moderate Energy Beta (0.167 MeV)
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Range in air
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30 cm
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Critical organs/tissue
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Testis
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Precautions
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Gloves, lab coat, aerosol control, contamination control
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Shielding
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3 mm, plexiglas (lucite shield)
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Monitor
|
beta-counter, wipes counted by liquid scintillation counter
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ALI
|
26 (ingestion) and 200 (inhalation)
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EQ
|
100 MBq
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