Radionuclides in Drinking Water
For Provinces other than Ontario
Maxxam can provide determinations for over 70 radionuclides in drinking water for compliance to Canadian or U.S. or WHO guidelines.
Water samples may be initially screened for radioactivity using techniques for gross alpha and gross beta activity determinations, subject to the limitations of the method. Compliance with the guidelines may be inferred if the measurements are less than 0.5 Bq/L for gross alpha activity and less than 1 Bq/L for gross beta activity.
|Gas Flow Proportional Counting||0.1 Bq/L|
If screening levels are exceeded, Maxxam can provide cost-effective recommendations for identification and quantification of the specific radionuclides. Lower detection limits and all other drinking water radioisotopes are available.
|Radionuclide(s)||Method||Detection Limit||Federal MAC|
|Tritium||Liq. Scint. Counting||100 Bq/L||7000 Bq/L|
|Radium-226||Alpha-Spectrometry||0.01 Bq/L||0.6 Bq/L|
|Lead-210||Beta-Counting||0.1 Bq/L||0.2 Bq/L|
|Iodine-131||Gamma Spectrometry||1 Bq/L||6 Bq/L|
|Cesium-137||Gamma Spectrometry||1 Bq/L||10 Bq/L|
|Strontium-90||Beta-Counting||0.2 Bq/L||5 Bq/L|
|Total U-238||Neutron Activation||1 ug/L||20 ug/L|
For more information see the Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Radiological Parameters.