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Isotopes & radiological parameters

Analysis of isotopes, isotope ratios, & radiological parameters

Measurements of isotope ratios, the concentration of specific isotopes, and general radiological parameters serve several purposes in environmental projects.

Examples include the use of isotope ratios to identify contamination sources, the concentration of naturally occurring harmful compounds, like Radon in groundwater, and identification of the increased level of radioactive metals in connection with industrial activity such as mining and nuclear power plants.

Portfolio & methods

ALS has become the leading laboratory group globally for isotope and radiological services for the environmental industry.

Our laboratories follow standard methods where available, but we also utilize many in-house developed methods in our analytical portfolio to obtain the best results possible.

Instrumentation used for testing include:

  • Gamma Spectroscopy
  • Liquid Scintillation
  • Gas Flow Proportional Counting
  • Alpha Scintillation Methods
  • ICP-SFMS
  • MC-ICP-SFMS


Analyses provided by ALS include:

Chemical Symbol  Name  Isotopes 
Pb  Lead  204, 206, 207, 208 
Pb  Lead  210 
Uranium  234, 235, 236, 238 
Pu  Plutonium  239, 240 
Pu  Plutonium  241 
Sr  Strontium  86, 87 
Sr  Strontium  89, 90 
Boron  10, 11 
Nd  Neodymium  146, 148 
Os  Osmium  187, 188, 189, 190, 192 
Re  Rhenium  185, 187 
Si  Silicon  28, 29 (30) 
Mg  Magnesium  24, 25, 26 
Fe  Iron  54, 56, 57 
Fe  Iron  55 
Ni  Nickel  60, 62 
Ni  Nickel  63 
Zn  Zink  64, 66, 68 
Cu  Copper  63, 65 
Mo  Molybdenum  92, 94, 95, 96, 97, 98 
Cd  Cadmium  110, 112, 113, 114 
Hg  Mercury  199, 200, 201, 202 
Tl  Thallium  203, 205 
Ra  Radium  226, 228 
Th  Thorium  230, 232 
Li  Lithium  6, 7 
Ag  Silver  107, 109 
Carbon  14 
Iodine  129 
Tc  Technetium  99 
Alpha Isotopics including Am, Np, Pu, Po, Th, U, Cm
Gross alpha-beta



Frequently asked questions