An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Environmental Sampling and Analytical Methods (ESAM) Program

ORISE Method AP1: Gross Alpha and Beta for Various Matrices


ORISE, Oak Ridge Associated Universities (ORAU). 2001. “Method AP1: Gross Alpha and Beta for Various Matrices.”Laboratory Procedures Manual for the Environmental Survey and Site Assessment Program.


Analytical Method


EPA’s Selected Analytical Methods for Environmental Remediation and Recovery (SAM) lists this method for gross alpha and gross beta determination of americium-241; californium-252; cesium-137; cobalt-60; curium-244; europium-154; iridium-192; neptunium-239; plutonium-238 and -239; polonium-210; radium-226; ruthenium-103 and -106; strontium-90; technetium-99; thorium-227, -228, -230 and -232; and uranium-234, -235 and -238 in soil, sediment and vegetation.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.