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 www.epa.gov. 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 This website is no longer updated and links to external websites and some internal pages may not work.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 »

SW-846 Test Method 9014: Cyanide in Waters and Extracts Using Titrimetric and Manual Spectrophotometric Procedures

The following document provides information on the method used for measuring free (non-complexed) cyanide and hydrocyanic acid in drinking water, natural surface waters, domestic and industrial wastewaters, and in soil extracts.

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