Update: 29 September, 2023
This document describes a new method developed by the U.S. Environmental Protection Agency (EPA) for the measurement of volatile organic compounds (VOCs) in drinking water. The method, known as EPA 524.3, is a direct update of the earlier version of EPA Method 524.2. Key differences include the use of solid acid preservatives, a revised target list, an option for use of selected ion monitoring (SIM), and more flexible guidance for optimizing purge-and-trap parameters. Varian, Inc.'s application lab has chosen to participate in a Secondary Laboratory Demonstration study conducted by EPA to help evaluate the new method. Participants are required to perform acceptable calibration analysis, provide precision and accuracy data, and establish Lowest Concentration Minimum Reporting Levels (LCMRLs) for select regulated compounds.
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Publication date: 11 June, 2012
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