TM23-02 Discontinuation of surrogate compound tetrahydrofuran-d8 and addition of surrogate compound 1,3-dioxane to National Water Quality Laboratory schedules 4437 and 4447 that use Method O-4437-16
linkThis memorandum alerts users of the U.S. Geological Survey (USGS) National Water Quality Laboratory (NWQL) of a modification to USGS Method O-4437-16: Determination of heat purgeable and ambient purgeable volatile organic compounds in water by gas chromatography/ mass spectrometry [GC/MS] (Rose and others, 2016).