United States Environmental Protection Agency Office of Water 4303 EPA-821-R-99-005 May 1999 v°/EPA Method 1631, Revision B: Mercury in Water by Oxidation, Purge and Trap, and Cold Vapor Atomic Fluorescence Spectrometry Most all environmental methyl mercury analyses is a variation on the same theme demonstrated in the EPA draft method. The US EPA has set a limit for mercury in drinking water of 2 µg/L or 2 ppb. . The cold vapor technique is the only EPA approved method for determining mercury at this level . Sampling Instructions for Low Level Mercury (EPA 1631E) The purpose of this document is to provide proper techniques for the collection, storage and shipment of samples in a way that minimizes contamination from external sources. Methods for the Chemical Analysis of Water and Wastes (MCAWW) (EPA/600/4-79/020) Citation Information: 'EPA Methods and Guidance for Analysis of Water, Version 2.0' This CD-ROM was developed by the USEPA (EPA) Office of Water (OW) to increase public access to EPA wastewater and drinking water test methods. Measurement of mercury by this Method is by cold-vapor atomic fluorescence spectrometry (CVAFS), a brominating digestion which provides minimal interference, and the use of ultra-pure argon as carrier gas. The US EPA determined (based on 1999 CANA cremation rates) that all US crematories, together, would have produced a total of 238 lbs. Method 1631, Revision E: Mercury in Water by Oxidation, Purge and Trap, and Cold Vapor Atomic Fluorescence Spectrometry. If we update the mercury emissions levels to include both the US and Canada using 2004 cremation rates, the mercury emissions would be approximately 320 lbs. Method IO-5.0 Chapter IO-5 Vapor and Particulate Mercury Mercury Page 5.0-2 Compendium of Methods for Inorganic Air Pollutants June 1999 1.7 Previous methods used to collect particulate Hg included trapping particles on quartz wool, which was susceptible … of mercury emissions in 1999. Method 245.7 was developed to provide reliable measurements of mercury at EPA WQC levels. EPA-821-R-02-019. The Cold Vapor Techinque The processes occurring in the mercury cold vapor technique are simple but they can be affected by numerous factors. 9.2.3 EPA Method 102-Determination of Particulate and Gaseous Mercury Emissions from Chlor-Alkali Plants-Hydrogen Streams (40 CFR, Part 61, 1992) ..... 9-4 9.3 MULTIPLE METALS SAMPLING TRAINS ..... 9-4 9.3.1 Method 0012-Methodology for the Determination of Metals Emissions EPA draft Method 1630 for methyl mercury analysis is a very sensitive technique using an atomic fluorescence detector for sub nanogram per liter quantitation of methyl mercury in waters. Acknowledgements Frank Schaedlich & Dan Schneeberger Tekran, Inc. Robert Stevens & Tom Atkeson Florida Department of Environmental Protection Eric Prestbo Frontier Geosciences, Inc. Method 7471A, Revision 1 (1994) (PDF) (6 pp, 141 Kb) MERCURY IN SOLID OR SEMISOLID WASTE (MANUAL COLD-VAPOR TECHNIQUE) Method 7741, Revision 0 (1986) (PDF) (5 pp, 1.28 Mb) U.S. EPA Office of Research and Development, RTP, NC Methods for Ambient Speciated Mercury Monitoring. Please read all instructions prior to sampling. U.S. Environmental Protection Agency, Office of Water, August 2002, 38 p.