1. U.S. EPA, Method 245.1, Determination of mercury in wastewater by cold vapor atomic absorption spectrometry, Revision 3.0, U.S. Environmental Protection Agency Office of Research and Development Environmental Systems Monitoring Laboratory, Cincinnati OH (1994) 188. https://www.epa.gov/sites/default/files/2015-06/documents/epa-245.1.pdf.
2. Method 524.3, Measurement of Purgeable Organic Compounds by Capillary Column Gas Chromatography /mass spectrometry,2009