Transcription of METHOD 7471A MERCURY IN SOLID OR …
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METHOD 7471A MERCURY IN SOLID OR …
CD-ROM7471A - 1 Revision 1 September 1994 METHOD 7471 AMERCURY IN SOLID OR semisolid waste ( manual COLD-VAPOR TECHNIQUE) SCOPE AND APPLICATION METHOD 7471 is approved for measuring total MERCURY (organic andinorganic) in soils, sediments, bottom deposits, and sludge-type materials. Allsamples must be subjected to an appropriate dissolution step prior to this dissolution procedure is not sufficient to dissolve a specific matrixtype or sample, then this METHOD is not applicable for that SUMMARY OF METHOD Prior to analysis, the SOLID or semi- SOLID samples must be preparedaccording to the procedures discussed in this METHOD . METHOD 7471, a cold-vapor atomic absorption METHOD , is based on theabsorption of radiation at the wavelength by MERCURY vapor. The mercuryis reduced to the elemental state and aerated from solution in a closed MERCURY vapor passes through a cell positioned in the light path of an atomicabsorption spectrophotometer.
cd-rom 7471a - 1 revision 1 september 1994 method 7471a mercury in solid or semisolid waste (manual cold-vapor technique) 1.0 scope and application
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