Summary Analytes Revision Data and Sites. Official Method Name. This method has 32 analytes associated with it. Antimony Antimony Sb Stibium.
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Summary Analytes Revision Data and Sites. Official Method Name. This method has 32 analytes associated with it. Antimony Antimony Sb Stibium. Arsenic Arsenic As. Barium Ba Barium. Beryllium Be Beryllium Glucinium. Cadmium Cadmium Cd. Calcium Ca Calcium. Chromium Chromium Cr. Cobalt Co Cobalt. Copper Copper Copper metallic Cu. Iron Fe Iron. Lead Lead Lead and compounds inorganic Lead and lead compounds Pb. Lithium Li Lithium.
Magnesium Magnesium Mg. Manganese Manganese Mn. Molybdenum Amperit Potassium K Potassium. Selenium Se Selenium Selenium and Compounds. Silver Ag Silver. Sodium Na Natrium Sodium. Strontium Sr Strontium. Thallium Thallium Tl. Thorium Th Thorium Thorium Tin Sn Tin. Vanadium V Vanadium Vanadium fume or dust. The Water Quality Portal contains sample results from sites that use this method. Select data: Sites only Sample results only. Sites where this method was used. Sample preparation procedure for spectrochemical determination of total recoverable elements.
Martin, T. Environmental Protection Agency Report, Revision 2. Solid and aqueous samples are prepared in a similar manner for analysis. Nitric and hydrochloric acids are dispensed into a beaker containing an accurately weighed or measured, well mixed, homogeneous aqueous or solid sample.
Aqueous samples are first reduced in volume by gentle heating. Then, metals and toxic elements are extracted from either solid samples or the undissolved portion of aqueous samples by covering the beaker with a watch glass and refluxing the sample in the dilute acid mixture for 30 minutes.
After extraction, the solubilzed analytes are diluted to specified volumes with ASTM Type I water, mixed and either centrifuged or allowed to settle overnight before analysis. This method provides sample preparation procedures for the determination of total recoverable analytes in groundwaters, surface waters, drinking waters, wastewaters, and, with the exception of silica, in solid type samples such as sediments, sludges and soils.
In sample preparation, contamination is of prime concern. The work area, including bench top and fume hood, should be periodically cleaned in order to eliminate environmental contamination. Chemical interferences are matrix dependent and cannot be documented previous to analysis. Boron and silica from the glassware will grow into the sample solution during and following sample processing.
When quartz beakers are not available for extraction of solid samples, to reduce boron contamination, immediately transfer an aliquot of the diluted extract to a plastic centrifuge tube for storage until time of analysis. A series of laboratory reagent blanks can be used to monitor and indicate the contamination effect.
Each laboratory determining total recoverable elements is required to operate a formal quality control QC program. The minimum requirements of a QC program consist of an initial demonstration of laboratory capability, and the analysis of laboratory reagent blanks, fortified blanks and quality control samples as a continuing check on performance.
The laboratory is required to maintain performance records that define the quality of data generated. Specific instructions on accomplishing the described aspects of the QC program are discussed in the analytical methods used. For determination of total recoverable elements in aqueous samples, the samples must be acid preserved prior to aliquoting for either sample processing or determination by direct spectrochemical analysis.
Solid samples require no preservation prior to analysis other than storage at 4 o C. There is no established holding time limitation for solid samples. For aqueous samples, a field blank should be prepared and analyzed as required by the data user. Use the same container and acid as used in sample collection.
EPA Method 200.2
EPA Method Please call for availability. Official Name: Sample preparation procedure for spectrochemical determination of total recoverable elements Summary: Solid and aqueous samples are prepared in a similar manner for analysis. Nitric and hydrochloric acids are dispensed into a beaker containing an accurately weighed or measured, well mixed, homogeneous aqueous or solid sample.
EPA Methods 200 Series
How should a sample intended for total metals analysis be digested?