Sample volume, solvent type, ph adjustment and conditioning may be changed to adapt to specific methods as needed. Method 1664a also uses n hexane as the extraction solvent. Oil and grease and silica gel treated nhexane extractable material sgthem. Sampling instructions take caution with the preservative sulfuric acid is acidic.
Method information displayed is provided for informational purposes only. Method 1664, oil and grease, revision a hydroflotech. We promulgated method 1664a on may 14, 1999 64 fr 26316. Method 1664 is a performancebased method applicable to aqueous matrices that requires the use of nhexane as the extraction solvent and gravimetry as the determinative technique. Phaseout of production and cessation of import of ozonedepleting substances odss, including cfcs. The opr standard must be spiked with hexadecanestearic acid solution prepared from a separate source than the solution used for matrix spikes. Instructions for epa method 1664a bottle requirements clear 1 l with h 2 so 4 sampling location the location code that is identified on the water systems sampling plan. Final methodrevision a print version pdf 160 k, 28 pages. Method 1664 used normal hexane nhexane in place of cfc1. View actual epa method 1664 pdf file epa method 1664. Flush through the sampling point until main distribution water is.
Nonpolar material by extraction and gravimetry, describes the determination of oil and grease from liquid typically water samples. Epa method 1664aextraction of oil and grease from water. Learn more about acacia rigidula uses, effectiveness, possible side effects, interactions, dosage, user ratings and products that contain acacia rigidula. The laboratory is responsible for maintaining a safe work environment and a current awareness file of osha regulations regarding the safe. Plus or minus 2 standard s deviations of the average recovery r. Analytical method guidance for epa method 1664a implementation and use 40 cfr part 6 united states. No warranty express or implied is made as to the website accuracy, completeness, or applicability such as the age of a method and whether or not it applies to your project. It is used to determine certain volatile organic pollutants specific to the pharmaceutical manufacturing industry pmi that are amenable to purgeandtrap gas chromatographymass spectrometry gcms or direct aqueous injection gcms. Nonpolar material is the only approved epa method for the measurement of oil and grease. Alternative extraction and concentration techniques are allowed, provided that all performance specifications are met. A reference file of material safety data sheets msdss should be available to all personnel involved in these analyses. Oil and grease is considered a methoddefined parameter per the definition in the code of federal regulations.
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