EPA Method B in the EPA methods list database. View all EPA methods. This article compares results from samples prepared and analyzed according to EPA Method B on a sector instrument with those from a. EPA Method B. Summit Environmental Technologies prides itself in its expansive testing capabilities in a variety of different fields. To find out if Summit.
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Place the K-D apparatus in a hot water bath so that the entire lower rounded surface of the flask is methoe with steam. Any non-aqueous liquid from multi-phase samples is combined with the solids and extracted in an SDS extractor. Soxhlet extract in g portions for 24 hours. Metbod samples, three 2- to 3-mL aliquots of solvent should be rinsed down the feed tube into a waste beaker. Ongoing precision and recovery. The references and bibliography at the end of Reference 13 are particularly comprehensive in dealing with the general subject of laboratory safety.
Section Safety Where possible, reagents are cleaned by extraction or solvent rinse.
If either acidification or addition of ethanol is utilized, the laboratory must perform the startup tests described in Section 9. An integrating flow meter is used to collect fpa composite samples. Gross losses to the laboratory ventilation system must not be allowed. May be prepared by extraction with methylene chloride. Each laboratory that uses this method must demonstrate the ability to generate acceptable results using the procedure in Section 9.
Summit Environmental Testing | EPA METHOD B
Place 30 to kethod mL of toluene in the receiver and to mL of toluene in the flask. Report results below the minimum level as not detected or as required by the regulatory authority. The method of reducing particle size to less than 1 mm is matrix-dependent.
In this case, alternate extraction and cleanup procedures in this method must be employed to resolve the interference.
Equivalent performance may be achieved using apparatus and materials other than those specified here. All sample processing steps that are to be used for processing samples, including preparation Section 11extraction Section 12and cleanup Section 13shall be included in this test.
Slowly and carefully admit air into the system. Store in a bottle with a fluoropolymer-lined screw-cap.
EPA Method 1613B
Save the bottle for further use. The extract is evaporated to dryness, and the lipid content is determined. It is also suggested that the laboratory perform personal hygiene monitoring of each analyst who uses this method and that the results of this monitoring be made available to the analyst. Isomer-Specific Separation of 2,3,7,8? Some extracts will not concentrate to 10 uL Section Additional cleanup of the extract may be required to remove the interferences.
Re-prepare, mehtod, clean up, and analyze per Sections Mention of trade names or commercial products does not constitute endorsement or recommendation for use. Use within 90 minutes of cooling. When not being used, standards are stored in the dark at room temperature in screw-capped vials with fluoropolymer-lined caps.
Start the GC column initial isothermal hold upon injection. Elute the interfering compounds epaa mL hexane and discard the eluate. The results of the analysis of the blank must meet the specifications in Section 9.
If more than mg of material remains, repeat the cleanup using a fresh anthropogenic isolation column.
Satisfactory cleaning may be accomplished by rinsing with. If all compounds meet the acceptance criteria, system performance is acceptable and analysis of blanks and samples may proceed. Dilute 10 uL of the precision and recovery I standard Section 7. Remove any non-aqueous liquid present and reserve the maximum amount filtered from the sample Section For aqueous samples containing greater than one percent!
This test is described in Section 9. One aliquot will serve as the method blank. E;a is soluble in water to approximately ppt and in organic solvents to 0. Under those conditions, sensitivity changes that might occur during the analysis can be more effectively monitored. Remove the Snyder column and rinse the flask and its lower joint into the concentrator tube with 1 to 2 mL of solvent.
The analytes are listed in Table 1. Return the column to the initial temperature for analysis of the next extract or standard. While holding a GMF filter above the SPE disk with tweezers, wet the filter with toluene and lay the filter on the SPE disk, making sure that air is not trapped between the filter and disk. Rinse the sample container twice with 1-mL portions of hexane and apply to the column.
The isomers and congeners of tetra- through octa- chlorodibenzo-p-dioxin. Softer particles can be reduced by grinding methof a Wiley mill or meat grinder, by homogenization, or in a blender.
After the aliquots are dry or if the sample cannot be dried, reduce the particle size using the procedures in Section The isomers and congeners of tetra- through octa- chlorodibenzofuran. Therefore, the performance of the method after such modifications must be verified by the procedure in Section 9.