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.
|Published (Last):||20 June 2011|
|PDF File Size:||4.75 Mb|
|ePub File Size:||18.8 Mb|
|Price:||Free* [*Free Regsitration Required]|
One of these aliquots will serve as the method blank. The requirements for establishing method equivalency are given in Section 9. Collect the eluant for reuse. Meeting the performance requirements of this method is the responsibility of the methld.
The most frequently encountered interferences are chlorinated biphenyls, methoxy biphenyls, hydroxydiphenyl ethers benzylphenyl ethers, polynuclear aromatics, and pesticides.
Shake for 2 minutes with periodic venting into a hood. Increasing the strengths of the acid and basic silica gel may also require different volumes of hexane than those specified above to elute the analytes off the column. The operating conditions in Section After extraction, 37Q4-labeled 2,3,7,8-TCDD is added to each extract to measure the efficiency of the cleanup process.
Fire-polish both ends and flare both’ ends if desired. It is suggested that the QC Check Sample be analyzed at least quarterly. An integrating flow meter is used to collect proportional composite samples. The K-D technique is used for solvents such as methylene chloride and hexane. Additional information on laboratory safety can be found in References If calibration ,s not verified, the system shall be recalibrated using the calibration solution, and the previous 20 samples shall be re-extracted and cleaned up using the calibrated GPC system.
One liter of aqueous samples i containing one percent solids will contain 10 grams of solids. After filtration, the particles and filter are extracted using the SDS procedure in Section Under those conditions, sensitivity changes that might occur during the analysis can be more effectively monitored. CS, January 15, Details available from the U.
One mL each are required for the blank and OPR with each matrix in each batch. Ongoing precision and recovery.
Procedures for dilution are given in Section Mechanical techniques may still be necessary to complete the phase separation. Rinse the sample container twice with 1-mL portions of hexane and apply to the column.
R,nse the sample container twice with 1-mL portions of hexane and apply separately to the column. Reduce the volume to approximately yL.
EPA Method 1613B
Additional cleanup of the extract may be required to remove the interferences. Assistance in evaluating the health hazards of particular laboratory conditions may be obtained from certain consulting laboratories and from State Departments of Health or Labor, many of which have an industrial health service. If the sampler uses a peristaltic pump, a minimum length of compressible silicone rubber tubing may be used in the pump only.
Glassware with removable parts, particularly separatory funnels with fluoropolymer stopcocks, must be disassembled prior to detergent washing. The speed and intensity of shaking action should also be adjusted to minimize the methoc of breakage.
Summit Environmental Testing | EPA METHOD B
Prewet the column by adding approximately 1 mL of solvent through 1613h top. In this event, adjust the GC and repeat the verification test Section Store in a dessicator. A secondary containment system around the shaker is suggested to prevent the spread of acid and solvents in the event of such a breakage.
Open the stopcock until the extract is within 1 mm of the sodium sulfate. When whole fish analysis is necessary, the entire fish is homogenized. Coarse solids are ground or homogenized. Start the Kethod column initial mfthod hold upon injection. Report i the percent solids so that the result may be corrected.
All specifications are given as concentration in the final extract, assuming a nL volume. Store in a bottle with a fluoropolymer-lined screw-cap. Repeat the base washing until no color is visible in the aqueous layer, to a maximum of four washings. Given the cost of disposal, it is prudent to minimize solvent wastes. The solvent evaporation techniques used in this method are amenable to solvent recovery, and 1613g is recommended that the laboratory recover solvents wherever feasible.
If all compounds meet the acceptance criteria, calibration has been verified and analysis of standards and sample extracts ea proceed. Cut paper to simulate the surface area of the paper sample being tested. The volume injected must be identical to the volume used for calibration Section Only glass or fluoropolymer tub- ing shall be used.
If SPE is not to be used and the sample contains visible particles, proceed to the following section for filtration of particles. The analytes are listed in Table 1.