NEMI Method Summary

Method Summary Information

Method Number: 8091 (by GC-ECD) Media: VARIOUS
Revision: Revision 0, December 1996
Method Source: U.S. EPA Office of Solid Waste
Subcategory: ORGANIC Analytes in this method
Official Name: Nitroaromatics and Cyclic Ketones by Gas Chromatography
Descriptive Name Nitroaromatics and Cyclic Ketones in Water, Soil, and Waste by GC-ECD or GC-NPD
Source Info: U.S. EPA Office of Solid Waste (OSW) Methods Team
Ariel Rios Bldg. (5307W)
1200 Pennsylvania Ave. NW
Washington, DC 20460
Phone: 703-308-8855
Fax: 703-308-0511
Citation: SW-846 On-line
119214 Byte file
Brief Method
Summary:
 Samples are extracted and cleaned up (according to sample matrix) and then are directly injected into a gas chromatograph to be analyzed by wide bore capillary columns with either an electron capture detector or nitrogen-phosphorous detector.
Scope And
Application:
 This method determines the concentration of nitroaromatics and cyclic ketones in water, soil, and waste matrices by using wide-bore, open-tubular, capillary column gas chromatography with either electron capture detection or nitrogen-phosphorus detection.
Applicable
Conc Range:
 Not Available.
Interferences: (A) Memory Interferences: Carryover may occur whenever high and low concentration samples are analyzed in sequence. For prevention, rinse the sample syringe between samples with solvent. Also, unusually concentrated samples should be followed by the analysis of a solvent blank. Additional solvent blanks interspersed with the sample extracts should be analyzed whenever a solvent blank indicates cross-contamination.
(B) Coeluting Compounds: Some compounds coelute on either one or both columns, in which case, they must be reported as coeluting. The samples may be reanalyzed by GC/MS.
(C) Electronegative Compound Interferences: Interferences may be caused by halogenated compounds, phthalates, and other oxygenated compounds, in which case, second column or GC/MS confirmation is necessary to ensure proper analyte identification.
QC Requirements: Refer to Chapter One and Methods 8000, 3500, and 5000 for specific QC procedures. Procedures include: validation of sample preparation, introduction, and analysis, initial demonstration of proficiency, calibration verification, evaluation of retention times, analysis of method blanks, matrix spikes, duplicates, surrogates, and laboratory control samples.
Sample Handling: See SW-846 Chapter Four for information. See the introductory material to this chapter, "Organic Analytes", Section 4.1. Extracts must be stored in the dark at or below 4oC.
Max Holding Time:
 Aqueous samples - 7 days (sample), 40 days (extract). Solid samples - 14 days (sample), 40 (extract). Also, see SW-846 Chapter Four for information.
Sample Prep Met Methods 3500, 3510, 3520, 3600, 3620, 36
Relative Cost: $201 to $400
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