EPA Method 8015C

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EPA Method 8015C:
Nonhalogenated Organics by GC-FID. Official Name: Nonhalogenated Organics Using GC/FID

Summary:
Depending on the analytes of interest, samples are introduced into the GC by a variety of techniques, including: purge-and-trap, direct injection of aqueous samples, injection of the concentrate from azeotropic distillation, vacuum distillation, or following solvent extraction. Analytes are detected by a flame ionization detector.

Scope:
This method determines the concentration of various nonhalogenated volatile and semivolatile organic compounds in surface water, ground water, and solid matrices. In addition, gasoline range organics and diesel range organics may also be analyzed by this method.

Citation:
SW-846 Update IVB

Interferences:
(A) Contamination: Sample contamination may occur by diffusion of volatile organics through the septum seal during shipment and storage. The analysis of trip blanks will identify this problem.(B) Matrix interferences: Since the FID is non-selective, there is a potential for the interference of non-target compounds.(C) Memory Interferences: Carryover may occur whenever high and low concentration samples are analyzed in sequence. Rinse the sample syringe or purging device between samples. Also, unusually concentrated samples should be followed by injection of a solvent blank.

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.

Maximum Holding Time:
See SW-846 Chapter Four for information

Media:
VARIOUS

Subcategory:
Organic

Concentration:
Not Available.

Sample Prep:
See Method 5000

Precision:
Example method performance data for non-purgeable volatiles in groundwater by azeotropic microdistillation (method 5031) are shown as examples and guidance. Performance data and related information are provided in SW-846 methods only as examples and guidance. The data do not represent required performance criteria for users of the methods. Instead, performance criteria should be developed on a project-specific basis, and the laboratory should establish in-house QC performance criteria for the application of this method.

Detection:
-

Revision Number:
Revision 3, Feb. 2007