EPA Method 610

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EPA Method 610:
Polynuclear Aromatic Hydrocarbons

Summary:
A measured volume of sample, approximately 1L, is extracted with methylene chloride using a separatory funnel. The methylene chloride extract is dried and concentrated. The extract is then sepearated by HPLC or GC. Ultraviloet (UV) and fluoresence detectors are used with HPLC to identify and measure PAHs. A flame ionization detector is used with GC.

Scope:
This method allows for determination of polynuclear aromatic hydrocarbons (PAHs) in municipal and industrial discharges as provided under 40 CFR 136.1.

Citation:
EPA Method Guidance CD-ROM (includes MCAWW Methods, and most current EPA Methods)

Interferences:
(1) Method interferences caused by contaminants in solvents, reagents, glassware, and other sample processing hardware that lead to discrete artifacts and/or elevated baselines in the chromatograms. (2) Matrix interferences caused by contaminants co-extracted from the sample.

QC Requirements:
reagent blanks (RB), quality control samples (QCS)

Media:
WATER

Subcategory:
Organic

Concentration:
DL - * (* Upper detection limit is defined as the highest calibration point, as determined by analyst).

Precision:
The precision and accuracy values were determined using regression equations derived from a 16 laboratory validation study. The study determined analytes using reagent water, drinking water, surface water, and three industrial wastewaters with known additions at six concentrations over the range 0.1 to 425 ?g/L. Single operator precision, overall precision, and accuracy were found to be directly related to the concentration of the parameter and essentially independent of the sample matrix.

Detection:
MDLs determined per 40 CFR part 136, Appendix B.

Revision Number:
40 CFR Part 136, Appendix A (Current Edition)

Test Description:
Polynuclear Aromatic