EPA Method 504.1

ALS - Columbia offers EPA Method 504.1 testing at these laboratories:

Kelso Kelso, Washington Laboratory
Rochester Rochester, New York Laboratory

Method information displayed is provided for informational purposes only. No warranty (express or implied) is made as to the website accuracy, completeness, or applicability (such as the age of a method and whether or not it applies to your project). Please contact us for assistance. Analytical testing dots

PDF IconView Actual EPA Method 504.1 (PDF File)

EPA Method 504.1:
1,2-Dibromoethane (EDB), 1,2-Dibromo-3-Chloropropane (DBCP), and 1,2,3- Trichloropropane (123TCP) in Water by Microextraction and Gas Chromatography - Revision 1.1.

A 35-mL sample is extracted with 2-mL of hexane. The concentrations of analytes in the extract are measured using a gas chromatography (GC) system equipped with a linearized electron capture detector (ECD).

This method determines EDB, DCBP, and 123TCP (analytes) in finished drinking water and groundwater.

Methods for the Determination of Organic Compounds in Drinking Water - Supplement III (EPA/600/R-95-131)

(A) Solvent contamination: Use high purity solvents, and test solvents to prevent contamination.(B) Extracted interferences: Interference can occur from extracted non-target compounds, with retention times similar to target compounds.(C) DBCM Contamination: DBCM is a common disinfection byproduct which elutes near the EDB retention time window, and can obscure the EDB signal.

QC Requirements:
Initial demonstration of laboratory capability, followed by field reagent blanks (FRB), laboratory reagent blanks (LRB), laboratory fortified blanks (LFB), laboratory fortified sample matrix (LFM), and quality control samples (QCS). A MDL for each analyte must also be determined.

Maximum Holding Time:
14 days; extracts up to 24 hours.



0.03 - 200 ug/L

Precision and accuracy values were calculated from seven replicate analyses of fortified reagent water in a single laboratory. Additional data are available in the method.

MDLs were determined using the standard deviation of 8 replicate analyses of an analyte-fortified reagent water sample multiplied by the t-value for 7 degrees of freedom at the 99% confidence level. Detailed instructions for how MDLs are determined are found at 40 CFR part 136, Appendix B.

Revision Number:
Revision 1.1, 1995

Test Description:
EDB, DBCP, 123TCP by

Report Number:

Instrument used for this test:

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At least 3 analytes can be tested by ALS - Columbia using EPA Method 504.1. Please contact us for all available analytes which can be tested by EPA Method 504.1.

AnalyteCAS Number
1,2-Dibromo-3-chloropropane (DBCP)96-12-8

Examples:  8260

Examples:  Dioxin
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