EPA Method 8011 Instrumentation Guide
EPA Method 8011 determines 1,2-dibromoethane (EDB) and 1,2-dibromo-3-chloropropane (DBCP) in drinking water and groundwater. A 35 mL sample is extracted with 2 mL of hexane, and 2 µL of the extract is injected into a gas chromatograph with a linearized electron capture detector (GC-ECD).
The method has a working range of about 0.03 to 200 µg/L and a reported method detection limit (MDL) of 0.01 µg/L for each analyte. Actual detection limits depend on the GC system, sample matrix, and calibration.
Looking for a GC-ECD system for EPA Method 8011? Browse refurbished GC systems or request a configuration quote.
EPA Method 8011 Summary
| Item | Detail |
|---|---|
| Method | SW-846 Method 8011, Revision 0, July 1992 |
| Analytes | EDB (CAS 106-93-4); DBCP (CAS 96-12-8) |
| Matrices | Drinking water and groundwater |
| Technique | Microextraction with GC-ECD |
| Sample and solvent | 35 mL sample; 2 mL hexane |
| Injection | 2.0 µL |
| Working range | About 0.03 to 200 µg/L |
| MDL | 0.01 µg/L for each analyte |
| Extraction and analysis time | 30 to 50 minutes per sample |
| Column 1 Value 9 | Column 2 Value 9 |
Other compounds or matrices require precision and accuracy data on actual samples, plus qualitative confirmation by GC/MS.
Instrument requirements
The GC must be capable of temperature programming. It should have a linearized ECD and a capillary column splitless injector. An autosampler is strongly recommended, although manual injection with the solvent flush technique is allowed.
| Setting | Column A (primary) | Column B (confirmation) |
|---|---|---|
| Column | 30 m × 0.32 mm ID fused silica, 0.25 µm film | 30 m × 0.32 mm ID fused silica, 0.25 µm film |
| Phase | Durawax-DX 3 or equivalent | DB-1 or equivalent |
| Injector | 200 °C | 200 °C |
| Detector | 290 °C | 290 °C |
| Carrier gas | Helium, 25 cm/sec | Helium, 25 cm/sec |
| Initial oven | 40 °C, hold 4 min | 40 °C, hold 4 min |
| Ramp | To 190 °C at 8 °C/min | To 270 °C at 10 °C/min |
| Final hold | 25 min, or until analytes elute | 10 min, or until analytes elute |
| EDB retention time | 9.5 min | 8.9 min |
| DBCP retention time | 17.3 min | 15.0 min |
Column A is the primary analytical column. Column B provides confirmation when GC/MS is not available.
Know the configuration you need? Request an EPA 8011 GC-ECD quote.
What to look for in a refurbished GC-ECD system
The right refurbished system combines the required hardware with evidence that it performs reliably. Use these checks when comparing systems.
| System area | Method 8011 need | What to check |
|---|---|---|
| GC and oven | Temperature programming from 40 °C up to 270 °C for Column B | Oven control, temperature ramps, and retention time stability |
| Inlet | Capillary column splitless injection at 200 °C | Splitless capability and leak-tight pneumatics |
| Detector | Linearized ECD at 290 °C | ECD condition, licensing, and transfer requirements |
| Autosampler | Automated 2.0 µL injections strongly recommended | Injection repeatability and compatibility with the GC |
| Columns | Primary and confirmation columns | Whether Column A, Column B, or a confirmed equivalent is included |
| Carrier gas | Helium at 25 cm/sec | Gas connections and flow control |
| Software | Calibration, peak response, and reporting | Included workstation and data system |
| Documentation | The lab must prove system performance | Test reports, calibration data, and configuration records |
Need help comparing systems? Tell our team about your sample volume, confirmation approach, and preferred platform. Talk to an instrument specialist or call (844) AMP-TECH.
Example GC-ECD configurations
The platforms below are examples that may be configured for EPA Method 8011. The method names no required GC brand or model, so your choice can reflect budget, platform preference, and service needs.
| Platform | Configuration for Method 8011 | Key Benefits for EPA 8011 |
|---|---|---|
| Splitless-capable inlet, linearized ECD, 7650A autosampler | A modern platform with electronic pneumatic control and automated injection. | |
| Split/splitless inlet, linearized ECD, 7693 autosampler | Dual split/splitless inlets can support separate primary and confirmation channels when configured with two ECDs. | |
| Splitless-capable inlet, linearized ECD, 7693 autosampler | Supports multiple oven ramps, well beyond the single ramp used in Method 8011, and the 7693 autosampler supports automated injections. | |
| Splitless-capable inlet, linearized ECD, 7693 autosampler | Agilent lists a micro-ECD option, and its oven ramp capability exceeds the method’s 8–10 °C/min programs. | |
| Splitless-capable inlet, linearized ECD, 7693 autosampler | Electronic pneumatic control and precise oven ramping support repeatable runs. The listed base system can be configured with a detector. | |
| Split/splitless inlet, linearized ECD, 7683B autosampler | A lower-cost starting point with an autosampler and split/splitless inlet. |
Some listed systems use other detectors, but our team can help you plan an EPA Method 8011 configuration. We’ll review ECD options, columns, helium requirements, and your confirmation approach before you buy.
Don’t see the right configuration in the store? Tell us what you need, and we’ll check the available options.
Choosing a configuration
Start with how your lab will inject samples and confirm results.
- Routine batches: choose an autosampler for 2.0 µL injections, as the method strongly recommends.
- Column confirmation: plan for both the primary and confirmation columns.
- GC/MS confirmation: a GC/MS can replace Column B confirmation, but the primary analysis remains GC-ECD. Browse refurbished GC/MS systems.
- Other compounds or matrices: plan for additional precision, accuracy, and GC/MS confirmation data.
Amptius Certified Refurbished Instruments
AMP Tech offers refurbished analytical instruments and can help you configure a refurbished GC-ECD system for EPA Method 8011. Amptius Certified refurbished instruments go through a six-stage certification process, including repair, analytical testing, and documentation before shipment, giving your lab a lower-cost alternative to buying new.
Certified instruments include a 6-month limited warranty covering parts and labor for covered defects in materials or workmanship.
AMP Guard Service Plans
For support beyond the warranty, AMP Guard offers optional service plans with remote support, service facility repair, and on-site options. Coverage depends on the plan and instrument.
Request a quote with your sample volume, confirmation approach, and preferred platform. Our documentation and technical support can help your team prepare for method validation and ongoing QC.
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