This method is for the analysis of ethylene dibromide by GC/ECD in ambient air. The working range is 0.0003 to 1ppm (0.002 - 8 mg/m³) for a 25 L air sample. The sample is collected on charcoal sorbent tubes and analyzed using GC/ECD after desorption in 99:1 benzene:methanol (v/v). Note: This method revises P&CAM 260. Method S104 (not revised) uses a less sensitive FID.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | Two weeks from sampling to analysis if kept at or below -25°C |
| Preservatives: | Ship on dry ice at -25°C or below |
| Required Preps: | Solid sorbent tube: coconut shell charcoal, 100 mg / 50 mg, 7cm x 6mm OD x 4mm ID |
| Collection Method: | Solid sorbent tube: 0.1 - 25 L @ 0.02 - 0.2 L/min. |
| Analytical Methodology: | GC, Nickel Electron Capture Detector |
| Documentation: | 
1008
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| 1,2-Dibromoethane | C2H4Br2 |
106-93-4 |
0.01 |
µg |
* The analytes and detection limits listed for each method represent the typical detection limits and analytes reported for that particular method. Keep in mind that analyte lists may vary from laboratory to laboratory. Detection limits may also vary from lab to lab and are dependent upon the sample size, matrix, and any interferences that may be present in the sample.