This method is for the determination of 1,3-butadiene in workplace air. The sample is collected on two coconut charcoal sorbent tubes in tandem. A 400 mg tube is in the front and a 200 mg tube is in the back. After collection the tubes are desorbed in methylene chloride, and analyzed using GC/FID (flame ionization detector). The working range of the method is 0.02 to 100 ppm (0.04 to 220 mg/m³) for a 25 L air sample.
Separate the front half and back half tubes for shipment to the lab.
Note: This method revises Method S91.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | At least two months from sampling to analysis if asmples are stored in a freezer below -4°C. |
| Preservatives: | Store samples below -4°C. |
| Required Preps: | 400 mg and coconut charcoal tubes (SKC 226-37) |
| Collection Method: | The method recommends a 0.01 - 0.5 L/min. flow rate with a 5 - 25 L sample collection volume. |
| Analytical Methodology: | GC/FID |
| Documentation: | 
1024
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| 1,3-Butadiene | C4H6 |
106-99-0 |
0.2 |
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.