This method is used in the determination of turpenes by GC/FID, and may be applicable to other monocyclic and dicyclic terpenes that exhibit acceptable stability on charcoal tubes and in carbon disulfide (desorption solvent). The working range is 0.02 to 36 ppm (0.13 to 200 mg/m³) for a 15 L sample. Other terpenes or compounds with similar retention times may cause interferences. There is also the possibility of interferences from the decompositional rearrangement of some terpenes from prolonged storage on charcoal or in carbon disulfide. NOTE: This is a new method for the determination of four terpenes.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | 30 days from sampling to analysis if kept at 5°C |
| Preservatives: | Store at 5°C. |
| Required Preps: | Solid sorbent tube: coconut shell charcoal, 100 mg/50 mg, 7cm x 6mm OD x 4mm ID |
| Collection Method: | Solid sorbent tube: 2 - 30 L @ 0.01 - 0.2 L/min. |
| Analytical Methodology: | GC/FID |
| Documentation: | 
1552
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| beta-Pinene | C10H16 |
127-91-3 |
0.6 |
µg |
| 3-Carene | C10H16 |
13466-78-9 |
0.6 |
µg |
| Limonene | C10H16 |
138-86-3 |
0.6 |
µg |
| alpha-Pinene | C10H16 |
80-56-8 |
0.6 |
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.