Gas chromatography is used for the quantitative and qualitative analysis of volatile and semivolatile organics, as well as organic and inorganic gasses. GC/MS is unique in that it offers both identification and quantification of analytes. GC/FID generally offers more sensitivity than the other gas chromatography techniques, but is limited to quantitative analysis. GC/TCD allows us to quantify gasses that are not compatible with GC/FID, such as carbon dioxide, nitrogen, oxygen, etc.
GC/MS
Identification of trace level volatiles and semi volatiles. Examples would include polycyclic aromatics, PCBs, pesticides, derivatized herbicides, etc.
Results are both qualitative and quantitative.
GC/FID
Gasoline range, diesel range, and residual range organics.
GC/TCD
Nitrogen, oxygen, and carbon dioxide in gas samples. Carbon dioxide fraction of natural gas.
GC/FID and GC/TCD
| Internal/UA clients | External clients | |
| Analysis for one compound | $50 | $75 |
| Additional compounds (each) | $5 | $7.50 |
| Set-up* | $100 | $150 |
| Dilution and reanalysis* | $20 | $30 |
GC/MS
| Internal/UA clients | External clients | |
| Analysis for one compound | $100 | $150 |
| Additional compounds (each) | $10 | $15 |
| Set-up* | $200 | $300 |
| Dilution and reanalysis* | $40 | $60 |
The costs shown above are estimates, and will be discussed and agreed upon prior to sample analysis.
*A flat rate will be charged for this and is independent of the number of ions requested.
Setup cost reflects the cost of calibration, duplicates, augmented samples, and QC checks.
When sample results exceed the instrument calibration range, a dilution and reanalysis will be required.
For further inquiries, or to request an estimate, please email Shane Billings at UAF-INE-MAC@alaska.edu.
