More sensitivity, more speed
FUSION PTR-TOF 10k outperforms common PTR-MS devices with a stunning sensitivity of up to 80 000 cps/ppbv. In food and flavor research such an extreme sensitivity can be crucial when the available time per measurement is strongly limited but still high quality data need to be produced.
In order to provide a simple proof-of-concept for this statement, our science team set up a challenge: "Can a FUSION PTR-TOF 10k unambiguously identify the flavor of a piece of chocolate by measuring its headspace at room temperature for only 1 s ?".
As marker compounds for the different chocolate flavors, we chose:
Grappa (grape based brandy)
- Ethanol: C2H6O, alcohol.
- Ethyl octanoate: C10H20O2, found in wine.
- Ethyl decanoate: C12H24O2, found in grapes.
- Acetic acid: C2H4O2, sour taste.
- Methyl butyrate: C5H10O2, berry aroma.
- Maltol: C6H6O3, caramel aroma.
The results were even clearer than we expected. With ion count-rates in the 104 range and above after only 1 s of integration time, the relative errors are already below 1%. And yes, there are error bars plotted in the graphs, but hardly visible because the errors are negligible. Thus, for great data quality measurement times in the ms region would be more than sufficient.
FUSION PTR-TOF 10k passed the admittedly slightly tongue-in-cheek challenge with flying colors. However, a serious application of this result could be high-throughput analysis of large amounts of food headspace with an autosampler with excellent data quality.