Downloads provided by UsageCounts
Non-targeted analysis using high-resolution mass spectrometry is becoming a critical tool for identifying small molecules of interest across multiple areas of natural and life sciences. The rapid advancement in high resolution mass spectrometry has allowed the collection and archiving of accurate mass spectra of small molecules from hundreds of thousands of biological and environmental samples. To facilitate rapid identification of small molecules, in recent years publicly available online databases of mass spectrometry reference spectra have been built allowing spectral matching (i.e., library searching). However, the fragmentation pattern, including the fragment masses and relative intensities, of a molecule are influenced by experimental factors such as collision energy, collision gas, dissociation technique, instrument type, and ionization mode. Hence, this all impacts the spectral matching. To assess and potentially overcome this issue, we explored the potential of a fragmentation alignment index (FAI ) for small molecules (i.e., mass < 1000 Dalton) obtained from MassBank EU. Firstly, all spectra of a single chemical were compared to investigate the influence of manufacturer and collision energy. Other factors, such as temperature, could also be of interest, however, only few parameters are recorded in the database. Secondly, we investigated the optimal parameters for each instrument type to use for generation of reference spectra to minimize the impact of the experimental conditions on the quality of the spectra. The generated optimal spectra will enable the generation of global spectral such as MassBank EU, that can be used for the structural elucidation of small moleculs. Finally, we evaluate the possibility of developing a fragmentation model for normalisation of mass spectral data to improve spectral matching.
NTS, Graph theory, NTA, Network analysis, High resolution mass spectrometry, Fragmentation pattern
NTS, Graph theory, NTA, Network analysis, High resolution mass spectrometry, Fragmentation pattern
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 0 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
| views | 1 | |
| downloads | 3 |

Views provided by UsageCounts
Downloads provided by UsageCounts