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Fig. 6 | Environmental Sciences Europe

Fig. 6

From: A European proposal for quality control and quality assurance of tandem mass spectral libraries

Fig. 6

Overview on the average match probability (amp) distribution obtained from library matching of the spectral collections acquired during the interlaboratory study on the following instrument configurations: (1) Q-Orbitrap-LIT, (2, 3) Q-Orbitrap, (4) LIT-Orbitrap, (5a) LIT-Orbitrap with HCD, (5b) LIT-Orbitrap with CID, and (6, 7) QqTOF. The numbering (1–7) decodes the laboraties. Fragmentation on the Orbitraps 1–4 was accomplished with HCD. The collision energies are given in eV for the QqTOFs and NCE for the Orbitraps. The WRTMD served as reference library. Even for instruments with identical configurations a considerable inter-instrument variability in the optimal collsion energy range necessary for obtaining library matches with high amp-values was observed

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