2] classes identified from the positive-ion ESI FT-ICR mass spectra
of four shale oil samples at a heating rate varied from 5 to 20 [degrees]C [min.
Analysis in SCAN mode of the most contaminated samples allowed the confirmation of AZA1 and AZA2 by mass spectra
ESI mass spectra
were collected in the Masuda laboratory, Nagoya Institute of Technology, Japan.
Lycopodium alkaloids XV Structure and mass spectra
of some minor alkaloids of L flabelliforme.
Once mass spectra
have been produced, using either MALDI or ESI, several different aspects of the chemical structure can be determined.
Since the mass spectra
of 9-hydroxyphenanthrene derivatized with various reagents are not available in the mass spectral library of the National Institute of Standards and Technology, they are shown in Fig.
The final step in obtaining quantitative results from mass spectra
is data analysis that is robust and self-consistent.
A summary of the mass spectra
of the NA obtained by EI in this work is given in Table 1 in the Appendix and shown in Figs.
Identification is greatly assisted by the fact that mass spectra
collections of approximately 130,000 compounds are readily available.
Later, using a library of reference mass spectra
, Espinoza matched the unknown fingerprint to that of a common drug pentobarbital.
By integrating experimental data from instrument manufacturers such as Genomic Solutions with mass spectra
from diverse sources analyzed and archived with our intelligence platforms, we can deliver a greater volume of valuable proteomic and genomic knowledge, more rapidly.
Table 4 - attribution of peaks in mass spectra
m/z Product value Water 18 DMA 45 TBA 72 [CS.