منابع مشابه
FrAnK: A Web Application for the Annotation of Mass Spectral Peaks Using Fragmentation Spectra
In the field of Metabolomics, biological samples are routinely analysed using Mass Spectroscopy (MS) techniques with the aim of quantifying and identifying the constituent metabolites. The University of Glasgow Metabolomics Facility has developed a proprietary web-based application (PiMP) for the analysis of mass spectral data generated by the research staff using this technique. However, PiMP ...
متن کاملStatistical precision of the intensities retrieved from constrained fitting of overlapping peaks in high-resolution mass spectra
Least-squares fitting of overlapping peaks is often needed to separately quantify ions in high-resolution mass spectrometer data. A statistical simulation approach is used to assess the statistical precision of the retrieved peak intensities. The sensitivity of the fitted peak intensities to statistical noise due to ion counting is probed for synthetic data systems consisting of two overlapping...
متن کاملCluster analysis of the organic peaks in bulk mass spectra obtained during the 2002 New England Air Quality Study with an Aerodyne aerosol mass spectrometer
We applied hierarchical cluster analysis to an Aerodyne aerosol mass spectrometer (AMS) bulk mass spectral dataset collected aboard the NOAA research vessel Ronald H. Brown during the 2002 New England Air Quality Study off the east coast of the United States. Emphasizing the organic peaks, the cluster analysis yielded a series 5 of categories that are distinguishable with respect to their mass ...
متن کاملPOSITIVE AND NEGATIVE ION MASS SPECTRA OF RING - SUBSTITUTED NITROBENZENES
The 70 ev positive and negative ion mass spectra of ring-substituted nitrobenzenes were studied. The influence of the substituent group on the fragmentation modes of the molecular ions is discussed. The effect of pressure in the formation of negative ions was also studied. As expected, the ratio of fragment ions to negative molecular ions decreased with increasing pressure in ion source.
متن کاملThe Invariant Mass Spectra Profile
Two possible reasons for the narrow peak observation in the invariant mass spectrum of the pK 0 s close to 1.54 GeV/c 2 are discussed.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Mass Spectrometry Society of Japan
سال: 1961
ISSN: 1884-3271,1340-8097
DOI: 10.5702/massspec1953.9.171