Accession Number:

ADA183650

Title:

Fourier Transform Ion Cyclotron Resonance Mass Spectrometry at Low Magnetic Fields: Several Figures of Merit.

Descriptive Note:

Technical rept. Jan 85-Sep 86,

Corporate Author:

FLORIDA UNIV GAINESVILLE DEPT OF CHEMISTRY

Personal Author(s):

• Hearn,Bryan A.
• Baykut,Gokhan
• Eyler,John R.

Report Date:

1987-07-29

Pagination or Media Count:

20.0

Abstract:

A Fourier transform ion cyclotron resonance mass spectrometer based on a permanent magnet with a magnetic induction of 0.16 T with low homogeneity provided a precision of 3.2 taken as the relative standard deviation of the hourly mean of three independent measurements over a 5 hour period and a precision of 1 1.7 for daily measurements over a 10 day period. For the permanent magnet system, resolution values for perdeuterated benzene m z 84 for a given mass range and a given number of data points were similar to those measured for both an electromagnet 0.2 to 1.0 T and a superconducting solenoid 3.0 T. Signal to noise ratios for perdeuterated benzene obtained with the three different magnets were also measured. Keywords Fourier Transform Ion Cyclotron Resonance Mass Spectrometry Instrumentation Miniaturization.

Descriptors:

• *MASS SPECTROMETRY
• *MASS SPECTROMETERS
• BENZENE
• FIGURE OF MERIT
• MINIATURIZATION
• PERMANENT MAGNETS
• STANDARD DEVIATION
• SIGNAL TO NOISE RATIO
• MEASUREMENT
• HOMOGENEITY
• MAGNETS
• DATA BASES
• RESOLUTION
• SOLENOIDS
• SUPERCONDUCTORS
• FOURIER TRANSFORMATION
• CYCLOTRON RESONANCE
• DEUTERIUM COMPOUNDS
• STABILITY

Subject Categories:

• Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE