Sample introduction device for mass spectrometers

Details Sample introduction device for mass spectrometers Sample introduction device for mass spectrometers

1983-11-09

1985-12-31

Smith, Alfred E.

Radiant energy

Ionic separation or analysis

With sample supply means

250423R, 250423F, H01J 4904

Patent

active

045623511

ABSTRACT:
The invention consists of a mass spectrometer having a sample insertion probe on which a reference compound and an unknown sample can be simultaneously introduced without mixing into a field ionization or ion or neutral particle bombardment ion source. An insulated support is mounted by a parallel hinge on the end of the probe shaft. Two or more separated segments or emitter wires, one carrying the unknown sample, another carrying an appropriate reference compound, are mounted on a base member which is fitted to the support. A drive shaft, concentric with the outer probe shaft, has an eccentric peg on the end, which engages with a cam on the support, so that rotation of the drive shaft results in an oscillating motion of the segments or emitters, alternately positioning them in the optimum position for ionization. A spectrum of the sample or the reference compound can be obtained when required by selecting the appropriate position of the drive shaft. Rotation of the drive shaft may be controlled by a servo- mechanism and a computer. As a result, improved accuracy of mass measurement of peaks in the mass spectrum of the sample is achieved.

REFERENCES:
Occolowitz, J. L.; Landis, P. W., 30th An. Confr. on Mass Spectrom. and Allied Topics, Honolulu, Jun. 1982, pp. 562-563.
Alberth, W.; Straub, K. M.; Burlingame, A. L., Analytical Chemistry, 1982, 54, 2029-2034 (Oct.).
Abstract from Instruction Manual for VG ZAB Mass Spectrometer, produced by VG Analytical Limited.
Svec et al., "A Mass Spectrometer . . . ", J. Sci. Instrum., vol. 43, No. 3, Mar. 1966, pp. 134-137.

Affiliated with

Also associated with

Rating

Sample introduction device for mass spectrometers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sample introduction device for mass spectrometers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sample introduction device for mass spectrometers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1026120