Manifold and method of batch measurement of Hg-196 concentration

Details Manifold and method of batch measurement of Hg-196 concentration Manifold and method of batch measurement of Hg-196 concentration

1989-03-15

1991-11-26

Berman, Jack I.

Radiant energy

Ionic separation or analysis

With sample supply means

250281, 250282, 250424, 250425, H01J 4904

Patent

active

050685333

ABSTRACT:
A sample manifold and method of its use has been developed so that milligram quantities of mercury can be analyzed mass spectroscopically to determine the .sup.196 Hg concentration to less than 0.02 atomic percent. Using natural mercury as a standard, accuracy of .+-.0.002 atomic percent can be obtained. The mass spectrometer preferably used is a commercially available GC/MS manufactured by Hewlett Packard. A novel sample manifold is contained within an oven allowing flow rate control of Hg into the MS. Another part of the manifold connects to an auxiliary pumping system which facilitates rapid clean up of residual Hg in the manifold. Sample cycle time is about 1 hour.

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