Manifold and method of batch measurement of Hg-196 concentration using a mass spectrometer

Patent · Tue Nov 26 00:00:00 EST 1991

OSTI ID:7276026

Grossman, M W; Evans, R

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. 8 figures.

• DOE Contract Number: AC03-76SF00098
• Assignee: GTE Products Corporation, Danvers, MA (United States)
• Patent Number(s): US 5068533; A
• Application Number: PPN: US 7-323737
• OSTI ID: 7276026
• Resource Relation: Patent File Date: 15 Mar 1989
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
MASS SPECTROMETERS
SAMPLE HOLDERS
MERCURY
MASS SPECTROSCOPY
MERCURY 196
QUANTITATIVE CHEMICAL ANALYSIS
DESIGN
OPERATION
CHEMICAL ANALYSIS
ELEMENTS
EVEN-EVEN NUCLEI
HEAVY NUCLEI
ISOTOPES
MEASURING INSTRUMENTS
MERCURY ISOTOPES
METALS
NUCLEI
SPECTROMETERS
SPECTROSCOPY
STABLE ISOTOPES
400102* - Chemical & Spectral Procedures