Use of a nebulizer to add gas to eliminate metal deposition...

Details Use of a nebulizer to add gas to eliminate metal deposition... Use of a nebulizer to add gas to eliminate metal deposition...

2006-01-31

2006-01-31

Lee, John H. (Department: 2881)

Radiant energy

Ionic separation or analysis

Methods

C250S281000, C250S288000, C436S181000, C359S333000

Reexamination Certificate

active

06992282

ABSTRACT:
Use of a nebulizer add-gas to reduce metal deposition on the sampling orifices of an inductively coupled plasma mass spectrometer (“ICP-MS”) is disclosed. Specifically, dilute mixtures of Sulfur Hexafluoride (SF6) in an inert gas have been used to reduce transition metal deposition on the sampling orifices of an ICP-MS, thereby greatly enhancing the stability of the ICP-MS sensitivity over time without corroding the internal parts and/or chemically attacking the cones of the ICP-MS.

REFERENCES:
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patent: 4551624 (1985-11-01), Spangler et al.
patent: 5873523 (1999-02-01), Gomez et al.
patent: 6107626 (2000-08-01), Wang et al.
patent: 6544484 (2003-04-01), Kaufman et al.
patent: 2001/0013579 (2001-08-01), Andrien et al.

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