Chemistry: analytical and immunological testing – Inorganic acid or base – Halogen containing
Reexamination Certificate
2005-06-07
2005-06-07
Warden, Jill (Department: 1743)
Chemistry: analytical and immunological testing
Inorganic acid or base
Halogen containing
C436S102000, C436S100000, C436S180000, C436S171000, C422S050000, C422S068100, C422S105000
Reexamination Certificate
active
06902937
ABSTRACT:
This invention relates to methods and apparatus for detecting, quantifying, and/or identifying trace quantities of an anion in the presence of an excess of another anion. One apparatus comprises a sample loop having a first end adapted to be connected to a sample-injection device and a second end adapted to be connected to an inlet of a first separator. An outlet of the first separator has connections to a first waste port and to an inlet of a first anion suppressor. An outlet of the first anion suppressor is connected to a first end of a concentrator and alternatively to waste, the concentrator connected at a second end to a second waste port and alternatively to a pump. The first end of the concentrator is alternatively connected to a second separator inlet, and the second separator is connected at an outlet thereof to an inlet of a second anion suppressor; and an outlet of the second anion suppressor is connected to a mass spectrometer.
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Air Liquide America L.P.
Haynes Elwood L.
Siefke Sam P.
Warden Jill
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