GC-MS analysis apparatus
AssigneeAgilent Technologies, Inc.
InventorRaffaele Correale
Life of this patent
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Abstract
GC-MS analysis apparatus has an interface section between GC and MS sections, which is located with respect to the direction of an analyte flow downstream of the GC section and upstream of the MS section. The interface section comprises at least one membrane with at least one orifice capable of establishing a molecular flow condition in the analyte passing between the GC and MS sections through the membrane. The membrane is subjected to a pressure differential such that the pressure pa in a region located upstream of the membrane is higher than the pressure pb in a region located downstream of the membrane.
Claims15
A GC-MS analysis apparatus comprising:
- a gas chromatographic (GC) section and a spectrometric analysis (MS) section;
- and
- an interface section associated with the GC and the MS and located with respect to a flow of analyte downstream of the GC section and upstream of the MS section,
- said interface section comprising at least one membrane with at least one orifice capable of establishing a molecular flow condition in the analyte flowing from said GC section through said membrane to said MS section while said membrane is subjected to a pressure differential when pressure pa in an upstream region of the membrane is higher than pressure pb in a downstream region of the membrane.
Dependencies are inferred from the claim text.