Method and apparatus for introduction of fluid streams into mass

Details Method and apparatus for introduction of fluid streams into mass Method and apparatus for introduction of fluid streams into mass

1988-02-19

1990-12-18

Noland, Tom

Measuring and testing

Sampler, sample handling, etc.

With heating or cooling

250288, 250429, 55 17, 239 86, 261 782, G01N 134

Patent

active

049777858

ABSTRACT:
Methods and apparatus for introduction of sample from a flowing stream into mass spectrometers or other analyzing apparatus for analytical and process stream analysis of the sample. The apparatus generates an aerosol during the decompression of a gas, liquid or supercritical fluid stream. The aerosol's properties are dependent upon mass flow, pressure, temperature, solubility of sample, and the physical dimensions of the aerosol generating device. Upon aerosol generation, a less volatile sample in the form of condensed particles is separated from the gaseous components by accelerating the aerosol through a nozzle restrictor and utilizing momentum differences between solute particles and carrier gas molecules to obtain high solute enrichments at various particles or gas-phase detectors. The device functions primarily as an interface between a supercritical fluid chromatograph and the mass spectrometer.

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