Vacuum Ultraviolet Absorption Spectroscopy System And Method

摘要

An efficient absorption spectroscopy system is provided. The spectroscopy system may be configured to measure solid, liquid or gaseous samples. Vacuum ultra-violet wavelengths may be utilized. Some of the disclosed techniques can be used for detecting the presence of trace concentrations of gaseous species. A preferable gas flow cell is disclosed. Some of the disclosed techniques may be used with a gas chromatography system so as to detect and identify species eluted from the column. Some of the disclosed techniques may be used in conjunction with an electrospray interface and a liquid chromatography system so as to detect and identify gas phase ions of macromolecules produced from solution. Some of the disclosed techniques may be used to characterize chemical reactions. Some of the disclosed techniques may be used in conjunction with an ultra short-path length sample cell to measure liquids.

主权项

1. A gas analysis system, comprising:
a gas reaction flow cell, the gas reaction flow cell being configured to allow for a chemical reaction between at least two gas species; at least one gas inlet port of the gas reaction flow cell configured to provide the at least two gas species into the gas reaction flow cell, at least two of the at least two gas species being reactive with each other; at least one gas outlet port of the gas reaction flow cell; a detection space within the gas reaction flow cell; a light source coupled to the gas reaction flow cell, the light source configured to provide at least VUV or less wavelengths of light; a spectrometer coupled to the gas reaction flow cell, the spectrometer capable of measuring multiple wavelengths of light simultaneously; and a light path from the light source to the spectrometer, the light path being contained within one or more controlled environments, the gas reaction flow cell configured to pass light from the light source through the detection space to the spectromenter to detect a property of the chemical reaction.