Characterization of the microwave-induced plasma as a detector for supercritical fluid chromatography. Technical report
Technical Report
·
OSTI ID:6668501
A microwave-induced plasma (MIP) sustained in helium is evaluated as an element-selective detector for capillary supercritical fluid chromatography (SFC). The plasma source, a surface microwave-induced plasma (surfatron), is described. Optimal plasma conditions including viewing position, helium flow rate, and applied microwave power are discussed for sulfur emission in the near-infrared spectral region. In addition, the effects of two common mobile phases (CO/sub 2/ and N/sub 2/O) on plasma stability, sensitivity, and spectral background from 200 nm to 1100 nm are assessed. Although the plasma was evaluated principally for use with SFC, much of the discussion is relevant to its application as a gas-chromatographic detector.
- Research Organization:
- Indiana Univ., Bloomington (USA). Dept. of Chemistry
- OSTI ID:
- 6668501
- Report Number(s):
- AD-A-197709/9/XAB; INDU/DC/GMH/TR-88-30
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
640410 -- Fluid Physics-- General Fluid Dynamics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHROMATOGRAPHY
DETECTION
DOCUMENT TYPES
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION
FLOW RATE
FLUIDS
GAS CHROMATOGRAPHY
GASES
HELIUM
INFRARED RADIATION
NEAR INFRARED RADIATION
NONMETALS
OPTIMIZATION
PLASMA
PROGRESS REPORT
RADIATIONS
RARE GASES
SEPARATION PROCESSES
SPECTROSCOPY
STABILITY
SULFUR
SUPERCRITICAL FLUID CHROMATOGRAPHY
SURFACES
400105* -- Separation Procedures
640410 -- Fluid Physics-- General Fluid Dynamics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHROMATOGRAPHY
DETECTION
DOCUMENT TYPES
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION
FLOW RATE
FLUIDS
GAS CHROMATOGRAPHY
GASES
HELIUM
INFRARED RADIATION
NEAR INFRARED RADIATION
NONMETALS
OPTIMIZATION
PLASMA
PROGRESS REPORT
RADIATIONS
RARE GASES
SEPARATION PROCESSES
SPECTROSCOPY
STABILITY
SULFUR
SUPERCRITICAL FLUID CHROMATOGRAPHY
SURFACES