Moving wheel liquid chromatography-helium microwave-induced plasma interface

Journal Article · Sat Apr 15 04:00:00 EDT 1989 · Analytical Chemistry; (USA)

DOI:https://doi.org/10.1021/ac00183a022· OSTI ID:5209203

Zhang, Liming; Carnahan, J W ^[1]; Winans, R E; Neill, P H ^[2]

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1. Northern Illinois Univ., DeKalb (USA)
2. Argonne National Lab., IL (USA)

An interface between a liquid chromatograph and an atmospheric pressure helium microwave-induced plasma for halogen-selective detection is presented. Halides and oxohalogens are separated by anion-exchange high-performance liquid chromatography and directed, as a mist, to a continuously moving wheel interface. The aqueous solvent is evaporated with a flow of hot nitrogen, leaving the analyte in residue form. The moving wheel then carries the dry analyte into the plasma where it is volatilized, atomized, and excited. The plasma is a small-volume helium microwave-induced plasma operated at 100 W with a helium support gas flow of 3.1 L/min. Selectivity is observed when the elemental signals of coeluting peaks are monitored. Detection limits are in the range of 0.4-20 {mu}g of halogen. When this system is used without the chromatographic column for bulk solution analysis, halogen detection limits range from 02. to 20 {mu}g/mL.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5209203
• Journal Information: Analytical Chemistry; (USA), Journal Name: Analytical Chemistry; (USA) Vol. 61:8; ISSN ANCHA; ISSN 0003-2700
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
400105* -- Separation Procedures
ANIONS
ATOMIZATION
CALIBRATION
CHARGED PARTICLES
CHEMICAL ANALYSIS
CHROMATOGRAPHY
DATA
DESIGN
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION SPECTROSCOPY
EQUIPMENT INTERFACES
EVAPORATION
EXPERIMENTAL DATA
FLUID MECHANICS
FLUIDS
GASES
HALIDES
HALOGEN COMPOUNDS
HELIUM
INFORMATION
ION EXCHANGE
IONS
LIQUID COLUMN CHROMATOGRAPHY
MECHANICS
MICROWAVE RADIATION
NONMETALS
NUMERICAL DATA
PERFORMANCE
PHASE TRANSFORMATIONS
PLASMA
PNEUMATICS
QUANTITATIVE CHEMICAL ANALYSIS
RADIATIONS
RARE GASES
SEPARATION PROCESSES
SPECTROSCOPY
TRACE AMOUNTS
WHEELS