Evaluation of inductively coupled plasma emission spectrometry as an element-specific detector for supercritical fluid chromatography

Journal Article · Sat Sep 15 04:00:00 EDT 1990 · Analytical Chemistry (Washington); (United States)

DOI:https://doi.org/10.1021/ac00217a025· OSTI ID:5408471

Forbes, K A; Vecchiarelli, J F; Uden, P C; Barnes, R M ^[1]

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1. Univ. of Massachusetts, Amherst (USA)

A capillary supercritical fluid chromatograph (SFC) was interfaced to an inductively coupled plasma (ICP) atomic emission spectrometer (AES). The chromatographic system, interface, and plasma torch design are described. The argon plasma was optimized for Si I 251.6 nm emission to detect separated organosilicon compounds selectivity. The linear dynamic range for octamethylcyclotetrasiloxane was between 7.24 and 145.0 ng of Si injected, with a detection limit of 5.8 ng of Si injected (57.9 ppm Si). The precision of the measured peak heights of three replicate injections of 75 ng of Si was less than 5%. The effects of the mobile phase (CO{sub 2}) pressure on the plasma stability and sensitivity are presented.

• OSTI ID: 5408471
• Journal Information: Analytical Chemistry (Washington); (United States), Journal Name: Analytical Chemistry (Washington); (United States) Vol. 62:18; ISSN 0003-2700; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
ARGON
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHROMATOGRAPHY
ELEMENTS
EMISSION SPECTROSCOPY
FLUIDS
GASES
MEASURING INSTRUMENTS
MEASURING METHODS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RARE GASES
SEPARATION PROCESSES
SPECTRAL RESPONSE
SPECTROSCOPY
SUPERCRITICAL FLUID CHROMATOGRAPHY