Sequential slew scanning monochromator as a plasma emission chromatographic detector for determination of volatile hydrides

Abstract

A sequential determination of chromatographlcally separated hydrides has been developed to demonstrate the use of a sequential slew scanning monochromator as a plasma emission chromatographic detector. Hydrides of Ge, As, and Sb are generated, separated on a column of Chromosorb 102, and Introduced Into an Inductively coupled plasma. The sequential slew scanning monochromator monitors each resolved chromatographic peak at a different atomic emission wavelength. The detection limits are 0.004 pg (0.20 ppb) for Ge and 0.05 pg (2.5 ppb) for As and Sb. Relative standard deviations at the 1 pg (50 ppb) level range from 2 to 5%.

The use of a hollow cathode glow discharge (HCGD) as an atomic emission spectrometric element specific detector for chlorine and bromine in gas chromatography

“…For elemental determinations in gaseous samples with atomic emission spectrometry, various plasma sources have been proposed. Apart from the ICP 1 and the DCP, the MIP 2 has been used to a wide extent. However, glow discharges have also been used for gas analyses.…”

Element-selective detection after supercritical fluid chromatography using a radio frequency plasma detector

“…Box 1380, Houston, TX 77251. 0003-2700/89/0361-1815$01.50/0 coupled plasmas (10)(11)(12)(13)(14)(15). Rice et al have worked extensively with afterglow detectors (16), and they have recently reported some encouraging results from a helium afterglow detector based on a primary discharge generated by a radio frequency (rf) power source (17).…”

“…0003-2700/89/0361-1821 $01.50/0 (8,9) or base (6) digestion of the catalyst matrix have also been proposed. Techniques previously applied to the characterization of coked catalyst samples have included elemental analysis (10), electron microscopy and X-ray diffraction (11), and IR spectroscopy (12,13). There have also been several previous studies that have reported 13C CP/MAS spectra of carbonaceous residues on zeolites.…”

Ultra-sensitive, simultaneous determination of arsenic, selenium, tin, and antimony in aqueous solution by hydride generation gas chromatography with photoionization detection

“…This is especially true of the multichannel plasma emission spectrometer, which used a Chromosorb 102 column primarily to resolve a major interfering background peak from the analyte hydrides. The analyte hydride peaks actually overlapped one another, and the remaining elemental specificity was derived mostly from the optical resolution of the multichannel spectrometer (12,24).…”