Open split connection of glass capillary columns to mass spectrometers

On-Line Solid Phase Extraction-Gas Chromatography-Cryotrapping-Infrared Spectrometry for the Trace-Level Determination of Microcontaminants in Aqueous Samples

“…Therefore, a coaxial rather than a perpendicular flow system and an inert all-glass flow path were preferred. However, the coaxial interfaces reported [13,18] were designed for mass spectrometric detection and not to meet the more demanding requirements of cryotrapping IR, i.e. complete removal of solvent and no water background at all.…”

Measurements of atmospheric He/N2 as an indicator of fossil fuel extraction and stratospheric circulation

“…The 4 He/M method depends on stabilization of the gas flow to the ion source between a sample and standard gas to achieve high precision differencing. Novel elements in our setup include continuous flow removal of reactive gases via titanium gettering immediately upstream of the mass spectrometer inlet, and the use of an actively-controlled open split (Henneberg et al, 1975) for balancing pressures upstream of a shared capillary directed towards the mass spectrometer. Gas handling techniques, the inlet system and the continuous-flow getter oven are described in detail below.…”

A versatile all‐glass GC/MS interface for capillary columns

“…The advantages of the so-called open split type connection between column and interface with respect to undisturbed chromatographic conditions are now widely recognized [3,8,13], so that we have adapted this type of connection as well.…”