𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A sampling system using sample vials for high-temperature isothermal capillary gas chromatography

✍ Scribed by Evrard, E. ;Mercier, M. ;Bal, M.

Publisher
John Wiley and Sons
Year
1979
Tongue
English
Weight
402 KB
Volume
2
Category
Article
ISSN
0935-6304

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A novel sampling system for isothermal capillary gas chromatography of medium‐ or low‐volatility mixtures is described and test results are reported using flame ionization detection. The system features a loading and positioning chamber for glass vials which can carry a dilute sample in up to 0.2 ml of a volatile solvent. The output from the glass vaporization chamber is trapped onto a packed precolumn operated in the backflush mode. The analytes are further transferred over a wall‐coated capillary trap prior to isothermal capillary GLC. Repeat‐cycle operation of the sampling system requires 10 channels of a processor for time control over 5 solenoid valves and 3 static heaters. Preliminary results with long‐chain n‐alkanes in the submicrogram range showed no unwanted effects. The principal claim of the system is an improved rejection of non‐volatiles.

📜 SIMILAR VOLUMES

Very large volume sample introduction in
Very large volume sample introduction in capillary gas chromatography using a programmed temperature injector for pesticide analysis
✍ Jesús Villén; F. Javier Señoráns; Marta Herraiz 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 203 KB 👁 2 views

This article describes a method to determine standard pesticides in a model solution based on very large volume injection in capillary gas chromatogra-Ž . phy using a temperature-programmable injector PTV . The influences of sample volume, speed of sample introduction, flow rate during sampling, and

A universal sample injection system for
A universal sample injection system for capillary column GC using a programmed temperature vaporizer (PTV)
✍ Poy, F. ;Visani, S. ;Terrosi, F. 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 386 KB 👁 1 views

## Abstract This article describes the use of a programmed temperature vaporizer injection system which overcomes many of the classical problems associated with other injection techniques employed in capillary GC. The system can be operated in three distinct modes.

Special cooling system for the on-column
Special cooling system for the on-column injector in capillary gas chromatography eliminating discrimination of sample compounds
✍ Galli, M. ;Trestianu, S. ;Grob, K. 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 346 KB 👁 1 views

## Abstract On‐column injection into a hot gas chromatograph oven involves the danger that the bottom part of the needle is warmed up above the boiling point of the solvent in the sample. Consequently parts of the sample are evaporated out of the needle instead of being introduced as a liquid into

Use of laboratory robotics for gel perme
Use of laboratory robotics for gel permeation chromatography sample preparation: Automation of high-temperature polymer dissolution
✍ Drew S. Poché; Raymond J. Brown; Paul L. Morabito; R. Tamilarasan; Daniel J. Duk 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 248 KB 👁 2 views

Manual preparation of polymer samples for molecular weight characterization by solution methods such as gel permeation chromatography (GPC) is a timeconsuming, labor-intensive, and redundant task. Preparation of samples for high-temperature GPC characterization further complicates the procedure. A t