HS / GCMS - Headspace chromatography

Head Space : Perkin Elmer TurboMatrix 16
Temperature range : 35 to 210 ° C
Detector 1 = Mass spectrometer : Perkin Elmer Clarus 600T - Electronic impact quadrupole (EI).
Column : Elite-5MS (capillary, methyl-silicone grafted 5% PH ME siloxane), 60 mx 0.18 mm x 0.18 µm
Detector 2 = FID : Autoignite with electronic PPC regulation.
Injector : Automatic sample changer

Application domain

Identification and determination of ultra volatile organic compounds (Mw <350 g / mol).

Liquid or solid samples.

Large amount of sample analyzed (several grams)

Trace analysis

Analysis of majority constituents

Principle

The sample is placed in a gas-tight vial (22 mL) and hermetically sealed using a suitable septum. The vial is placed in an oven at a temperature of 35 to 210 ° C in order to generate a headspace (balance between the liquid / solid phase and the vapor phase). After the equilibrium phase, the injection needle will pressurize the interior of the vial using the carrier gas (He) for a few minutes and allow injection into the chromatographic column under the effect of expansion. (pressure balance sampling).

During the injection into the GC, all of the volatilized organic molecules will be separated by the chromatographic column and then identified by the MS detector (mass spectrometry). The area of the chromatographic peaks of each compound is proportional to their content in the sample.