Dr Margit Geissler | Authors

Articles

Quantitative Analysis of the Composition of Tea Tree Oil

The analysis of tea tree oil requires a severe quality control due to its potential to induce and elicit skin allergies. Tea tree oil is an essential oil and consists of a large number of constituents. Heart-cut Multidimensional GC–MS is very well suited to analysis of samples of such high complexity.

BTEX Determination in Gasoline Containing Ethanol by Single Oven MDGC

The determination of BTEX in gasoline is usually performed in accordance with the standard test method ASTM D3606 using gas chromatography. However, particularly in the presence of ethanol, co-elutions are observed in one-dimensional chromatography. In this application note a method is described applying multidimensional GC to overcome the separation problem.

Tracking Flavours in White Wine and Coffee Flavour Profiling of Food Samples with SPME-GC–MS and On-column Injection

SPME-GC–MS with on-column injection can be successfully employed for flavour profiling of food samples. The on-column injector of the GC-2010 can be used for SPME without any modifications, only an external ring adapter was used to facilitate the injection. The data can be compared with sensorial data of food.