Articles and Applications
Showing items tagged: gc
Many laboratories are now prohibited from placing Hydrogen cylinders on their premises owing to health and safety restrictions. A Peak Scientific Precision Hydrogen Trace generator is a safe alternative to gas cylinders whilst providing pure carrier gas (99.9999% purity, moisture free), in quantities great enough to supply a number of GCs simultaneously.
Abstract The following technical brief aims to demonstrate the performance of GC-MS using hydrogen as a carrier gas. Here we compare the performance of hydrogen and helium for the analysis of a complex mixture. The results show that by using hydrogen, chromatographers can achieve superior results to helium, with faster run times and taller, sharper peaks.
Detailed hydrocarbon analysis (DHA) is a separation technique used by a variety of laboratories involved in the petrochemical industry for analysis and identification of individual components as well as for bulk hydrocarbon characterisation of a particular sample. Bulk analysis looks at gasoline composition in terms of PONA components (Paraffins, Olefins, Naphthalenes and Aromatics) and other fuels in the C1-C13 range since this gives an indication of overall quality of the sample.
As the cost and scarcity of helium rises, laboratories have begun to convert methods to hydrogen carrier gas.
The Flame Ionisation Detector (FID) detector is the most commonly used detector in Gas Chromatography with around 90% of GCs equipped with at least one. The FID can be used in almost any organic analysis, and is sensitive down to the parts-per-billion (PPB) range, which is the reason for its widespread use in GC analysis in areas from oil and gas, to food and pharmaceuticals.