GC Measurement of Nitrous Oxide in Exhaled Air
In a note recently published in Clincal Chemistry, researchers describe a method for detection of N2O in exhaled air by using gas chromatography (GC).
In a note recently published in Clincal Chemistry, researchers describe a method for detection of N2O in exhaled air by using gas chromatography (GC). According to the note, nitrous oxide is a relatively stable compound, present at ~310 nL/L in the atmosphere and is produced predominantly by microbial reduction of nitrate. This process, called denitrification, is the conversion of nitrate to gaseous nitrogen compounds, resulting in a product of nitrogen or nitrous oxide under most conditions.
To view, please visit: http://www.clinchem.org/cgi/content/extract/43/10/1993
RAFA 2024 Highlights: Contemporary Food Contamination Analysis Using Chromatography
November 18th 2024A series of lectures focusing on emerging analytical techniques used to analyse food contamination took place on Wednesday 6 November 2024 at RAFA 2024 in Prague, Czech Republic. The session included new approaches for analysing per- and polyfluoroalkyl substances (PFAS), polychlorinated alkanes (PCAS), Mineral Oil Hydrocarbons (MOH), and short- and medium-chain chlorinated paraffins (SCCPs and MCCPs).
Pharmaceutical excipients, such as polyethylene glycol-based polymers, must be tested for the presence of ethylene oxide (EtO) and 1,4-dioxane as part of a safety assessment, according to USP Chapter <228>.
