Optical Fiber Detector Developed by Scientists using GC Separation
An optical fiber detector has been developed by Portuguese scientists for the measurement of simple alcohols in industrial atmospheres following GC separation.
An optical fiber detector has been developed by Portuguese scientists for the measurement of simple alcohols in industrial atmospheres following GC separation. The scientists have developed a polymer-coated optical fiber as a detector for a gas chromatograph for the specific detection of volatile alcohols that are encountered in industry. It is based on the variation in optical signal from the fiber as the alcohols are adsorbed. Over-exposure to low-molecular-mass alcohols such as the isomeric butanols and pentanols causes irritation to the eyes and throat, nausea, dizziness and even central nervous system depression, so it is important that their airborne concentrations are kept to a minimum. Although there appear to be no performance advantages of the optical fiber detector over the FID, the researchers pointed out that the optical fibre detector is far less expensive and easy to operate.
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>.
