Thermo Fisher Scientific has developed a new method which it claims effectively eliminates invisible high boiling matrices in the analysis of pesticides in food.
Thermo Fisher Scientific has developed a new method which it claims effectively eliminates invisible high boiling matrices in the analysis of pesticides in food.
According to the company the extraction of pesticides from low-fat food products, such as fruit and vegetables, can result in high concentrations of lipid components as a matrix of high boiling compounds in the extracts.
By incorporating a programmable temperature vaporizing injector with a pre-column and a carrier gas backflush capability, the company claims that its GC–MS analyser is capable of eradicating high boiling matrix.
Experimental results demonstrated that the PTV-GC–MS system can be used for both regular and large volume injections, while enhancing the system’s productivity and efficiency analysing pesticides in food.
The new method is detailed in an application note, “Eliminate Invisible High Boiling Matrix in GC and GC–MS by Using PTV Backflush Injection Technique for Increased Productivity and Reliability,” which is available to download at www.thermoscientific.com/ptv
Obtaining Allicin from Garlic with High-Speed Counter Current Chromatography
February 14th 2025High-speed counter current chromatography (HSCCC), an advanced liquid-liquid chromatography technique employing both a liquid stationary phase and a liquid mobile phase (effectively eliminating irreversible adsorption), was used to harvest allicin from garlic.
The Next Frontier for Mass Spectrometry: Maximizing Ion Utilization
January 20th 2025In this podcast, Daniel DeBord, CTO of MOBILion Systems, describes a new high resolution mass spectrometry approach that promises to increase speed and sensitivity in omics applications. MOBILion recently introduced the PAMAF mode of operation, which stands for parallel accumulation with mobility aligned fragmentation. It substantially increases the fraction of ions used for mass spectrometry analysis by replacing the functionality of the quadrupole with high resolution ion mobility. Listen to learn more about this exciting new development.
Identifying Microplastics in Tap Water with Py-GC/MS
February 12th 2025A pyrolysis gas chromatography-mass spectrometry (Py-GC/MS) methodology has been specifically developed for the identification and quantification of seven polymers commonly found in tap water. The researchers responsible for the approach state that it prioritizes both time and cost efficiency without compromising the thoroughness of marker spectrum detection and confirmation.