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
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