Quantitative Determination of Semi-volatile Polychlorinated Biphenyls (PCBs) using TD–GC–MS

Download your copy...

This study describes the performance features that enable Markes’ thermal desorption (TD) systems to be used for the GC–MS analysis of trace-level polychlorinated biphenyls (PCBs) in air. The advantages of TD compared to conventional air monitoring methods for semi-volatiles are discussed, and it is shown how Markes’ innovative sample re-collection functionality facilitates method development by validating quantitative recovery of these challenging analytes all the way through the TD system. Other key results include high sensitivity (with limits of detection ranging from 0.022–0.054 ng, in line with independent studies), excellent linearities (mean R² 0.997), and high analytical precision (all RSDs below 2.5%).

To download your copy of this application note complete the form opposite.