High-performance Analysis of Polycyclic Aromatic Hydrocarbons (PAHs) by TD–GC–MS: Method Validation and Case Study

Markes-polycyclic-aromatic-hydrocarbons-by-TD-GC-MS

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This study investigates the performance of Markes’ thermal desorption (TD) systems for the analysis of polycyclic aromatic hydrocarbons (PAHs) in air. The application note describes how sample recollection can be used to conveniently check and validate recovery of high-boiling analytes through Markes’ TD system, therefore enhancing confidence in this fully automated and high-sensitivity alternative to conventional solvent-extraction methods. Other key results were area RSDs <4.3% (well within the 30% limit specified in US EPA Method TO-13A), and carryover values below 1.5%. Results from an independent investigation of urban air in Belgium are also summarized, which showed excellent linearities (R2 >0.998), and limits of detection <0.54 ng/m3.

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