When studies of volatile organic compounds take several years to complete, how do analysts ensure the same precision and accuracy in the data for each sample for the duration of a project? Dr Rebecca Cordell from Leicester University in the UK relies on Markes International’s TD100-xr multi-tube thermal desorber, which delivers fast and consistent results time and time again thanks to its automated internal standard addition feature. It also saves further sampling time with its automated dry-purge feature.
Improved accuracy and precision in air quality study
Dr Cordell is studying air quality in hospitals to determine whether healthcare workers are exposed to poor-quality air. For three years, her team has been collecting air samples onto sorbent tubes to analyse their volatile organic compound (VOC) content. So far, the team has collected over 600 samples from two hospitals and analysed each one by thermal desorption–two- dimensional gas chromatography with a flame ionisation detector or mass spectrometer (TD–GC×GC–FID/MS).
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