Marchwood Scientific Services

Marchwood Scientific Services

Ambient and Indoor Monitoring


In recent years there has been increased concern over the quality of the air we breathe in the outdoor environment and the workplace. This has resulted in a number of new regulations and tighter limits being imposed worldwide.Mss provides a comprehensive analysis service for the measurement of toxic chemicals in ambient and workplace atmospheres and specializes in dioxins and furans, pcbs, pahs and vocs.In order to take representative samples for stack emissions there are a number of factors that need to be taken into account. These include elevated temperatures, and variation in flow rate, moisture content and pressure. For outdoor and indoor air sampling these variations are not encountered with  ambient temperature and static conditions normally prevailing.

For ambient air sampling of trace organics, methods normally utilize a high volume air sampler incorporating a filter constructed of puf or equivalent. Mssl can provide the sampling media as part of the service for dioxins and furans, pcbs or pahs with laboratory analysis utilizing solvent extraction, chromatographic clean-up and hrgcms.
Voc analysis is undertaken either by solvent desorption of absorbent tubes followed by gcms or direct injection of an aliquot of sample from a tedlar gas bag followed by gcms. 

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