Stack Emissions


Dioxin and Furans


MSSL provides a specialist analysis service for air emissions samples for customers/contractors engaged in stack emission testing. Stack emissions testing is required in the UK for those industrial sites regulated under the Integrated Pollution Prevention and Control (IPPC) Directive. Sites that are covered by the regulations include Energy from Waste Plants/Incinerators, Cement Kilns and Smelting Plants.

This service is provided to clients all over the world and an important feature of the MSSL service is the fast turnaround that can be offered for the analysis. MSSL has 4 modern instruments to undertake the analysis each of which can analyse at least 20 samples per day.



Dioxin

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Clients undertake sampling for Polychlorinated Dibenzodioxins and Dibenzofurans (Dioxins and Furans) in accordance with BSEN 1948/USEPA 23 using an isokinetic sampling train.

Prior to sampling, MSSL will ship the following components of the train - A resin trap filled with XAD-2 which has been pre-cleaned and spiked with the required C-13 standards; a filter and an empty container for washings. At the end of the sampling all components are placed in the box and returned to MSSL for analysis.





In the Millbrook laboratory analysis is performed to using solvent extraction followed by chromatographic clean-up and High Resolution GCMS using the latest Micromass Ultima Autospec instrumentation. Samples are analysed for the 17 target dioxin/furan congeners to enable calculation of the I-TEQ value with results reported as total and I-TEQ. In order to compare measured data with limit values the results in ng/sample require to be divided by the air sample volume in m3 and then corrected to the appropriate reference conditions.

Table



Dioxins and Furans-WHO 2005
Table



PCBs and PAHs


In addition to the analysis of dioxins and furans as described previously, or as a standalone service, MSSL can undertake the analysis of PCBs and PAHs for stack samples. Polychlorinated Biphenyls (PCBs) and Polycyclic Aromatic Hydrocarbons (PAHs) are sampled using an isokinetic sampling train and analysed by similar methods to Dioxins and Furans. MSSL can provide the appropriate sampling kits on request.

In the Millbrook laboratory analysis is performed using solvent extraction followed by chromatographic clean-up and High Resolution GCMS using the latest Micromass Ultima Autospec instrumentation. Samples are analysed for the WHO-12 group of Dioxin-like PCBs and/or the USEPA 16/Waste Incineration Directive (WID) groups of PAHs.

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Dioxin-like PCBs (WHO-12 suite 2005)
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PAHs (WID suite)
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Gas Composition for Process Stack/Landfill Gas


In addition to the measurement of trace components of a gas stream, a gas compositional analysis can also be provided using a range of sampling media. This can often be of interest for waste gasification/pyrolysis processes or landfill/biogas plant.

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Gaseous Compounds


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Other

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