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This publication is available at https://www.gov.uk/government/publications/monitoring-stack-emissions-techniques-and-standards-for-cems-and-automated-batch-samplers/monitoring-stack-emissions-techniques-and-standards-for-cems-and-automated-batch-samplers

We have structured this index to help you choose an appropriate technique to measure substances using continuous emissions monitoring systems (CEMS).

It also provides information on standards for automatic batch samplers. You can use automatic batch samplers to provide a continuous sample for periods up to 4 weeks. You can use them to provide continuous sampling during the periods that a process operates. Each sample is analysed in a laboratory. This provides a single time-averaged result over each sampling period.

Substances are listed in alphabetical order.

Here are the relevant monitoring techniques and standards.

The relevant monitoring technique is an automated batch sampler using isokinetic sampling, extraction, and then gas chromatography – mass spectrometry (GC-MS) analysis.

The relevant monitoring standard is: CEN TS 1948-5.

EN 16911-2 covers the automatic determination of velocity and volume flow rates in ducts.

Excludes methods specific to monitoring HCl and HF

This table is also for:

Here are the relevant monitoring techniques and standards.

This is an automatic batch sampling technique using paired sorbent media traps. Analytical techniques include:

This technique measures total vapour phase Hg, which represents the sum of the elemental Hg and gaseous forms of oxidized Hg, such as HgCl2.

The analytical range is typically 0.1 to >50 μg/m3.

Although a sample is obtained continuously, results are not instantaneous as you need to take the sorbent media traps to a laboratory for analysis.

The relevant monitoring standard is: PD CEN/TS 17286.

The standard includes performance criteria and test procedures for certifying long-term sampling systems. It also includes procedures for evaluating the ongoing performance of the installed systems.

EN 14884 covers the calibration of mercury CEMS. It is used in conjunction with EN 14181.

This table is also for total sulphur.

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