Opsis DOAS for the measurement of air pollutants

Kevin Wyche

Many of today’s air quality analysers are based on the more traditional point source monitoring technologies, the lesser known DOAS open-path system from Opsis is different and offers many advantages over more conventional methods.

In the paper Differential Optical Absorption Spectroscopy for the Measurement of Air Pollutants produced by DR Kevin Wyche and DR Kirsty Smallbone for project Joaquin (Joint Air Quality Initiative) at the University of Brighton in 2015, they explore its performance when measuring NO2, O3, SO2, HCHO and HONO.

The research concludes that DOAS technology offers an excellent platform to provide high time resolution long term monitoring of air pollutants with high specificity and sensitivity.

Sometimes it’s good to be different.

You can read the full paper here.

Kevin Wyche Paper
By measuring over a wide path, the Opsis DOAS Open-path system gives an average measurement. This means the data is more representative and can be a far more effective technique for applications involving modelling and forecasting which allows for an early warning system for high pollutant episodes so that preventative measures can be taken to reduce the impact.

The Opsis Open-path system can be configured to measure multiple gases in one system including NO, NO2, SO2, O3, Benzene, Toluene, Xylene, Formaldehyde, NH3 etc.

As an internationally approved (MCERTS), multi-parameter, monitoring solution, the Opsis Open-path system really is an emerging future technology for measuring AQ.

In the video below you can see how the Opsis Open-path system has been effective in helping Swansea City Council forecast high pollution episodes which has allowed them to put preventative measures in place to reduce the impact.

For more information on how the Opsis Open-path system can work for you, call to speak to one of our specialists today.

01453 733200    sales@et.co.uk    www.et.co.uk

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