Measurements of fugitive emissions of vocs from stationary sources using the SOF method - Standardization efforts and results from recent studies in California
Paper i proceeding, 2019

The Solar Occultation Flux (SOF) method is used to screen and quantify VOC emissions from industrial conglomerates down to sub-areas in individual plants, such as a few tank process area or water treatment areas. The SOF method has been applied in several larger campaigns in both Europe and in the US (Mexico City 2006, Texas 2006/2009/2011/2012; Le Havre 2008, Rotterdam 2008/2010 and Antwerp 2010/2016, California 2013/20T5, Tianjin China 2016) and in more than 100 individual plant surveys over the world. The technique has been validated by comparison to other methods and tracer gas releases and it typically has an uncertainty of 30%, mostly due to uncertainties in the wind field. In the various campaign studies it has been found that the measured emissions obtained with SOF are 3–10 times higher than the reported emission obtained by calculations. The SOF method is Best Available Technology in Europe for quantitative measurements of diffuse emissions from refineries and the chemical sector. The technique is presently being standardized by the European CEN.


Johan Mellqvist

Chalmers, Rymd-, geo- och miljövetenskap, Mikrovågs- och optisk fjärranalys

Brian Offerle

FluxSense AB

Jerker Samuelsson

FluxSense AB

Samuel Brohede

FluxSense AB

Pontus Andersson

FluxSense AB

Oscar Isoz

FluxSense AB

Marianne Ericsson

FluxSense AB

Olga Pikelnaya

South Coast Air Quality Management

Andrea Polidori

South Coast Air Quality Management

AQM 2019 - Air Quality Measurement Methods and Technology Conference 2019

Air Quality Measurement Methods and Technology Conference 2019, AQM 2019
Durham, USA,


Annan naturresursteknik



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