Investigating the HCBM – GCxGC relationship: an elution model to interpret GCxGC retention times of petroleum substances

Oct 8, 2019

Report no. 10/19: Risk assessments on petroleum substances (PS) are challenging due to the fact that these complex materials contain thousands of individual chemical components having widely differing physico-chemical characteristics, environmental degradation rates,...

Biodegradation testing of volatile hydrophobic chemicals in water-sediment systems – Experimental developments and challenges

Aug 10, 2019

Degradation data are crucial for the persistence assessment of chemicals and they are generated using standard OECD guidelines. The OECD 308 describes a simulation biodegradation test of chemicals in water-sediment systems. This guideline is not applicable for testing...

Air pollutant emission estimation methods for E-PRTR reporting by refineries

Jul 31, 2019

Report no. 4/19: This report is an update of the Concawe publication “Air Pollutant Emission Estimation Methods for EPER and PRTR Reporting by Refineries”. It provides algorithms to permit emission estimates to be made by refineries to meet the reporting requirements...

Benzene Monitoring: Technical aspects of the OEL proposal of 0.05ppm

Mar 22, 2019

If the benzene OEL is lowered as recommended by RAC, the petroleum industry would need to consider: 1. Monitoring methods should target a lower OEL and therefore must be updated accordingly. 2. The number of samples needed for the survey will be higher. With an OEL of...

Mixture effects on biodegradation kinetics of hydrocarbons in surface water: Increasing concentrations inhibited degradation whereas multiple substrates did not

Feb 25, 2019

Most biodegradation tests are conducted using single chemicals at high concentrations, although these chemicals are present in the environment as mixtures at low concentrations. A partitioning-based platform was recently developed for biodegradation testing of...