Beyond the Tailpipe Research

As the project progresses, we will present descriptions of some of our experiments and data findings based on the four areas of investigation:

  • Group 1: Generation of tire and brake particles; development of approaches to probe their chemical composition and that of any associated gases; oxidation of those particles and gases and identification of oxidation products
  • Group 2: Toxicology, health effects, and population-level exposures (Kleinman lab in photo)
  • Group 3: Field measurements in Santa Ana
  • Group 4: Communities, dissemination, data management, and EJ policy formation

Group 1:

Generation of tire and brake particles; development of approaches to probe their chemical composition and that of any associated gases; oxidation of those particles and gases and identification of oxidation products

March 20, 2022:  News Item:  A toxic chemical released from 'tyres' as they wear down on roads and implicated in mass deaths of salmon in the United States has been found in an Australian waterway for the first time.  Read the article

March 9, 2022: A new experiment was successfully run by the thermal degradation sub-group under lab conditions using the equipment parameters determined in prior tests and maximizing the collection procedure to include everyone's measurements.

February 23, 2022: After their first successful experiment, the thermal degradation sub-group met to discuss options for additional experiments to be carried out.  Those involved compiled their flow information and tested the oven in preparation for these studies. 

January 21, 2022: Group 1 ran a first exploratory thermal degradation study this week on the old brake pads from Don's truck.  The Blake group also took air samples in canisters that were analyzed for pollutants.

December 3, 2021:  After the first very rough try at investigating gases coming from Don's truck brakes, the experiment was repeated in the Rowland Hall loading dock area.  Additional equipment and more team members were added with some modifications to the collection process.  Between the canister measurements and PTR-MS, there are some intriguing, and as far as can be determined from literature, unique results. Read the article

November 12, 2021:  Members of Group 1 did their first "truck experiment" with the goal of seeing if they could generate and capture VOCs from brakes, which they did!   Don Blake peeled out and drove doughnuts around Lot 12-A in his old truck while pressing the brakes, then the group took air samples and had some surprisingly good results. 

Group 4:

Communities, dissemination, data management, and Environmental Justice policy formation

April 25, 2022:  Update on research tasks and projects from group 4.  Read the report