Andrew Patterson (Eurofins Environment Testing America) and Brent Pautler, Ph.D. (SiREM) to present “6PPD-Quinone: What have we learned in less than a year about this emerging contaminant?” in SiREM’s next webinar on November 4th, 2021 12:00 p.m. – 1:00 p.m. EST.

Andrew is the Technical Director for Eurofins Environment Testing America for the Specialty Services division. He brings 20 years of experience in the environmental laboratory industry with a focus on HRGC/HRMS analyses and also LC-MS/MS analyses. These approaches have focused on PCBs, Dioxins, brominated flame-retardants, PFAS and emerging contaminants. He is among a handful of Eurofins scientists focused on advanced analytical techniques such as Non-target Analysis (NTA) via LC-QToF instrumentation. Prior to Eurofins, Andrew was the Technical Director for an analytical laboratory in Northern California where he developed PFAS and PPCP (Pharmaceuticals and personal care products) capability within the lab and oversaw HRMS operations. Andrew holds a Bachelor’s of Science in Microbiology with a concentration in Biochemistry from Cal Poly San Luis Obispo, California, USA.


Brent received his Ph.D. in environmental analytical chemistry in 2013 where he gained advanced technical experience in spectroscopy, chromatography, mass spectrometry, passive sampling, and chemistry informatics. Throughout his career, he has worked with scientists, engineers, and consultants, applying his chemistry and information technology expertise to help them solve unique problems in the laboratory and the field. His role includes managing and advancing SiREM’s passive sampling portfolio, analytical testing services while supporting CSIA business development.


Presentation Description

The recent publication by the University of Washington (UW) in the scientific journal Science was a major breakthrough in understanding the challenges wild-run salmon face. Every Spring and Fall, millions of Salmon voyage back into their native rivers and streams to spawn. Unfortunately, significant numbers of Coho Salmon never make it to the spawning grounds.

The breakthrough at UW was identifying the acutely toxic compound to the Salmon: 6PPD-quinone. The compound, 6PPD, starts as a tire additive designed to prevent tires from breaking down and aides in meeting federal safety guidelines. These important compounds are known as antidegradants and can protect tires from anything from sunlight to oxygen to extreme temperatures. In the very process of protecting tires from oxidation, 6PPD is transformed into 6PPD-quinone, which was unknowingly toxic to Coho Salmon. As tires wear, the worn rubber is continuously deposited on roadways. This deposited material invariably makes its way into waterways through runoff from rains. Although rain naturally dilutes the runoff, the 6PPD-quinone was found to be toxic at the low concentrations found within streams and rivers.

It is still unknown how widespread this compound is in the environment, but Eurofins maintains advanced instrumentation to be able to confirm with absolute certainty the presence of 6PPD-quinone. This webinar will discuss the emerging contaminant 6PPD-quinone and the means to quantitate it in environmental samples.

More Information

Register for the Webinar: here
About Eurofins Environment Testing America:
For consultation regarding SiREM’s 6PPD-Quinone and other emerging contaminants contact Brent at

View previously recorded webinars. >>