6-PPD-Quinone in environmental waters: a concern on itself or an indicator of a larger problem?

Presented on April 28, 2022, by Ruth Marfil-Vega - Shimadzu Scientific Instruments - at the 2022 Emerging Contaminants in the Environment Conference (ECEC22)

Attention was recently brought to N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine-quinone (6-PPD-quinone) because of its role in the mortality of Coho salmon population in the Pacific Norwest streams. 6-PPD-quinone is an oxidation product of N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD). 6-PPD is used ubiquitously in tire rubber as an antioxidant. 6-PPD when released from vehicle tires gets converted to 6-PPD-quinone by reaction with ozone; the chemicals find their way to the streams where Coho salmon inhabits through stormwater run-off. Occurrence of 6-PPD-quinone is linked to a major environmental emerging concern, the ubiquitous distribution of tire-ware particles in the environment. In this presentation, we will provide an overview of the occurrence and effects of 6-PPD-quinone. We will also share a LCMS-based method optimized for its rapid detection in surface waters.