FAYETTEVILLE, GA, UNITED STATES, July 2, 2025 /⁨EINPresswire.com⁩/ -- Researchers explore how 6-PPD quinone (6-PPDQ), an environmental contaminant derived from tire antioxidant N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD), affects the citric …