6PPD-quinone made a major impact in the world of environmental analysis in 2021 when it was identified as the primary cause of death to Coho salmon in the Pacific Northwestern United States. 6PPD-quinone is an oxidative by-product of antioxidant/antidegradant 6PPD (N-(1,3-dimethylbutyl)-N'-...
when it reacts with ozone it transforms into several different byproducts, including 6PPD-quinone. A recent study has determined that 6PPD-quinone is highly toxic to coho salmon, resulting in death when exposure to sufficiently high concentrations via stormwater...
RED drum (Fish)URBAN watershedsEMBRYOLOGYFISH killsRecently, large-scale fish kills in the Pacific Northwest were linked to tire wear particles (TWPs) left on roadways, with the lethality attributed to 6PPD-quinone. which has a median lethal concentration of <1 g/L for selected salmonids. ...
It transforms into a highly toxic compound called 6PPD-quinone (6PPD-Q), which has been identified as the cause of sudden coho salmon deaths in the Pacific Northwest [2]. The LC50 value for its toxicity in coho salmon was confirmed to be 95.00 ng/L [3], which is significantly lower ...
Stormwater exposure can cause acute mortality of coho salmon ( Oncorhynchus kisutch ), and 6PPD-quinone (6PPD-Q) was identified as the primary causal toxicant. Commercial standards of 6PPD-Q recently became available; their analysis highlighted a systematic high bias in prior reporting concerning 6PPD...
The environmental concentration of 6PPDQ (0.04–2.3 µg/L) on the West Coast of the United States had exceeded the semi-lethal concentration of silver salmon (LC50 = 0.79 ± 0.16 µg/L) [2]. Additionally, 6PPDQ adversely affected other aquatic organisms, resulting in the phenomenon ...
Anne Cécile Rémont, the director of the TIP said that after the coho salmon study, the US Tire Manufacturing Association (USTMA) has been involved in discussions with regulators and stakeholder on “potential alternatives” ...
Prompted by a recent report that 6PPD-quinone (6PPD-q), a by-product of a common tire manufacturing additive that is present in road runoff, is toxic to coho salmon ( Oncorhynchus kisutch ), extracts of water samples collected from an urban river were re-analyzed to determine if this ...
Although in vitro sensitivity of RTgill-W1 cells may not be as sensitive as intact Coho salmon, the assay may be a promising approach to test chemicals for 6PPD-quinone-like activities. The other assays each identified unique bioactivities of 6PPD, with neurobehavioral and developmental ...
In the environment, 6PPD rapidly reacts with ozone to form 6PPD-quinone (6PPD-Q), which is neurotoxic to coho salmon, causing massive mortality events after runoff [10]. Recent studies show that while 6PPD has a short half-life and low detection frequency in aquatic environments [15], 6PPD...