Analysis of Tire Additive Transformation Products

Oct 6

Written by:
10/6/2023 10:00 AM  RssIcon


Tire and Road Wear Particles
Basic material (40-50%)
Filler (30-35%)
Softeners (10-15%)
Vulcanization agents (2-5%)
Additives (5-10%)

Researchers at the University of Washington Tacoma, UW, and Washington State University Puyallup discovered that 6PPD, an antioxidant preservative, which can oxidize into 6PPD-Quinone, was found to be the toxic chemical responsible for killing Coho salmon in areas with urban runoffs. 6PPD is used as a preservative in nearly all tires and may be present in creeks and waterways near busy roads across the world. The fatal effects of 6PPD-Quinone and other transformation products have been found to impact other species of fish as well.

Since quinones are not currently an EPA Priority Pollutant, many analytical labs are not equipped to test these compounds, leaving water quality experts without options to test run-off or stormwater samples. To meet this emerging need, Weck Labs developed an analytical method using state-of-the-art LC-MS/MS technology, allowing for the detection of five tire antioxidant transformation products.

Analytical Method Details - Weck Laboratories, Inc.
Organic Compounds - Low level by Tandem LC/MS/MS in Water

Method Analyte MRL Units 
EPA 1694M  6PPD-Quinone  2.0 ng/L
EPA 1694M IPPD-Quinone  2.0 ng/L
EPA 1694M 7PPD-Quinone  2.0  ng/L
EPA 1694M DPPD-Quinone  2.0 ng/L
EPA 1694M CPPD-Quinone  2.0 ng/L

Please contact for more imformation. Technical presentations are available.

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