New papers this month

6PPD-Quinone: Revised Toxicity Assessment and Quantification with a Commercial Standard

A 2022 article in the journal Environmental Science & Technology Letters revises previous findings on the environmental concentration and toxicity of 6PPD-Quinone, a novel compound lethal to coho salmon. The paper reports that 6PPD-Quinone, a chemical resulting from tire wear particles, “was more toxic than previously calculated and should be categorized as a ‘very highly toxic’ pollutant for aquatic organisms.” Authors include our colleagues at the Center for Urban Waters and the Puget Sound Institute as well as researchers at the Washington Stormwater Center and the School of the Environment at Washington State University.

Tian, Z., Gonzalez, M., Rideout, C. A., Zhao, H. N., Hu, X., Wetzel, J., Mudrock, E., James, C.A., McIntyre, J. K., & Kolodziej, E. P. (2022). 6PPD-Quinone: Revised Toxicity Assessment and Quantification with a Commercial Standard. Environmental Science & Technology Letters.

Also available:

Characterizing the Chemical Profile of Biological Decline in Stormwater-Impacted Urban Watersheds

Our colleague Kathy Peter is lead author of a new study that identifies 32 well-known chemical contaminants as potential indicators of stream health in the Puget Sound region. The findings were published last month in the journal Environmental Science & Technology.

Peter, K. T., Lundin, J. I., Wu, C., Feist, B. E., Tian, Z., Cameron, J. R., Scholz, N.L., & Kolodziej, E. P. (2022). Characterizing the Chemical Profile of Biological Decline in Stormwater-Impacted Urban Watersheds. Environmental Science & Technology.

Assessing Reliability of Non-targeted High-Resolution Mass Spectrometry Fingerprints for Quantitative Source Apportionment in Complex Matrices

Kathy Peter and Ed Kolodziej are co-authors of a paper discussing High Resolution Mass Spectrometry “fingerprint mining” of contaminants in the environment. Their study suggests that rich datasets from non-targeted screening of chemicals could aid managers working to clean up contaminated systems. The paper was published last month in the journal Analytical Chemistry. 

Peter, K. T., Kolodziej, E. P., & Kucklick, J. R. (2022). Assessing Reliability of Non-targeted High-Resolution Mass Spectrometry Fingerprints for Quantitative Source Apportionment in Complex Matrices. Analytical Chemistry, 94(6), 2723-2731.