some links from Google Scholar https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=jennifer+mcintyre+salmon&btnG=&oq=jennifer+mcintyre https://scholar.goog

some links from Google Scholar https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=jennifer+mcintyre+salmon&btnG=&oq=jennifer+mcintyre https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=jenn... " a Ph.D. student, Haoqi Nina Zhao, suggested a new way to separate out chemicals that led to a prime suspect. But they couldn’t test it, because they didn’t know what it was. “It’s almost like you have a fingerprint,” Dr. Tian said. “But you really don’t know who this is, because in your database, this fingerprint doesn’t exist.” Dr. Tian’s “aha!” moment came one morning. Guessing that the mystery chemical had transformed from a substance originally added to the tire, he looked for a compound whose carbon and nitrogen molecules matched, ignoring the oxygen and hydrogen, since the latter are more likely to be altered when a chemical transforms. In an Environmental Protection Agency report on tire rubber, he found a match: an antioxidant called 6PPD. The researchers ordered the smallest amount they could, about a pound of purple pellets. When they oxidized the substance, the resulting chemical looked just like the one they had worked so hard to isolate from the tire water. It was time to test this version, 6PPD-quinone, on the salmon. “I find it incredibly sad to watch fish die,” Dr. Kolodziej said. “You’re just watching these fish struggle. And yet you’re happy you understand why.” The killer was the 6PPD-quinone from the tires in the roadway runoff. “The analysis that they did is really amazing,” said Nancy Denslow, a professor and director of aquatic toxicology at the University of Florida who was not affiliated with the study. She also praised the large number of authors. “It’s wonderful to see big groups of people coming together to solve problems,” she said. “Group science is fantastic.” -- How Scientists Tracked Down a Mass Killer (of Salmon) https://www.asf.ca/how-scientists-tracked-down-a-mass-killer-of-salmon/ https://www.asf.ca/how-scientists-tracked-down-a-mass-killer...