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New monitoring approaches and national heat‑maps help target 6PPD quinone hotspots
Summary
Researchers and agencies described large‑scale monitoring networks, high‑throughput lab methods and a USGS national heat‑index tool aimed at prioritizing sampling and retrofit investments where 6PPD quinone exposure risk to salmonids is highest.
A substantial portion of Day 1 focused on where and how to measure 6PPD quinone in the environment. Presentations ranged from volunteer‑led, high‑throughput programs on Vancouver Island to a U.S. Geological Survey national heat‑index and local real‑time field mass‑spectrometry demonstrations.
Tanya Brown (Simon Fraser University) and colleagues reported monitoring across nearly 100 sites and roughly 2,000 samples in British Columbia; early findings show many salmon‑bearing streams exceed screening…
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