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Pesticide detections in streams throughout the foothills of the Sierra Nevada range using passive samplers from 2017 to 2019

Published by U.S. Geological Survey | Department of the Interior | Catalog Last Checked: May 05, 2026 at 08:21 PM | Dataset Last Updated: March 15, 2021 at 12:00 AM
This dataset was produced from analyzing Affinisep SDB-RPS, Affinisep HLB, and Restek Resprep C18 disks that were deployed with the use of Chemcatcher® passive sampling devices. Silicone bands were also deployed and used for exploring economical methods of sampling for pesticides in surface water. Sampling assemblies were deployed in streams throughout the foothills of the Sierra Nevada range and California's northern Central Valley from 2017 to 2019. Samples were extracted in situ then eluted and concentrated at the Organic Chemistry Research Laboratory in Sacramento, CA. Samples from silicone bands were extracted via agitation in appropriate solvents. Samples were analyzed for a suite of 155 pesticides and degradates with gas chromatography-tandem mass spectrometry and liquid chromatography-tandem mass spectrometry. There were a total of 21 different pesticides detected throughout this study.

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