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Found 476 dataset(s) matching "Analytical methods".
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This digital dataset contains historical geochemical and other information for 580 samples of groundwater from 12 wells located within the Placerita and Newhall Oil Fields in Los Angeles County,...
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Filtered water samples were collected by the USGS National Water Quality Program (NWQP) Southeastern Stream Quality Assessment (SESQA) from 59 perennial, wadeable (less than 10 m width and 1 m...
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This data release presents chemical and biological results from investigations of water quality, fish endocrine disruption, and emergent insects in the Shenandoah River Watershed (Virginia and...
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This report summarizes the data collection and analytic methods and results for the 2012 Questionnaire Field Test (QFT) for the National Survey on Drug Use and Health (NSDUH). The 2012 QFT is...
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The supplementary data is used to support the interpretation of electrochemical reaction at the interface of working electrode, and reaction features of the immobilized enzyme. The formula for...
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SRM 1633c Trace Elements in Coal Fly Ash - This Standard Reference Material (SRM) is intended for use in the evaluation of analytical methods for the determination of constituent elements in coal...
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The assessment of different aspects of hydromorphic conditions through time and space may assist in explaining the various stressors contributing to stream condition such as habitat alteration....
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SARS-CoV-2 Data from National Wastewater Surveillance System Surge Capacity Sampling, September 2021
Wastewater-based epidemiology (WBE) is used to determine the consumption of, or exposure to, chemicals or pathogens in human populations, and is conducted by collecting representative samples of...
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This dataset provides analysis results for recent status of and trends in 44 fish and 99 macroinvertebrate assemblages in the Chesapeake Bay watershed. For both biological datasets a multi-metric...
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From 2018 to 2024 surface waters (fresh and brackish), groundwater, and stormwater (runoff, re-use) samples were collected from sites with varying landuse (agricultural, forested, and urban) and...
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Water samples from the Platte River were collected and analyzed for environmental DNA (eDNA). The U.S. Geological Survey (USGS) Nebraska Water Science Center (NEWSC) collected samples monthly from...
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The ecological implications of rising stream temperatures are a concern to resource managers throughout the Chesapeake Bay watershed. This dataset provides analysis results for the recent status...
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This table derives from the first of two papers describing the second data release (DR2) of the Australia Telescope Large Area Survey (ATLAS) at 1.4 GHz. This survey comprises deep wide-field...
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This dataset includes field measurements and laboratory analyses of surface water, bottom water (sediment-water interface), surficial (0-2 cm) sediment, pore water (0-2 cm), and biota collected in...
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This Data Release provides tabular and geospatial data digitized by the U.S. Geological Survey (USGS) from a U.S. Bureau of Mines (USBoM) report titled Mineral Investigation of Sangre de Cristo...
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This dataset provides results for status and trends of hydromorphology in the Chesapeake Bay watershed based on field-based rapid habitat metrics collected by multiple jurisdictions during habitat...
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Understanding biotransformation pathways in aquatic species is an integral part of ecological risk assessment with respect to the potential bioactivation of chemicals to more toxic metabolites....
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This data release supports the following publication: Mast, M. A., 2018, Estimating metal concentrations with regression analysis and water-quality surrogates at nine sites on the Animas and San...
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The presence of harmful algal species, which produce toxins, pose a significant threat to public health and coastal aquaculture activities. For example, estimated losses due to biotoxin closures...
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Validated analytical chemistry methods for measuring anatoxin-a in urine. This dataset is associated with the following publication: Cunningham, B., S. Lagon, W. Bragg, D. Jenkins-Hill, R....
