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Found 476 dataset(s) matching "Analytical methods".
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This data release contains geochemical data for 52 rock samples collected by Russell C. Evarts and colleagues from 1992 to 1999 to support geologic mapping of the Toutle 7.5-minute quadrangle in...
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<p><a href="https://snap.brc.tamus.edu/Home/Index">SNAP (Soil Nutrient Assessment Program)</a>, a component of the <a href="https://soilandwaterhub.brc.tamus.edu/Home/Index">USDA/ARS Soil and...
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Figure summarizes uncertainty (error) in hourly gradient flux measurements by individual analyte. Flux uncertainty is derived from estimates of uncertainty in chemical gradients and turbulent...
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These data were collected by the EPA Toxic Element Bioavailability Laboratory and consists of lead (Pb) and/or arsenic (As) mouse tissue, soil, aqueous soil leachate, and spectroscopy data. The...
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Sulphur Banks, near the summit of Kīlauea Volcano on the Island of Hawai`i, is a thermal area where volcanic gases and steam are discharged. A research well drilled in the 1920s at Sulphur Banks...
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Background Information on the effectiveness of elementary school level, tobacco-use prevention programs is generally limited. This study assessed the impact of a structured, one-time...
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This data set includes monthly counts and rates (per 1,000 beneficiaries) of contraceptives, including any contraceptives and long-acting reversible contraceptives, provided to female Medicaid and...
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Particulate samples were collected from a fish hatchery in Puyallup, Washington, September 18 – 20, 2023 during late summer, low-flow conditions in the intake creek. Settled solids were collected...
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<p>The data set contains stream water concentrations of herbicides and nutrients for 153 sites in the northern Missouri/southern Iowa region from 1994 to 1995. The data are available in Microsoft...
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This data release documents four tables that contain data for assessing the susceptibility of groundwater using environmental tracers collected from public-supply wells located in the Northern...
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Elevated concentrations of metals including aluminum, arsenic, and lead were identified by Navajo Nation Environmental Protection Agency staff in the San Juan River from below the Navajo Dam,...
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Radiocarbon dating of silicified wood was performed at the U.S. Geological Survey’s Radiocarbon Laboratory in Denver, Colorado. All samples were chemically treated using the standard...
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<p>A great deal of effort has gone into the development of point-of-use methods to meet the challenge of rapid bacterial identification for both environmental monitoring and clinical...
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This data release contains analytical data from a suite of rock samples collected within the Bear Lodge alkaline complex, northeast Wyoming, which hosts the Bear Lodge rare earth element (REE)...
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Child Welfare Training Grant funds are authorized each fiscal year for grants to public or other non-profit institutions of higher learning for special projects to train personnel for work in the...
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<p dir="ltr"><i>Insects</i></p><p dir="ltr">The<i> S. fulvus</i> used in this experiment were progeny of field-collected weevils. As described by Prasifka et al. (2015), adult weevils were...
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In cooperation with the Texas Commission on Environmental Quality (TCEQ), the U.S. Geological Survey (USGS) utilized various field and laboratory methods to determine the presence and...
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To ensure comparable spatial and temporal coverage with similar historic datasets, we flew 32 east-west-oriented uniform transects (spaced at 15' latitude [27.8-km] intervals) when possible to the...
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<p style='box-sizing:border-box; margin-bottom:12px; margin-top:0px; max-width:100%;'><span style='color:rgb(0,0,0); font-family:"Open Sans", "Avenir Next";...
