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| Created: | Apr 06, 2026 at 9:42 p.m. (UTC) | |
| Last updated: | Apr 06, 2026 at 9:52 p.m. (UTC) | |
| Citation: | See how to cite this resource |
| Sharing Status: | Public |
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Abstract
Sampling was conducted from October 2022-September 2024 across 7 sites (listed above from downstream to upstream) in the Northwest Arkansas region at Mullins Branch. Mainstem sites are listed with an "M" in the third character of the site name, whereas tributary sites are listed with either "A" or "B" in the third character of the site name. Samples were filtered in-field with glass fiber filters (Type GF/F) and transported to lab on ice. Samples were stored at -4*C until analysis. The majority of nutrients were analyzed using a SEAL AA500 Autoanalyzer. Nitrate was measured using SEAL method MT507A (cadmium reduction method). Soluble reactive phosphorus was measured using SEAL method MT519 (molybdenum blue method). Ammonium was measured using SEAL method MT519 (indophenol blue method). Some samples were analyzed at the Arkansas Water Resources Center (AWRC) and are so marked in the notes of the compiled data. Nutrients at the AWRC were measured using a Skalar San ++ System Autoanalyzer for nitrate using EPA method EPA 353.2, soluble reactive phosphorus using EPA method EPA 365.1 and ammonium using EPA method EPA 351.2. Standard QAQC procedures were followed incorporating evaluation of both standard curves and check standards run routinely throughout the analysis.
Subject Keywords
Coverage
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| Name | Organization | Address | Phone | Author Identifiers |
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| Kathleen Cutting | ||||
| Alana Strauss | ||||
| Amadeo Scott |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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