NRSA2324 Nitrate Stable Isotope Ratios

Published by U.S. EPA Office of Research and Development (ORD) | U.S. Environmental Protection Agency | Metadata Last Checked: August 02, 2025 | Last Modified: 2025-06-02

Stable Isotope Ratios of Nitrate from the National Aquatic Resource Survey 2023 and 2024. We analyzed 163 samples with nitrate concentrations above 2 mg-N/L for oxygen and nitrogen isotopes of nitrate. We also include the water stable isotope values for those same samples. Metadata and QA data are provided in the spreadsheet.

Find Related Datasets

Click any tag below to search for similar datasets

Complete Metadata

bureauCode	[ "020:00" ]
identifier	https://doi.org/10.23719/1532320
programCode	[ "020:000" ]
references	null
rights	null