Naturally-occurring stable isotopes of water and other substances are used to trace the origin, history, sources, sinks and interactions in water, carbon and nitrogen cycles. Stable isotopes can also ...

The isotopes of nitrogen-15 and phosphorous-32 are used to trace the movements of labelled nitrogen and phosphorous fertilizers in soils, crops and water, providing quantitative data on the efficiency ...

One of the most important applications of nitrogen stable isotopes is its ability to determine ... which is applicable to all migratory species (Figure 1). Deuterium ratios vary strongly with ...

In 2024, we added a Thermo 253 Plus Isotope Ratio Mass Spectrometer which is dedicated to high precision analysis of nitrogen and oxygen isotope ratios ... We value the educational experience of all ...

They also collected soil, crop residue, and fertilizer samples to analyze nitrogen concentrations as well as naturally occurring, stable isotopes of nitrogen and oxygen, the two elements that make ...

Limnology and Oceanography, Vol. 59, No. 5 (2014), pp. 1493-1509 (17 pages) We used δ15N-nitrate ( NO 3 − ) and δ 18 O-NO 3 − to unravel the provenance and fate of NO 3 − in a groundwater-fed estuary.

Elizabeth D. Hetherington, Robert J. Olson, Jeffrey C. Drazen, Cleridy E. Lennert-Cody, Lisa T. Ballance, Ronald S. Kaufmann, Brian N. Popp https://www.jstor.org ...