Natural nitrogen (7 N) consists of two stable isotopes: the vast majority (99.6%) of naturally occurring nitrogen is nitrogen-14, with the remainder being nitrogen-15. Thirteen radioisotopes are also known, with atomic masses ranging from 9 to 23, along with three nuclear isomers.

Nitrogen-15 nuclear magnetic resonance spectroscopy (nitrogen-15 NMR spectroscopy, or just simply 15 N NMR) is a version of nuclear magnetic resonance spectroscopy that examines samples containing the 15 N nucleus.

The following table shows the atomic nuclei that are isotonic (same neutron number N = 8) and isobaric (same nucleon number A = 15) with Nitrogen-15. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

2021年10月14日 · Nitrogen-15 | H3N | CID 107639 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

Nitrogen-15 nuclear magnetic resonance (NMR) spectroscopy is a powerful tool for elucidating natural product structures which contain nitrogen atoms. With steady instrument improvements and new techniques, valuable NMR data can be gathered with increasingly less material (Breton and Reynolds, 2013 ).

Nitrogen-15 (15 N) tracing is a technique to study the nitrogen cycle using the heavier, stable nitrogen isotope 15 N. Despite the different weights, 15 N is involved in the same chemical reactions as the more abundant 14 N and is therefore used to trace and quantify conversions of one nitrogen compound to another.

2017年7月6日 · Nitrogen-15, a stable isotope of nitrogen and an essential plant nutrient, is used to determine the fertilizer use efficiency of crops. It is also used to quantify the amount of nitrogen that crops can acquire from the atmosphere through a process known as …

Nitrogen 15 refers to a stable isotope of nitrogen that is commonly used in isotope analysis techniques to study nitrogen-bearing compounds in various environmental samples. AI generated definition based on: Treatise on Geochemistry (Second Edition), 2014

Nitrogen 15 is an isotope of nitrogen that can be observed using Fourier transform NMR spectroscopy. Unlike the more abundant nitrogen isotope, 14N, nitrogen 15 does not suffer from nuclear electric quadrupole broadening, allowing for …

Nitrogen-15 is a stable isotope of nitrogen, characterized by having seven protons and eight neutrons in its nucleus. This isotope is commonly used in scientific research as a labeling agent in isotope labeling and tracer experiments, allowing researchers to track the pathways and transformations of nitrogen within biological systems.