However, about 1 % of the carbon in the Earth’s biosphere has 6 protons and 7 neutrons (13C) forming the heavy stable isotope of this important element. Stable isotopes do not decay into other ...

The ratios of heavy, rare oxygen-18 to lighter, common oxygen-16 are highest in red and orange areas of the bottom map, and lowest in the blue and darker green areas. Credit University of Utah ...

China National Nuclear Corporation’s (CNNC) first-ever commercial reactor for the production of isotopes has officially opened. Called the Qinshan Nuclear Power Base plant, it has already ...

MESSRS. R. P. BELL and J. H. Wolfenden 1 have recently given their experience in concentrating the hydrogen isotope, namely, that nickel, platinum and copper are about equally efficient as ...

In heavy water, each hydrogen atom is indeed heavier, with a neutron as well as a proton in its nucleus. This isotope of hydrogen is called deuterium, and heavy water's more scientific name is ...

With standard single quadrupole GC/LC-MS, accurate detection of isotopic abundance is limited to ∼0.1 atom percent excess – equivalent to having 0.1% more heavy isotope than normal in the system.

While deuterium H-2, an isotope twice as heavy as hydrogen, is predominantly used in nutrition research, nitrogen-15 is the most common stable isotope used in agriculture. Many other stable isotopes ...