Oxygen, for example, has eight protons. However, the number of neutrons in an atom can vary, leading to different forms of ...

Erik Pollock, a geoscientist at the U of A, is the lab manager of the University of Arkansas Stable Isotope Lab and the Trace Element and Radiogenic Isotope Lab.

Hundreds of millions of years before oxygen surged in the atmosphere 2.4 billion years ago, swaths of oxygen winked in and out of existence in the ocean.

About 12 million years ago, huge herds of rhinos roamed the lands of North America. There was a long-standing mystery around a fossil site in northeast Nebraska – Ashfall Fossil Beds State Historical ...

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 of N 2 O using the denitrifier gas bench method.

This measurement provides carbon, oxygen and “clumped” isotope ratios for carbonate minerals, which enables us to reconstruct the temperature at which the carbonate formed, along with information ...

and the sum of the protons and neutrons gives the atomic mass, the number of neutrons defines the isotope of that element. For example, most carbon (≈ 99 %) has 6 protons and 6 neutrons and is written ...

Her goal is to create maps using a variety of isotopes. For instance, levels of oxygen isotopes can tell scientists whether a person lived in a warm, dry region or a moist, tropical one.

training in isotope data post processing and QA/QC practices; and the use of the LIMS for Lasers software, a laboratory management system designed for the standardized analysis of oxygen-18 and ...