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13 results about "Isotopic ratio" patented technology

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Definition. Isotopic ratio refers to the ratio of the atomic abundances of two isotopes of the same element, e.g., 18 O/ 16 O or 143 Nd/ 144 Nd. An advantage of using ratios rather than absolute abundances of a particular nuclide is a better precision. Comparing the two signals 143 Nd and 144 Nd can be done at the ppm (one part in one million)...