Related Experiment Video
Updated: May 4, 2026

Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films
Published on: November 9, 2015
Mass spectrometric determination of 234U/238U ratio with improved precision
Ejaz ur Rehman1, Riffat Naheed, Shakeel ur Rehman
1Applied Chemistry Laboratories, PINSTECH, P.O. Nilore, Islamabad, Pakistan. erehman@gmail.com
Abstract:
A new mass spectrometric method is proposed for measurement of 234U/238U ratio with a single Daly electron multiplier detector using the general peak jump method. The method is based on precise measurement of the 235U/238U ratio and 234U/235U ratio, which are used to calculate the 234U/238U ratio using the equation 234U/238U = 235U/238U x 234U/235U. The results show a significant improvement, i.e., more than 35 times better precision in measuring the (234)U/(238)U ratio with this method (sigma = 2.9 x 10(-8)) as compared to direct measurement of 234U/238U (sigma = 1.1 x 10(-6)). The method widens the applicability of the single collector system, and it will potentially be helpful to improve the precision in the case of the static multicollector system also.
Related Concept Videos
Radioactive Decay and Radiometric Dating
High-Resolution Mass Spectrometry (HRMS)
Mass Spectrometry: Isotope Effect
Mass Analyzers: Overview
Atomic Absorption Spectroscopy: Lab
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
Atomic Emission Spectroscopy: Overview

