An Improved Method for Determination of Ra-228*

3/7/00


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Table of Contents

An Improved Method for Determination of Ra-228*

Naturally-Occurring Radium Isotopes

Problems in the Assay of Radium

Flow Chart - Ln•Resin Method

Calculations

Elution Curve — Ln•Resin

Problems/Improvements

New “Combined” Approach

Uptake of Ac via Actinide Resin

The “Double-Pass” Approach

Water Samples: MnO2 ppt

Hold-back of 90Sr

Large Volume Seawater Samples

Smaller-Scale MnO2 ppt

Count Overnight

Decay Component Analysis

Ba Yields: MnO2 ppt

Ra-228 Test Results

Summary

Author: Eichrom

Email: info@eichrom.com

Home Page: http://www.eichrom.com

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