Title: DOUBLE DECOMPOSITION RADIO RELEASE ANALYSIS FOR CALCIUM AND PHOSPHATE IONS. Final Report
Abstract: A rapid procedure for analysis of calcium and phosphate ions in fertilizer samples using the double-decomposition radio-release technique proved unsuccessful. The radiorelease system is based on a difference in solubility of two compounds. A solution containing the radio-inactive ion of interest is passed through a column of some material, perhaps an ion exchanger, containing a radioisotope. A chemical reaction takes place whereby the inactive ion is retained on the colunm and the radioactive species is released. This latter species is subsequently detected and the counting rate is directly related to the concentration of the influent ion of interest. While several of the columns exhibited satisfactory behavior when used with calcium alone and at a certain pH, the presence of other divalent ions or a lower pH of the solution released the radioactive ion from the column and thereby obscured the calciuminfluenced release. The same results were obtained with phosphate ions. The principle of radio-release was successfully applied to the determination of aqueous dissolved oxygen by its action on thallium metal releasing thallous ions, and to the determination of vanadate ions for use as a radioactive surface water tracer by its action on a silver metal column releasing silver ion. (N.W.R.)
Publication Year: 1962
Publication Date: 1962-12-31
Language: en
Type: article
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot