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Title: SEPARATION OF CALCIUM AND STRONTIUM BY LIQUID ION EXCHANGE. DETERMINATION OF TOTAL RADIO-STRONTIUM IN MILK

Abstract

A rapid liquid ion exchange method is described for separating quantities of calcium from strontium in dilute acid solution. Separate extractions were made with di-2ethylhexyl phosphoric acid (HDEHP) dissolved in toluene after stepwise pH adjustments of the aqueous solution. Calcium, strontium, and other cations in 250 ml of milk were first concentrated in 60 ml of dilute HCl solution by a batch ion exchange resin technique. After separation of calcium and radiostrontium by the liquid ion exchange method, Sr/sup 89/ and Sr/sup 90/ were stripped from the final organic phase with 3N HNV/sub 3/ and precipitated from fuming nitric acid. The counting planchet contained only 2% of the calcium and 85 plus or minus 51% of the strontium in the original milk sample. Decontamination factors for Y/sup 90/, Cs/sup 137/, K/sup 40/, La/sup 14 and I/sup 131/ were greater than 10/sup 3/. Ballo, if present, can be removed by homogeneous precipitation of barium chromate. (auth)

Authors:
Publication Date:
Research Org.:
E. I. du Pont de Nemours; Co., Aiken, S.C.
OSTI Identifier:
4149922
NSA Number:
NSA-18-001514
Resource Type:
Journal Article
Journal Name:
Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed.
Additional Journal Information:
Journal Volume: Vol: 35; Other Information: Orig. Receipt Date: 31-DEC-64
Country of Publication:
Country unknown/Code not available
Language:
English
Subject:
CHEMISTRY; ACIDITY; ALKYL RADICALS; BARIUM 140; BARIUM OXIDES; CALCIUM; CESIUM 137; CHROMIUM OXIDES; COUNTERS; DECONTAMINATION; DEHPA; ENRICHMENT; HYDROCHLORIC ACID; IODINE 131; ION EXCHANGE; LANTHANUM 140; MILK; NITRIC ACID; ORGANIC PHOSPHORUS COMPOUNDS; PHOSPHORIC ACID; POTASSIUM 40; PRECIPITATION; QUANTITATIVE ANALYSIS; SEPARATION PROCESSES; SOLUTIONS; SOLVENT EXTRACTION; STRONTIUM; STRONTIUM 89; STRONTIUM 90; TOLUENE; VAPORS; WATER; YTTRIUM 90

Citation Formats

Butler, F E. SEPARATION OF CALCIUM AND STRONTIUM BY LIQUID ION EXCHANGE. DETERMINATION OF TOTAL RADIO-STRONTIUM IN MILK. Country unknown/Code not available: N. p., 1963. Web.
Butler, F E. SEPARATION OF CALCIUM AND STRONTIUM BY LIQUID ION EXCHANGE. DETERMINATION OF TOTAL RADIO-STRONTIUM IN MILK. Country unknown/Code not available.
Butler, F E. 1963. "SEPARATION OF CALCIUM AND STRONTIUM BY LIQUID ION EXCHANGE. DETERMINATION OF TOTAL RADIO-STRONTIUM IN MILK". Country unknown/Code not available.
@article{osti_4149922,
title = {SEPARATION OF CALCIUM AND STRONTIUM BY LIQUID ION EXCHANGE. DETERMINATION OF TOTAL RADIO-STRONTIUM IN MILK},
author = {Butler, F E},
abstractNote = {A rapid liquid ion exchange method is described for separating quantities of calcium from strontium in dilute acid solution. Separate extractions were made with di-2ethylhexyl phosphoric acid (HDEHP) dissolved in toluene after stepwise pH adjustments of the aqueous solution. Calcium, strontium, and other cations in 250 ml of milk were first concentrated in 60 ml of dilute HCl solution by a batch ion exchange resin technique. After separation of calcium and radiostrontium by the liquid ion exchange method, Sr/sup 89/ and Sr/sup 90/ were stripped from the final organic phase with 3N HNV/sub 3/ and precipitated from fuming nitric acid. The counting planchet contained only 2% of the calcium and 85 plus or minus 51% of the strontium in the original milk sample. Decontamination factors for Y/sup 90/, Cs/sup 137/, K/sup 40/, La/sup 14 and I/sup 131/ were greater than 10/sup 3/. Ballo, if present, can be removed by homogeneous precipitation of barium chromate. (auth)},
doi = {},
url = {https://www.osti.gov/biblio/4149922}, journal = {Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed.},
number = ,
volume = Vol: 35,
place = {Country unknown/Code not available},
year = {Sun Dec 01 00:00:00 EST 1963},
month = {Sun Dec 01 00:00:00 EST 1963}
}