Determination of americium and curium by using ion-exchange in nitric acid-methanol medium for environmental analysis

Talanta ◽  
1976 ◽  
Vol 23 (11-12) ◽  
pp. 853-855 ◽  
Author(s):  
E Holm
Keyword(s):  
Nitric Acid ◽  
Ion Exchange ◽  
Environmental Analysis ◽  
Methanol Medium

Ion Exchange Determination of Strontium-89 and Strontium-90 in Milk: Collaborative Study

1973 ◽  
Vol 56 (1) ◽  
pp. 213-218
Author(s):  
Edmond J Baratta ◽  
F E Knowles
Keyword(s):  
Nitric Acid ◽  
Ion Exchange ◽  
High Precision ◽  
Collaborative Study ◽  
Accuracy Estimation ◽  
High Side ◽  
Strontium 90 ◽  
Precision And Accuracy

Abstract A method for the determination of strontium-89 and strontium-90 in milk, involving ion exchange and purification with nitric acid, was evaluated by 11 collaborators. The accuracy of the method for strontium-89 ranged from 2 to 56% and the within-laboratory precision ranged from 11 to 76% for a concentration range of 68–480 pCi/L; values for strontium-90 in a concentration range of 50.2–116.2 pCi/L were 6.4 to 10 and 4 to 11%, respectively. The slight bias on the high side for strontium-90 was not considered serious. The collaborators had difficulty with strontium-89 analyses, as shown by the high precision and accuracy estimation values.

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