The cementation of lead from ammoniacal ammonium sulphate solution

1998 ◽  
Vol 47 (2-3) ◽  
pp. 273-279 ◽  
Author(s):  
Lorne D. Schwartz ◽  
Thomas H. Etsell
Keyword(s):  
Ammonium Sulphate ◽  
Sulphate Solution ◽  
Ammonium Sulphate Solution

scholarly journals A Simple and Economical Method for the Radioimmunoassay of Cortisol in Serum

1978 ◽  
Vol 15 (1-6) ◽  
pp. 178-183 ◽  
Author(s):  
R. Morris
Keyword(s):  
Ammonium Sulphate ◽  
Liquid Scintillation ◽  
Sulphate Solution ◽  
Economical Method ◽  
Normal Ranges ◽  
Ammonium Sulphate Solution ◽  
Scintillation Fluid ◽  
Scintillation Vial

Summary A simple, economical method is described for the radioimmunoassay of cortisol in serum. Extraction is avoided by heating the diluted serum to inactivate cortisol-binding globulin. The radioimmunoassay is carried out in a single disposable scintillation vial without centrifugation. Free and bound steroid is separated by partition between ammonium sulphate solution and liquid scintillation fluid. Accuracy, precision and sensitivity are satisfactory. Normal ranges obtained are comparable to those obtained by other radioimmunoassay methods for cortisol.

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