Determination of sub-microgram amounts of selenium in geological materials by atomic-absorption spectrophotometry with electrothermal atomisation after solvent extraction

The Analyst ◽  
1981 ◽  
Vol 106 (1263) ◽  
pp. 647 ◽  
Author(s):  
R. F. Sanzolone ◽  
T. T. Chao
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