Hydride generation atomic absorption determination of selenium in marine sediments, tissues and seawater with in-situ concentration in a graphite furnace

1986 ◽  
Vol 58 (6) ◽  
pp. 1140-1143 ◽  
Author(s):  
S. N. Willie ◽  
R. E. Sturgeon ◽  
S. S. Berman
Keyword(s):  
Atomic Absorption ◽  
Marine Sediments ◽  
Graphite Furnace ◽  
Hydride Generation ◽  
Atomic Absorption Determination ◽  
Absorption Determination

Determination of Arsenic and Selenium in Whole Fish by Continuous-Flow Hydride Generation Atomic Absorption Spectrophotometry

1989 ◽  
Vol 72 (3) ◽  
pp. 484-486
Author(s):  
William G Brumbaugh ◽  
Michael J Walther
Keyword(s):  
Atomic Absorption ◽  
Continuous Flow ◽  
Hydride Generation ◽  
Atomic Absorption Spectrophotometry ◽  
Atomic Absorption Determination ◽  
Absorption Determination ◽  
Relative Standard ◽  
Wet Chemical ◽  
High Concentrations

Abstract A combined wet chemical and dry ash digestion and use of a continuous- flow hydride generator coupled with a flame-heated quartz cell enabled the simple, precise, and highly automated atomic absorption determination of arsenic and selenium in tissues of whole fish. Percent relative standard deviation averaged 4% for each element; method detection limits (μg/g dry wt) were about 0.06 for arsenic and 0.04 for selenium. Digestion of samples proceeded with little operator attention and without perchloric acid. Analysis for arsenic as As(V) simplified sample preparation but care had to be exercised to avoid interferences from high concentrations of selenium.

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