Determination of selenium in zinc ore with high concentrations of lead and copper by the hydride generation-atomic absorption technique

1984 ◽  
Vol 317 (1) ◽  
pp. 27-28 ◽  
Author(s):  
Ragnar Bye
Keyword(s):  
Atomic Absorption ◽  
Hydride Generation ◽  
Atomic Absorption Technique ◽  
High Concentrations ◽  
Absorption Technique

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.

The Determination of Barium and Antimony in Gunshot Residue by Flameless Atomic Absorption Spectroscopy Using a Tantalum Strip Atomizer

1975 ◽  
Vol 29 (1) ◽  
pp. 44-48 ◽  
Author(s):  
J. A. Goleb ◽  
C. R. Midkiff
Keyword(s):  
Atomic Absorption ◽  
Atomic Absorption Spectroscopy ◽  
Acid Leaching ◽  
Gunshot Residue ◽  
Relative Deviation ◽  
Flameless Atomic Absorption ◽  
Flameless Atomic Absorption Spectroscopy ◽  
Atomic Absorption Technique ◽  
Absorption Technique

A flameless atomic absorption technique, employing a tantalum strip atomizer, has been developed to determine barium and antimony in gunshot residue. Cotton swabs, wetted with 5% HNO3, are used to collect residue. Barium and antimony are released from the swabs by acid leaching or plasma ashing. Both techniques give good recoveries; the ashing technique is preferred for blood-stained swabs. The sensitivity for barium is 0.1 ng/10 µl and antimony 0.2 ng/10 µl. At nanogram levels the standard relative deviation for barium is 8.3% and for antimony 8.5%.

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