scholarly journals Graphite-furnace atomic-absorption spectrometric determination of total selenium in complex high salt wastewaters after preoxidation and coprecipititation with tellurium.

1995 ◽  
Vol 44 (12) ◽  
pp. 1033-1039 ◽  
Author(s):  
Yasuto KASHIWAGI ◽  
Etsuo KOKUFUTA ◽  
Takuji KAWASHIMA
Keyword(s):  
Atomic Absorption ◽  
Graphite Furnace ◽  
High Salt ◽  
Graphite Furnace Atomic Absorption ◽  
Atomic Absorption Spectrometric ◽  
Total Selenium

Graphite Furnace Atomic Absorption Spectrometric Determination of Iron, Cobalt, Nickel, and Copper at Parts-Per-Billion Level in High-Purity Lanthanum Fluoride

1993 ◽  
Vol 47 (8) ◽  
pp. 1169-1170 ◽  
Author(s):  
James Jaganathan ◽  
Ishwar Aggarwal
Keyword(s):  
Atomic Absorption ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Lanthanum Fluoride ◽  
Matrix Modifier ◽  
Iron Cobalt ◽  
Cobalt Nickel ◽  
Graphite Furnace Atomic Absorption ◽  
Atomic Absorption Spectrometric

This paper describes an analytical method for the quantitation of iron, cobalt, nickel, and copper in lanthanum fluoride at trace levels with graphite furnace atomic absorption spectrometry (GFAAS) without using any matrix modifier. These metals were preconcentrated in HNO3 and analyzed directly. The detection limits for iron, cobalt, nickel, and copper were found to be 3, 1, 2, and 2 ppb, respectively. The average precision of measurements (°/o RSD) for all the elements was <10%.

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