Trace metal analyses in octocorals by microwave acid digestion and graphite furnace atomic-absorption spectrometry

Talanta ◽  
1992 ◽  
Vol 39 (2) ◽  
pp. 113-117 ◽  
Author(s):  
Rudolf Jaffe ◽  
Carmen A. Fernandez ◽  
Jose Alvarado
Keyword(s):  
Trace Metal ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Acid Digestion ◽  
Graphite Furnace Atomic Absorption

scholarly journals Determination of Platinum in Wine by Graphite Furnace Atomic Absorption Spectrometry

1997 ◽  
Vol 80 (1) ◽  
pp. 57-62 ◽  
Author(s):  
Carmen Cabrera-Vique ◽  
Pierra-Louis Teissedre ◽  
Marie-Thérèse Cabanis ◽  
Jean-Claude Cabanis
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Graphite Furnace ◽  
Standard Addition ◽  
Absorption Spectrometry ◽  
Acid Digestion ◽  
White Wines ◽  
Relative Standard ◽  
Graphite Furnace Atomic Absorption

Abstract A method based on graphite furnace atomic absorption spectrometry (GFAAS) was developed for determining platinum in wine. Wine samples were prepared by microwave acid digestion or dry mineralization. The method of standard addition was used for Pt determination in untreated wine samples and mineralized samples. Analyte modifiers and furnace conditions were optimized. Effects of cations (Mg2+, Ca2+, K+, Na+, and NH|) and anions (PO43, SO42) were tested separately and in combination. Analytical characteristics of the method were optimized for analyte recovery and signal enhancement. Recoveries ranged from 92.5 to 102%, and precision reproducibility relative standard deviation varied from 7.5 to 10%. Red, rosé, and white wines from France were analyzed. Platinum levels found in most wines were very low (<10 μg/L).

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