Test Method for Graphite Furnace Atomic Absorption Spectrometric Determination of Lead and Cadmium Extracted from Ceramic Foodware

2007 ◽  
Author(s):  
Keyword(s):  
Atomic Absorption ◽  
Graphite Furnace ◽  
Test Method ◽  
Lead And Cadmium ◽  
Graphite Furnace Atomic Absorption ◽  
Atomic Absorption Spectrometric

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%.

scholarly journals Graphite Furnace Atomic Absorption Spectrometric Determination of Lead and Cadmium Extracted from Ceramic Foodware: Collaborative Study

2000 ◽  
Vol 83 (5) ◽  
pp. 1174-1188 ◽  
Author(s):  
Susan C Hight ◽  
N Ayyad ◽  
B Barnes ◽  
J Brown ◽  
B DePalma ◽  
...  
Keyword(s):  
Quality Control ◽  
Standard Deviation ◽  
Atomic Absorption ◽  
Graphite Furnace ◽  
Official Method ◽  
Lead And Cadmium ◽  
Modified Method ◽  
Relative Standard ◽  
Graphite Furnace Atomic Absorption ◽  
Atomic Absorption Spectrometric

Abstract A modification of the official flame atomic absorption spectrometric (FAAS) method for determining lead and cadmium extracted from ceramic foodware was collaboratively studied. In the modified method, graphite furnace atomic absorption spectrometry (GFAAS) is substituted for FAAS. The modified method also includes mandatory quality control procedures to improve method performance. The extraction procedure of the official method (leaching with 4% acetic acid for 24 h at room temperature) remains unchanged. Seven laboratories analyzed blind duplicate portions of 3 ceramicware leach solutions containing Pb at concentrations of 0.0196, 0.403, and 3.73 μg/mL and Cd at concentrations of 0.00236, 0.0456, and 0.544 μg/mL. Performance of the modified method compared well with that of the official method. The repeatability relative standard deviation (RSDr) ranged from 0.87 to 6.7% for Pb and from 3.7 to 11% for Cd. The reproducibility relative standard deviation (RSDR) ranged from 4.5 to 12% for Pb and from 7.0 to 11% for Cd. Accuracy of collaborator results was 97–98% for Pb and 93–101% for Cd. Quality control results and quantitation limits were excellent. Method quantitation limits varied among laboratories from 0.005 to 0.019 μg/mL for Pb and from 0.0004 to 0.0019 μg/mL for Cd. The modified method was adopted First Action by AOAC INTERNATIONAL.

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