Evaluation of a Graphite Furnace Atomic Absorption Method Developed for the Determination of Lead in Sugars

1995 ◽  
Vol 43 (4) ◽  
pp. 923-927 ◽  
Author(s):  
N. J. Miller-Ihli
Keyword(s):  
Atomic Absorption ◽  
Graphite Furnace ◽  
Absorption Method ◽  
Atomic Absorption Method ◽  
Graphite Furnace Atomic Absorption

Direct Graphite Furnace–Atomic Absorption Method for Determination of Lead in Edible Oils and Fats: Summary of Collaborative Study

1994 ◽  
Vol 77 (4) ◽  
pp. 951-954 ◽  
Author(s):  
David Firestone
Keyword(s):  
Atomic Absorption ◽  
Edible Oils ◽  
Graphite Furnace ◽  
Collaborative Study ◽  
Atomic Absorption Spectrophotometry ◽  
Absorption Method ◽  
Graphite Furnace Atomic Absorption ◽  
Iupac Commission ◽  
Aoac Method

Abstract The IUPAC Commission on Oils, Fats, and Derivatives undertook development of a method and collaborative study for the determination of lead in oils and fats by direct graphite furnace–atomic absorption spectrophotometric method. Various types of graphite furnaces were used with or without platform. Twenty-three collaborators from 12 countries participated in the study. The materials tested were edible oils (soybean oil) and fats (cocoa butter) containing lead at 3 concentration levels (low, medium, and high). Each level was represented by 2 batches provided in duplicate (blind coded), so that each collaborator received a total of 24 test samples. Collaborators were instructed to analyze each in duplicate and report both results. Twenty collaborators returned the results of the study. After data from laboratories that did not follow the instructions were excluded, only 16 sets of data were evaluated statistically. The method for determination of lead in oils and fats by direct graphite furnace–atomic absorption spectrophotometry has been adopted first action by AOAC INTERNATIONAL as an IUPAC–AOCS–AOAC method.

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