ALUMINUM DETERMINATION IN SERUM BY GFAAS WITH ZEEMAN CORRECTION AND MATRIX MODIFICATION: COMPARISON OF TWO ANALYTICAL PROCEDURES

Summary Two different analytical procedures for Al determination in serum (Al-S) by Zeeman GFAAS are compared. Both procedures use the L'Vov platform, a matrix modifier based on Mg(NO 3 ) 2 or K 2 Cr 2 O 7 and the Stabilized Temperature Platform Furnace (STPF) protocol. The results obtained with the two methods are statistically comparable although use of K 2 Cr 2 O 7 affords better analytical sensitivity. The possible applications of this method in the study of Al-S reference values are evaluated in the general population.